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Visualizzazione dei post in ordine di data per la query brain. Ordina per pertinenza Mostra tutti i post
Visualizzazione dei post in ordine di data per la query brain. Ordina per pertinenza Mostra tutti i post

lunedì 25 marzo 2024

# brain: the hypothesis of the genetic link between present moment attention and subjective wellbeing.

<< Considerable evidence supports the role of present-moment attention, a central feature of mindfulness, in subjective wellbeing maintenance and enhancement. >>️

<< Consistent with the “generalist genes hypothesis” and prior evidence, (AA) hypothesized that presence and subjective wellbeing would show a substantial genetic correlation and smaller environmental correlation. >>️

<< This study provides the first evidence known to us showing that present-centered attention, a primary component of mindfulness, has both genetic and environmental overlap with subjective wellbeing. >>️

Kirk Warren Brown, Fazil Aliev, et al. A multivariate twin study of the genetic association between present moment attention and subjective wellbeing. Sci Rep 13, 17456 (2023). doi: 10.1038/ s41598-023-42810-x.

Also: brain, Zen, in https://www.inkgmr.net/kwrds.html 

Keywords: present moment attention, mindfulness, subjective wellbeing, generalist genes hypothesis. 

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giovedì 21 marzo 2024

# brain: apropos of wars ... VR plus tDCS to reduce symptoms of posttraumatic stress disorder (PTSD) (in military veterans).

<< Key Points. Question. Can therapeutic exposure using virtual reality (VR) be augmented with simultaneously applied transcranial direct current stimulation (tDCS) to reduce symptoms of posttraumatic stress disorder (PTSD)? >>

<< Meaning. These findings suggest that the use of combined VR exposure plus tDCS could be a promising treatment for warzone-related PTSD. >>️️

Mascha van’t Wout-Frank, Amanda R. Arulpragasam, et al. Virtual Reality and Transcranial Direct Current Stimulation for Posttraumatic Stress Disorder. A Randomized Clinical Trial. JAMA Psychiatry. doi: 10.1001/jamapsychiatry.2023.5661. Mar 6, 2024.


Keywords: life, war, brain, VR, tDCS, PTSD, veterans


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mercoledì 13 marzo 2024

# brain: apropos of mandering minds, the 'default mode' network.

<< When your mind is wandering, your brain’s “default mode” network is active. Its discovery 20 years ago inspired a raft of research into networks of brain regions and how they interact with each other. >>

<< The default mode was one of the first brain networks characterized by science. It consists of a handful of brain regions, including a few at the front of the brain, like the dorsal and ventral medial prefrontal cortices, and others scattered throughout the organ, like the posterior cingulate cortex, the precuneus and the angular gyrus. These regions are associated with memory, experience replay, prediction, action consideration, reward/ punishment and information integration. >> ️

<< The default mode is clearly up to something complicated; it’s involved in many different processes that can’t be neatly described. >>

<< “It’s kind of silly to think that we’re ever going to be like, ‘This one brain region or one brain network does one thing,’” (..). “I don’t think that’s how it works.” (..) “Network interactions are more elucidating to study in some ways than just a network in isolation because they do work together and then come apart and then change what they’re doing over time”. >> Lucina Uddin.️

Lucina Uddin << is particularly interested in how the default mode network interacts with the ️salience network, which seems to help us identify the most relevant piece of information at any given time. Her work suggests that the salience network detects when something is important to pay attention to and then acts as an off switch for the default mode network. >>

Vinod Menon << has developed what he calls️ ️the triple network theory. It posits that abnormal interactions between the default mode network, the salience network and a third one called the frontoparietal network could contribute to mental health disorders. >>️

Nora Bradford. What Your Brain Is Doing When You’re Not Doing Anything.  quantamagazine.org. Feb 5, 2024. 

FonT: the cat when it is in a contemplative state ... Who knows in what forms and with what results an artificial intelligence (AI) will be able to structure itself in networks of this type.

Also: brain, brain default mode network, in  https://pubmed.ncbi.nlm.nih.gov/?term=brain+default+mode+network



Also: brain, ai (artificial intell), analogy,  in https://www.inkgmr.net/kwrds.html

Keywords: brain, mind, default mode network, salience network, triple network theory, AI


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martedì 13 febbraio 2024

# brain: arterial pressure pulsations could modulate neuronal activity.

<< Spontaneous slow oscillations have been described in the rat olfactory bulb local field potential, even in the absence of respiration. What is the origin of these oscillations? >>

AA << discovered a subpopulation of neurons within the olfactory bulb that can directly sense cardiovascular pressure pulsations (..). The modulation of their excitability is transduced by mechanosensitive ion channels. >>

<< Thus, there exists a fast pathway for the interoception of heartbeat whereby arterial pressure pulsations within the brain modulate neuronal activity. >> Peter Stern. ️

Luna Jammal Salameh, Sebastian H. Bitzenhofer, et al. Blood pressure pulsations modulate central neuronal activity via mechanosensitive ion channels. Science. Vol 383, Issue 6682. Feb 2, 2024. 


