| Literature DB >> 25092127 |
Evan M Hill1, Gimseong Koay, Rickye S Heffner, Henry E Heffner.
Abstract
The pure-tone thresholds of four domestic female chickens were determined from 2 Hz to 9 kHz using the method of conditioned suppression/avoidance. At a level of 60 dB sound pressure level (re 20 μN/m(2)), their hearing range extends from 9.1 Hz to 7.2 kHz, with a best sensitivity of 2.6 dB at 2 kHz. Chickens have better sensitivity than humans for frequencies below 64 Hz; indeed, their sensitivity to infrasound exceeds that of the homing pigeon. However, when threshold testing moved to the lower frequencies, the animals required additional training before their final thresholds were obtained, suggesting that they may perceive frequencies below 64 Hz differently than higher frequencies.Entities:
Mesh:
Year: 2014 PMID: 25092127 DOI: 10.1007/s00359-014-0929-8
Source DB: PubMed Journal: J Comp Physiol A Neuroethol Sens Neural Behav Physiol ISSN: 0340-7594 Impact factor: 1.836