martedì 1 novembre 2016

# s-behav: the intricate performance (dancing and singing) of a jumping spider

AA << present behavioral and neurophysiological evidence that [Jumping spiders (Salticidae)]  perceive and respond to airborne acoustic stimuli, even when the distance between the animal and the sound source is relatively large (∼3 m) and with stimulus amplitudes at the position of the spider of ∼65 dB sound pressure level (SPL) >>

<< Behavioral experiments with the jumping spider Phidippus audax reveal that these animals respond to low-frequency sounds (80 Hz; 65 dB SPL) by freezing—a common anti-predatory behavior characteristic of an acoustic startle response >>

<< Neurophysiological recordings from auditory-sensitive neural units in the brains of these jumping spiders showed responses to low-frequency tones (80 Hz at ∼65 dB SPL)—recordings that also represent the first record of acoustically responsive neural units in the jumping spider brain.  Responses persisted even when the distances between spider and stimulus source exceeded 3 m and under anechoic conditions. >>

Paul S. Shamble, Gil Menda, et al.
Airborne Acoustic Perception by a Jumping Spider. Current Biology. DOI: 10.1016/j.cub.2016.08.041 Publ. Oct. 13, 2016

Jaymi Heimbuch. Jumping spider males dance and sing ... Oct. 4, 2016.

FonT: sarebbe interessante valutare se e quanto tempo prima la struttura neuroacustica del Phidippus audax sia in grado di percepire e discriminare le basse freq dei movimenti  tellurici profondi che successivamente manifesteranno  macro episodi di superficie (earthquake).


Richard A. Lovett. Scientists Seek Foolproof Signal to Predict Earthquakes. National Geographic News. Jan. 5, 2013

Vanessa Bates Ramirez. Earthquakes Will Be as Predictable as Hurricanes Thanks to AI. Sep 27, 2016

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