Also: brain, pnei, soliton, in https://www.inkgmr.net/kwrds.html  

Keywords: brain, pnei, olfactory bulb, spontaneous slow oscillations, wave, soliton


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giovedì 18 gennaio 2024

# gst: pseudo epileptic seizures in self-organized bistability

<< Self-organized bistability (SOB) stands as a critical behavior for the systems delicately adjusting themselves to the brink of bistability, characterized by a first-order transition. >>️

(AA) << embark on a theoretical exploration that extends the boundaries of the SOB concept on a higher-order network (implicitly embedded microscopically within a simplicial complex) while considering the limitations imposed by coupling constraints. >>️

AA << use continuous synchronization diagrams and statistical data from spontaneous synchronized events to demonstrate the crucial role SOB plays in initiating and terminating temporary synchronized events. (They) show that under weak coupling consumption, these spontaneous occurrences closely resemble the statistical traits of the epileptic brain functioning. >>
️
Md Sayeed Anwar, Nikita Frolov, Alexander E. Hramov, Dibakar Ghosh. Self-organized bistability on globally coupled higher-order networks. arXiv: 2401.02825v1 [nlin.AO]. Jan 5, 2024.

Also: transition, self-assembly, brain, in: https://www.inkgmr.net/kwrds.html

Keywords: gst, transition, self-assembly, bistability, self-organized bistability, brain, epileptic seizure

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giovedì 7 dicembre 2023

# art: nature as a bizarre artist, the self-sculpted Sphinx.


<< There is evidence that the Great Sphinx was a natural landform before its surface features were chiseled by the ancient Egyptians. Is this controversial theory plausible? >>

AA << carried out experiments on the fluid mechanical erosion of clay. Based on accounts of the nonuniform composition of the Sphinx, we tested the effect of hard inclusions within hillocks of softer clay. The flow of a water tunnel mimics the prevailing winds of Giza, and three-dimensional optical scanning records the history and evolution of the shape as it erodes. >>

<< These results show what ancient peoples may have encountered in the deserts of Egypt and why they envisioned a fantastic creature. >>️
️
Samuel Boury, Scott Weady, Leif Ristroph. Sculpting the Sphinx. Phys. Rev. Fluids 8, 110503. Nov 16, 2023.


Also: brain, perception, in https://www.inkgmr.net/kwrds.html 

Keywords: art, sculpt, Sphinx, erosion, fluid mechanical erosion, brain, mind, perceptions.




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sabato 15 luglio 2023

# brain: the sense of hearing, the sense of silence.


<< Do we only hear sounds? Or can we also hear silence? These questions are the subject of a centuries-old philosophical debate between two camps: the perceptual view (we literally hear silence), and the cognitive view (we only judge or infer silence). >>

<< In all cases (concerning seven experiments), silences elicited temporal distortions perfectly analogous to their sound-based counterparts, suggesting that auditory processing treats moments of silence the way it treats sounds. Silence is truly perceived, not merely inferred. >>️
️
Rui Zhe Goh, Ian B. Phillips, Chaz Firestone. The perception of silence. 
PNAS. 120 (29) e2301463120. Jul 10, 2023. 

Roberto Molar Candanosa. The sound of silence? Researchers prove we can  hear it. Johns Hopkins University - HUB. Jul 11, 2023. 

Researchers Prove We Hear the 
Sound of Silence. Jul 10, 2023. 

Also: silence, pause, sound, noise, perception, brain, in https://www.inkgmr.net/kwrds.html 

Keywords:  brain, perception, sound, noise, pause, silence


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mercoledì 5 luglio 2023

# brain: spiral waves at the edge of neural tissue during cognitive processing.


AA << have discovered human brain signals travelling across the outer layer of neural tissue that naturally arrange themselves to resemble swirling spirals. >>️

<< The research (..) indicates these ubiquitous spirals, which are brain signals observed on the cortex during both resting and cognitive states, help organise brain activity and cognitive processing. >>️

<< Our study suggests that gaining insights into how the spirals are related to cognitive processing could significantly enhance our understanding of the dynamics and functions of the brain, (..) These spiral patterns exhibit intricate and complex dynamics, moving across the brain’s surface while rotating around central points known as phase singularities. >> Pulin Gong.

<< One key characteristic of these brain spirals is that they often emerge at the boundaries that separate different functional networks in the brain, >> Yiben Xu. 

Philip Ritchie. Scientists discover spiral-shaped signals that organise brain activity. sydney.edu.au. Jun 16, 2023. 


Yiben Xu, Xian Long, Jianfeng Feng & Pulin Gong. Interacting spiral wave patterns underlie complex brain dynamics and are related to cognitive processing. Nat Hum Behav. doi: 10.1038/ s41562-023-01626-5. Jun 15,  2023.

Also: brain, vortex, waves in: https://www.inkgmr.net/kwrds.html

Keywords: brain, vortex, waves,  cognition




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venerdì 10 febbraio 2023

# gst: apropos of transitions, a perpetual dance between states of meta-stability and chaos (in brain).


<< Hello! Today: new research is shining a light on how our brains flit between states of stability and chaos, depending on what we’re doing. >>

<< Our brains exist in a state somewhere between stability and chaos as they help us make sense of the world, according to recordings of brain activity taken from volunteers over the course of a week. >>

<< As we go from reading a book to chatting with a friend, for example, our brains shift from one semi-stable state to another—but only after chaotically zipping through multiple other states in a pattern that looks completely random. >>

<< Understanding how our brains restore some degree of stability after chaos could help us work out how to treat disorders at either end of this spectrum. Too much chaos is probably what happens when a person has a seizure, whereas too much stability might leave a person comatose. >>

Jessica Hamzelou. Neuroscientists listened in on people’s brains for a week. They found order and chaos. Rhiannon Williams. MIT Download. Feb 8, 2023.


<< The team (Avniel Ghuman, Maxwell Wang, et al.) found some surprising patterns in brain activity over the course of the week. Specific brain networks seemed to communicate with each other in what looked like a “dance,” with one region appearing to “listen” while the other “spoke,” say the researchers, who presented their findings at the Society for Neuroscience annual meeting in San Diego last year. >>

Jessica Hamzelou. MIT Tech Rev. Feb 7, 2023. 

Also 

keyword 'danza' in Notes
(quasi-stochastic poetry)

keyword 'dance' in FonT

keyword 'cervello' | 'brain' in Notes
(quasi-stochastic poetry)


keyword 'brain' in FonT

keyword 'chaos' | 'chaotic' in Font


keyword 'caos' | 'caotico' in Notes (quasi-stochastic poetry)


<< Amico, qualunque  cosa suonerai . . . >>  Jelly Roll Morton. cit.: 2113 - soniche a ramulo. Jan 28, 2007


Keywords: gst, brain, transition, chaos, dance



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martedì 10 gennaio 2023

# brain: how the brain says 'Oops!'

AA << have uncovered how signals from a group of neurons in the brain's frontal lobe simultaneously give humans the flexibility to learn new tasks—and the focus to develop highly specific skills. >>

<< The study's key finding is that the brain uses the same group of neurons for performance feedback in many different situations—whether a person is attempting a new task for the first time or working to perfect a specific skill. >>

<< Part of the magic of the human brain is that it is so flexible, (..) We designed our study to decipher how the brain can generalize and specialize at the same time, both of which are critical for helping us pursue a goal. >> Ueli Rutishauser. ️

️
New Study Reveals How the Brain Says 'Oops!'. Cedars-Sinai Medical Center. May 5, 2022. 

AA << recorded the activity of more than 1000 neurons in the medial frontal cortex of human epilepsy patients while they performed complex cognitive tasks. They found that domain-general and domain-specific performance monitoring neurons were intermixed within this brain region. The population activity gave rise to a geometry that allowed domain-general signals to be read out with more than 90% accuracy on single trials while at the same time retaining the ability to separate different conflict conditions. These results show how the human medial frontal cortex resolves the fundamental trade-off between task generalization and specialization, which is critical for cognitive flexibility. >>
️
Zhongzheng Fu, Danielle Beam, et al. The geometry of domain-general performance monitoring in the human medial frontal cortex. Science. Vol 376, Issue 6593. doi: 10.1126/ science.abm9922. May 6, 2022.

Also

keyword 'cervello' | 'brain' in Notes
(quasi-stochastic poetry)



keyword 'brain' in FonT


keyword 'organoids' in FonT


PS: An image of "oops", not completely spanned in the air, could be this:


Keywords: brain, mind, cervello, mente, oops






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Etichette: , , , ,

lunedì 17 ottobre 2022

# life: a proposito di bizzarri scenari, qui un ipotetico scenario22 dipinto dal reale ...

img: Congo Square, New Orleans, Louisiana (wikipedia.org)

In definitiva qui si configurerebbe un - intrigante assai - scenario che, grosso modo, si potrebbe sinteticamente 'dipingere' in questi termini: 

(i) entità tre palle destrogire, animate aciclicamente da interazioni attrattive- repulsive a causa di già a suo tempo disvelate pulsioni neuro cognitive arcaiche, riconducibili a visioni neuro predatorie CTZ estreme, perciò ipoteticamente (si fa per dire) a-priori ad esiti immediati e in prospettiva drammaticamente lesivi- autolesivi; 

(ii) entità tre palle levogire, animate da analoghe pulsività, purtuttavia in.forme  tenui, in modalità sottotraccia, frenate da feed-back a modalità allosterica, ombreggiate, stemperate, diluite, discrete, timidamente celate, talvolta fantasmatiche perfino, quasi ma non del tutto mai silenti, perciò anch'esse a tutti gli effetti operative, sebbene a dinamiche più fluide, lente, meno dirompenti rispetto alle destrogire; 

(iii) entrambe l'Entità destrogire e levogire animat(t)rici,  generat(t)rici di dinamiche bi-multi-forcate, transeunti, con picchi di improvvisi aciclici burst ad effetti RAG-time diretti e inversi;

(iv) lo scenario al contorno e forse anche all'interno, nei vari specifici contesti, riconducibile grosso modo alla formazione aciclica di ipotetici buchi neri non inerti, caratterizzati da aciclicità in compressione e dilatazione - come fossero fisarmoniche - animati (in perpetuo?) da multi vortici in ingresso e in uscita;

Non so se basti compulsare un manuale delle funzioni speciali per formalizzare in qualche adatto topo-modo questo pulsatile multi scenario, purtuttavia assolutamente intrigante ... 

Qui una AI operativa nella formalizzazione di analogie potrebbe modellizzare, forse ... (e.g. https://flashontrack.blogspot.com/2021/08/aibot-mechanism-of-analogy-could-be.html )

Quello che appare evidente è la complessità d'insieme, un bizzarro dipinto, uno scenario dinamico che, al confronto, le storiche danze in Congo Square potrebbero sembrare semplici, ordinate coreografie ... queste, rispetto a quelle, delle topo-forme  'primitive', per dire ed anzicheforse.

In sintesi, i riferimenti (ovviamente generici) del bizzarro scenario: 

(:) buco nero con vortici 

(:) scenari generati da 3 palle 
(a)
(b)

(:) effetti RAG-time (RAG: Ralph, Al, George) 
(a) (quasi-stochastic poetry)
(b)

(:) pulsioni predatorie supportate / giustificate da visioni neuro- post- CTZ nelle modalità arcaiche oppure friendly 

(:) Congo Square, jazz 
(a)
(b)
(c) (quasi-stochastic poetry)

(:) approccio Bertalanffy 

(:) un bizzarro tracciatore 

Anche

"Amico, qualunque cosa suonerai ... "
(a) (quasi-stochastic poetry)
(b)

Keywords: life, gst, Congo Square, jazz, Jelly Roll, transition, three-body, RAG, CTZ, black hole, bizarre tracker




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venerdì 7 ottobre 2022

# life: a proposito di transizioni, un generico approccio di come tracciare traiettorie di ipotetiche Entità in ipotetica modalità transeunte

Img: Fear and loathing in Las Vegas.  Terry Gilliam (Movie, USA, 1998). 

A proposito di transizioni, qui una breve lista di generiche purtuttavia significative tracce da individuare, circoscrivere, analizzare, collezionare, tracce che permettono, a-priori, di intravedere "finestre di non così im.probabile futuro transeunte" in contesti anche di elevata, spiccata, pulsatile complessità (per modo di dire).

Si immagini (l'immaginazione è sempre utile, necessaria, indispensabile, è sempre così) un gambler curioso, tenace (anche sadico seppure più o meno in.consapevole), purtuttavia irreversibilmente incline ai "giochi al buio" (il gambling al buio è Alfa e Omega per il gambler ispirato, creativo, erratico, di frontiera ...) che irrompa per qualsivoglia motivo (per caso, per necessità, per curiosità, per pulsione sperimentale ...) "nei meandri labirintici d'obscure & 'fonde paludi" 
https://inkpi.blogspot.com/2005/06/1668-ramificata-tinnula-di-carmina.html  e ponga - individualmente, serialmente - mai collettivamente, mai pubblicamente  (qui si evidenzia: MAI)  - una banale generica domanda, purtuttavia non del tutto campata in aria, a interlocutori sia in ambienti "di strada", "di bar", "di famiglia", "di club", "di clan", sia in ambiti "di potere", anche di "alto rango", anche professionalmente "paludati", diciamo ...

Da.Lì un complesso d'immediate  risposte che permetteranno  all'osservatore gambler di collezionare "tracce" utili per delineare, assemblare panoramiche, non del tutto campate in aria, su come potrebbe ipoteticamente indirizzarsi, strutturarsi, configurarsi, delinearsi il sistema negli anni - ma anche nei decenni - a venire; 

A scanso di equivoci, questo non è approccio da "Apprendista Stregone"; tutt'altro; qui si ricorda che "l'osservazione" e "l'interrogazione" (i.e. "l'esperimento", perciò con l'indispensabile metodologico confinamento dell'errore) diretti verso  qualsivoglia "scatola nera" di qualsivoglia natura sono i primi due momenti dell'impresa scientifico/ tecnologica. Di qualsivoglia impresa scientifico/ tecnologica; si pensi come esempio all'enorme complesso di interrogazioni della Fisica, della Chimica, che hanno permesso la tecnologia tascabile "ditino-telefonino".

Qui la domanda: 

"questo senz'altro intrigante dinamico 'movimento' (all'interno di un ben circoscritto specifico contesto) non Le sembra generato da un gioco in qualche forma deviato, a logica forse arcaica, fors'anche involuta, ipoteticamente a-priori autolesiva financo, risonante, ridondante di tipico sotteso generico controllo di potere mafioso (pre- post- para- etno- ...)... ?"

Qui di seguito una serie di risposte significative (i traccianti) da collezionare con ordine e dedizione (come le mitiche figurine Panini anni '60, per dire - ce l' ho, ce l'ho, mi manca ...  https://www.panini.it/shp_ita_it/figurine-panini.html ) e, successivamente, da modellizzare nell'adatte forme.

Si pensi, se si vuole, a una bizzarra ipotesi di "volontariato" indirizzato verso la figura di ipotetico giovane Scienziato Antropologo Cittadino (gSAC) di talento.

Una osservazione: nel corso dell'interazioni, qualsiasi successivo commento/ variazione di atteggiamento, di facies alle risposte dell'interlocutore sono da evitare assolutamente; nel porre la domanda e nel registrare le risposte l'esercizio dell'ascolto, del successivo silenzio, dell'impassibilità qui sono  metodologicamente obbligatori; qui è fondamentale l'esclusione di qualsivoglia esternazione in merito a  pulsività moralistico- ideologiche. Si perturberebbe oltremodo ed irreversibilmente il 'sistema' in osservazione compromettendo il valore dell'intervista.

Unica eccezione, al solo scopo di agevolare, facilitare, rendere fluida l'interazione, si legga ad es. "A gentle lick or nibble makes this brain circuit buzz", D. Keller et al./Curr. Biol.   https://www.nature.com/articles/d41586-022-02910-6

Se possono essere utili altri riferimenti bibliografici ci si può riferire alle operazioni "emiche-etiche" (Marvin Harris https://en.m.wikipedia.org/wiki/Marvin_Harris) e alle facies impassibili - qualsiasi cosa accada - del Maestro, indimenticato, indimenticabile Buster Keaton https://it.m.wikipedia.org/wiki/Buster_Keaton ).

Ultima osservazione: trattandosi di giornalismo scientifico, sarebbe bene evitare quelle disdicevoli performance che declinano verso le bizzarrie comportamentali di Raoul Duke e Dr. Gonzo in "Fear and Loathing in Las Vegas" https://en.m.wikipedia.org/wiki/Fear_and_Loathing_in_Las_Vegas

Qui le risposte "traccianti":

(1) << si e' sempre fatto così >>
(2a) << anche gli altri >>
(2b) << Lei non ha idea - in tal guisa - a quali importanti Clan si potrebbe  accedere ed operare (beninteso, se fosse come dice Lei) >>
(3) << in qualsiasi "altro modo" sarà piu' difficile, mi creda >>
(4) << qui ognuno si occupa del "proprio"/ dei "propri" >>
(5) << questa è forse una velata  contestazione? Lei suggerisce forse che qui si possa reagire/ contestare/ deviare/ tradire, e perciò sputare nel piatto dove si mangia/ si è mangiato/ si mangerà/ si mangerebbe? >>
(6) << se si fa "altro" allora ... non si è  furbi >>
(7) << se si fa "altro" allora ... non si è "con Noi" e se non si è "con Noi" allora si è "contro di Noi", e' scritto in tutti i libri che si trovano in tutte le biblioteche >> 
(8) << "Noi" non si sapeva >>
(9a) << "Noi" siamo/ siamo stati colti di sorpresa >> 
(9b) << "Noi" siamo stupiti, allibiti, estre.fatti >> 
(10) << evidentemente "Noi" si è stati dis.tratti >>️
(11) << attenzione, a gettare fango "su di Noi" si getterà fango su tutto il sistema/ istituzione/ (...) >>
(12) << attenzione, in realtà questo non e'/ non può essere un contesto democratico >> 
️
Per chiudere col guizzo d'orpello la breve ma esaustiva lista, qui di seguito tre dei classici della letteratura in tali ambiti: 

(13a) << qui è difficile entrare ma, una volta entrati, da qui è impossibile uscire  (intendendo sottotraccia: pena l'essere  copiati/ duplicati - si tenga presente che sono illusori, ad esiti comici, drammatici, i tentativi di copiare- duplicare una Entità se l'Entità è, per certe sue caratteristiche proprie, per sua intima natura, induplicabile -  poi sostituiti, infine irreversibilmente confinati/ terminati) >>
(13b) << ci sono contesti dove non si può vincere, non si può perdere, non si può lasciare >>️
(14) << da questa domanda mi sembra di capire cosa Lei pensa di "Noi" (pausa)  - qui è indispensabile l'impassibilità e l'assoluto silenzio dell'intervistatore - Lei pensa che Noi si è imbecilli, perditempo, dediti a pulsioni lesive- autolesive,  ... se è così, se è come Io penso ciò che Lei pensa, si acconci perchè non si sappia in giro, perchè non si venga a sapere (cosa  pensa di Noi), altrimenti Lei, Dottore, qui e altrove, è finito, fi-ni-to ... (by Gigi, 1985) >>️️
(15) << se sono rose fioriranno ... >>
️
PS: ognuna di queste risposte meriterebbe una Nota poetica, quasistocastica perfino ( https://inkpi.blogspot.com ), ad es. 

<< ... che sgomina (sgomitola?) il qualsivoglia tema // segnato //
da selle in mista gomena // all'interno,  all'intorno // dell'inteso (intonso?) meta-magma // neuro- meta- magma >>

ma mi astengo. 

Anche

<< signorivirgolaattenzionevirgolaquicrollatutto ... >> Anonymous(1), autunno 1981.

<< il ragazzo è un bravo ragazzo, forse un po' strano, ha studiato molto, ha lavorato molto, farà certamente brillante carriera, ora habisognodellaMica >>️ Anonymous(2), autunno 1981.️

Anche

<< I never pay any attention to anything by “experts.”  I calculate everything myself. >> 16:01 Jun 9, 2022. 

<< You can have a PhD and still be an idiot! Education and intelligence are two different things. 🧠  >> 17:24  May 31, 2022.  https://twitter.com/ProfFeynman/status/1531657982525571072

<<
• If you're wrong, admit it.
• If you're confused, ask questions.
• If you're stuck, seek for help.
• If you make mistake, learn from it.
• If you learn something, teach others >>  17:00 Sep 25, 2022.  https://twitter.com/ProfFeynman/status/1570427455311347712

Anche

keyword 'carmina' in Notes
(quasi-stochastic poetry)


keyword 'ctz' in FonT


keyword 'delirio' in Notes
(quasi-stochastic poetry)


keyword 'intervista' in Notes
(quasi-stochastic poetry)


Keywords: life, intervista, carmina, delirio






Pubblicato da alle Nessun commento:
Etichette: , , ,

giovedì 8 settembre 2022

# behav: cry / not cry, babe ... POMC neurons modulate the crying behavior of pups (among mice)


<< Infants cry when separated from their mothers. Here, (AA) show that POMC (pro-opiomelanocortin) neurons in the arcuate nucleus of the hypothalamus—via ß-endorphin production and signaling—modulate the crying behavior of mouse pups. The effect of POMC neurons on vocal behavior depends on the expression of µ-opioid receptors, the main receptor for ß-endorphin. Thus, POMC neurons in the hypothalamus modulate infant cry through opioid signaling. >>️

Gabriela M. Bosque Ortiz, Marcelo O. Dietrich. POMC neurons modulate infant vocalizations through opioid signaling. bioRxiv 2022.08.15.504046. 
doi: 10.1101/ 2022.08.15.504046. Aug 15, 2022. 

Also

keywords 'behav' in FonT

keyword 'pnei' in FonT

keyword 'pnei' in Notes 
(quasi-stochastic poetry)

Keywords: behav, brain, pnei, opioid signaling


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martedì 5 luglio 2022

# behav: cognitive maps to get out of trouble, a jumping behaviour could be a goal-directed behaviour (in guppies, Poecilia reticulata).

<< Spatial cognitive abilities allow individuals to remember the location of food patches, predator hide-outs, or shelters. Animals typically incorporate learnt spatial information or use external environmental cues to navigate their surroundings. A spectacular example of how some fishes move is through aerial jumping. >>️

<< what information such re-orientation behaviour during jumping is based on remains enigmatic. Here (AA) combine a lab and field experiment to test if guppies (Poecilia reticulata) incorporate learnt spatial information and external environmental cues (visual and auditory) to determine where to jump. >>

AA << show that in unfamiliar entrapments guppies direct their jumps by combining visual and auditory cues, while in familiar entrapments they use a cognitive map. (..) jumping behaviour is a goal-directed behaviour, guided by different sources of information and involving important spatial cognitive skills. >>️️

Hannah de Waele, Catarina Vila Pouca, et al. Jumping out of trouble: Evidence for a cognitive map in guppies (Poecilia reticulata).  bioRxiv. doi: 10.1101/ 2022.03.30.486400. Mar 30, 2022.


Also

Voli a casaccio. Notes (quasi-stochastic poetry). Oct 01, 2006. 


the flexible mental maps of flies. FonT. Nov 21, 2019. 


Keyword: behav, cognition, jumping behaviour, aerial jumping






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mercoledì 29 giugno 2022

# life: sull'improvviso risveglio da sonni fanciulli ...

Risvegliati improvvisamente, bruscamente, irreversibilmente da sonni fanciulli, fantasmatici, campati in aria, dal petroliere guerriero Mr Vlad ( Vladimir Vladimirovic Putin   https://it.m.wikipedia.org/wiki/Vladimir_Putin ) ecco qui qualche assolutamente ipotetica macro conseguenza (a,b,c) a cascata per l'Europa (Italia inclusa) che accompagnerebbe l'Europa graziosamente fino al prossimo secolo,  e forse anche oltre; forse chissà quante decine se non centinaia di generazioni potrebbero esserne loro malgrado coinvolte.

(a) 
Un ruolo di possibile mediatore della Russia tra Occidente e Oriente, tra Europa e Cina si è evaporato, dissolto, dopo le in.credibili  performance del guerriero dalle latte rugginose Mr Vlad, fautore di approccio eugenetico arcaico.

In sintesi:  Ti accucci meco? Vivrai (i.e. sopravviverai, forse). Non ti accucci? Sarai svuotato, duplicato, cancellato, terminato, fisicamente terminato; Te medesimo, la Famiglia, l'eventuali tuoi Amici, Compari di merenda e Ospiti di casa (gatto, cane, canarini in gabbietta, senza escludere i topi del solaio e della cantina). E' solo questione di tempo ... 

Qui la strategia di Mr Vlad sembra superare quella più sociale, benevola, compassionevole (se così si può dire) dell'altrettanto arcaico approccio metodologico Abanese diretto verso il colpevole di indicibile SAC Sgarro-Al-Clan (Codice Kanun o Kanuni, detto anche Canone di Leke Dukagjini, graziosamente riprodotto in qualche sua parte anche altrove, perfino in contesti insospettabili).

In sintesi:  hai sgarrato il Codice perciò sei colpevole; stai confinato tra le mura domestiche e vivrai; esci e verrai immediatamente terminato. Solo in qualche particolare caso potrai uscire e sopravvivere se e solo se accompagnato dalla femmina.

(b) 
Indipendentemente dalla afferenza alla NATO, all'ONU, etc, alle politiche di governo locale, gli Stati dell'Europa (Russia compresa), per la propria sopravvivenza giornaliera, pagheranno  Royalties a Cina per l'uso di qualsivoglia tech. Per capirsi: sarà indispensabile pagare Royalties alla Cina anche per servirsi di hitech-WC pei giornalieri fisiologici indispensabili pissiolamenti. 

A margine: si potrebbe ipotizzare la diffusione, timida e via via sempre più veloce, a progressione autocatalitica, di immagini di Mr Richard Nixon ( Potus  1969-1974 ) ( https://it.m.wikipedia.org/wiki/Richard_Nixon ) ( https://it.m.wikipedia.org/wiki/Comunicato_di_Shanghai ) che potrebbe essere indicato dal Gov Cinese come "Nixon, vero autentico indimenticabile amico occidentale della nazione" 

(c) 
Chi saranno gli esattori? I Cinesi no, non penso proprio; probabilmente l'incarico di riscuotere le giornaliere ricche Royalties verrà conferito dalla Cina a Stati e Popoli dell'Africa sub-Sahariana.  Questo approccio esprimerebbe componenti legali difficilmente contestabili e se ben giocato rifletterebbe perfino componenti etiche, di giustizia sociale.

Ovviamente (a,b,c) è un sunto di  ipotetico vaticinio, perciò assolutamente generico, soggettivo, allo stato indimostrabile.  

Codice Kanun. Vers. 14 Set 2021 14:30
by Andrys8. 


Eugenetica 


Anche

keyword 'naked' in FonT
(qui una incredibile convergenza)


Anche

Immagini #CTZ, cicliche fantasmatiche pervasive visioni ricorrenti. FonT. Jun 29,  2019.


JARexit: the ironic probabilistic upshot of the itinerant, escaping IR77, Promobot. FonT. Jun 25, 2016.




PS: l'immagine senz'altro suggestiva "Risvegliati improvvisamente, bruscamente, irreversibilmente da sonni fanciulli, fantasmatici, campati in aria," meriterebbe una Nota poetica, quasistocastica perfino ( https://inkpi.blogspot.com ), ma mi astengo. 

Keywords: life, War, Vladimir Putin, Russia, Ucraina, Ukraine, Cina, China, Europa, Europe, vaticinio, forecast


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sabato 4 giugno 2022

# pnei: brain motor and fear circuits regulate leukocytes during acute stress


<< The nervous and immune systems are intricately linked. Although psychological stress is known to modulate immune function, mechanistic pathways linking stress networks in the brain to peripheral leukocytes remain poorly understood. Here, (AA) show that distinct brain regions shape leukocyte distribution and function throughout the body during acute stress in mice. >>️

Poller, W.C., Downey, J., et al. Brain motor and fear circuits regulate leukocytes during acute stress. Nature. doi: 10.1038/ s41586-022-04890-z. May 30, 2022. 


PNEI: Psycho-Neuro-Endocrine-Immunology  


Also

Inchingolo G. Percezione dello stato di salute e leucociti in anziani ultraottantenni.   Atti 36 Congresso Nazionale Società Italiana di Gerontologia e Geriatria, Palermo, 7-10 Novembre 1991.   Giornale di Gerontologia 1991; XXXIX(11): 753.


keyword 'pnei' | in FonT


keyword 'pnei' | in Notes 
 (quasi-stochastic poetry)


Keywords: pnei, neuroimmunology, leukocytes, fear, stress, virus, viral infection, adaptation, adaptive immunity 






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mercoledì 18 maggio 2022

# brain: jazzy perceptions inside, there’s more to all the noise; even in the dark, neurons of the visual cortex chat

<< Scientists are now rethinking how they study and conceive of perception. >>

<< At every moment, neurons whisper, shout, sputter and sing, filling the brain with a dizzying cacophony of voices. Yet many of those voices don’t seem to be saying anything meaningful at all. They register as habitual echoes of noise, not signal; as static, not discourse. >>️

<< But over the past decade, that view has changed. (..) There’s more to all the noise, scientists realized, than they had assumed. >>️

<< Now, by analyzing both the neural activity and the behavior of mice in unprecedented detail, researchers have revealed a surprising explanation for much of that variability: Throughout the brain, even in low-level sensory areas like the visual cortex, neurons encode information about far more than their immediately relevant task. They also babble about whatever other behaviors the animal happens to be engaging in, even trivial ones — the twitch of a whisker, the flick of a hind leg. Those simple gestures aren’t just present in the neural activity. They dominate it. >>️

<< Our brains aren’t just thinking in our heads. Our brains are interacting with our bodies and the way that we move through the world. >> Cris Niell. 

<< Wait — maybe the brain isn’t noisy. Maybe it’s actually much more precise than we thought, >> David McCormick️.️

Jordana Cepelewicz. ‘Noise’ in the Brain Encodes Surprisingly Important Signals. Quantamag. Nov 7, 2019. 


Salkoff DB, Zagha E, McCarthy E, McCormick DA. Movement and Performance Explain Widespread Cortical Activity in a Visual Detection Task. Cereb Cortex. 2020 Jan 10;30(1):421-437. doi: 10.1093/ cercor/bhz206. 


Also

keyword 'perception' in FonT


keyword 'percezione' | 'percezioni' in Notes (quasi-stochastic poetry)



keyword 'error' | 'fuzzy' | 'noise'  in FonT 




keywords 'errore' | 'errori' in Notes (quasi-stochastic poetry)



keyword 'jazz' in FonT


keyword 'jazz' in Notes (quasi-stochastic poetry):


Keywords: brain, perception, visual cortex, noise









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martedì 10 maggio 2022

# brain: waiting for 'magic strings', psilocybin is a 'relatively safe' drug.

<< Psilocybin-containing mushrooms are used for recreational, spiritual, self-development and therapeutic purposes. However, physiologically relatively nontoxic, adverse reactions are occasionally reported. >>

The << study investigated the 12-month prevalence and nature of magic mushroom-related adverse reactions resulting in emergency medical treatment seeking in a global sample of (9.233) people reporting magic mushroom use. >>️
️
️ << The results confirm psilocybin mushrooms are a relatively safe drug, with serious incidents rare and short lasting. Providing harm-reduction information likely plays a key role in preventing adverse effects. More research is needed to examine the detailed circumstances and predictors of adverse reactions including rarer physiological reactions. >>️

Emma I Kopra, Jason A Ferris, et al. Adverse experiences resulting in emergency medical treatment seeking following the use of magic mushrooms. Journal of Psychopharmacology. 1-9. doi: 10.1177/ 02698811221084063. 
Apr 7, 2022.


<< Psilocybin is currently being investigated in clinical trials for mental health conditions across the world, including in our department, (..) It is important to draw a distinction between the use of psilocybin in clinical or research settings and recreational magic mushroom use, with partly overlapping yet distinct safety considerations and risk profiles. >> Emma Kopra. 

Beth Ellwood. Large survey suggests psilocybin is a “relatively safe” drug, with serious reactions being rare and short-lived. May 4, 2022. 


Also

keyword 'magic string' in FonT


keyword 'psychedelic' in FonT


Keywords: brain, drugs, magic string, magic mushrooms, psilocybin, psychedelic


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sabato 26 marzo 2022

# gst life: apropos of critical points, love (at first sight and love from liking or friendship) might be a second-order phase transition.

<< The hypothesis of the human brain operation in vicinity of a critical point has been a matter of a hot debate in the recent years. >>

<< In this work, (AA) suggest that love might be an example of a second-order phase transition occurring in the brain. (They) show that this hypothesis explains a lot of well-known properties of love. Analyzing several most famous literature examples and a private diary, (they) show that the intensity of feelings exhibits a universal scaling behavior, distinguishing two cases: love at first sight and love developing from liking or friendship (friends first), both being studied in psychology. >>

The theory of second-order phase transitions developed by L.D. Landau (1980) << has inspired a lot of activity in physics, because it turned out that such transitions are characterized by a universal scaling behavior. Independently of the nature of the system, their parameters exhibit power law dependencies on the dimensionless parameter (temperature). >>

<< The key hypothesis of the present work is that love is a second-order phase transition occurring in the human brain under the influence of hormones, such as dopamine and serotonin (..). The brain switches from the normal operation in the critical regime to the supercritical regime because of the increase of the excitation (more dopamine) and reduction of the inhibition (less serotonin) (..). The order parameter of the transition is the intensity of feelings: before the transition, the subject has no particular feelings, while after the transition the feelings are non-zero. The most direct consequence is that the order parameter should exhibit a universal power law behavior: the feelings should grow as a square root of time α ∼√ >>

<< Since it is impossible to analyze the human feelings directly during such uncontrollable phenomenon as ”love at first sight”, (AA) have decided to perform a quantitative study of the intensity of feelings depicted in the literature. (..) (They) have chosen three well-known books for this analysis: ”Romeo and Juliet” (W. Shakespeare), ”The Lily of the Valley” (H. de Balzac, (..)), and ”Martin Eden” (J. London). >>

<< the case of a non-zero external ”bias”, which is a situation that occurs more often than love at first sight. Indeed, one usually knows several persons better than all the others, and thus some positive feelings towards some of them can be present before the transition occurs. (..) To study this transition quantitatively, (AA) have chosen another well-known book, ”Jane Eyre” by Charlotte Bronte. This books is also quite autobiographic, and famous for the psychological details, that got its author the title of ”first historian of the private consciousness”. The delay between the initial acquaintance and love is now of several weeks (about 45 days).

Dmitry Solnyshkov, Guillaume Malpuech. Love might be a second-order phase transition. arXiv: 2203.13246v1 [cond-mat.stat-mech]. Mar 24, 2022. 


Also

keyword 'transition' in FonT: 


keyword 'transizione' | 'transition' in Notes (quasi-stochastic poetry): 



keywords: gst, life, love, transitions,  critical point, phasetransition, second-order phase transition, brain, mind, behavior.







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mercoledì 2 marzo 2022

# life; a hypothetical externalization of knowledge effects; humans are thought to have decreased in brain volume since the end of the last ice age (3,000 y.ago)


<< Human brain size nearly quadrupled in the six million years since Homo last shared a common ancestor with chimpanzees, but human brains are thought to have decreased in volume since the end of the last Ice Age. The timing and reason for this decrease is enigmatic. Here (AA) use change-point analysis to estimate the timing of changes in the rate of hominin brain evolution. (They) find that hominin brains experienced positive rate changes at 2.1 and 1.5 million years ago, coincident with the early evolution of Homo and technological innovations evident in the archeological record. But (AA) also find that human brain size reduction was surprisingly recent, occurring in the last 3,000 years. >>

Jeremy M. DeSilva, James F. A. Traniello, et al. When and Why Did Human Brains Decrease in Size? A New Change-Point Analysis and Insights From Brain Evolution in Ants. Front. Ecol. Evol.,  doi: 10.3389/ fevo.2021.742639. Oct 22, 2021. 


When and why did human brains decrease in size 3,000 years ago? Ants may hold clues. Frontiers. Oct 22, 2021.


Also

keyword 'nomade' | 'nomad' | 'nomads' | 'nomadic' | 'hunter-gatherers' in FonT






keyword 'nomade' | 'nomadi' in Notes (quasi-stochastic poetry)




keywords: evolution, brain, brain size, nomads, post-nomads, sociocultural effects



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