%0 Journal Article
%T Binaurality and azimuth tuning of neurons in the auditory cortex of the big brown bat<br>
%A Junxian Shen
%A Qicai Chen
%A <br>
%J 科学通报(英文版)
%D 2002
%I 
%X By using a combined closed and free-field stimulation system, binaurality and azimuth tuning of the neurons in the auditory cortex of the big brown bat, Eptesicus fuscus, were studied. A variety of azimuth-tuning functions were demonstrated for the binaural neurons. The large majority of EE (contralateral and ipsilateral excitatory) neurons exhibited azimuth selectivity with the best azimuths (BA) at contralateral 30(- 40(, some at ipsilateral 20(-40( and preferred azimuth ranges (PAR, response amplitude ≥75% of maximum) between 8( and 40(. Sound source azimuths strongly modulate spike counts with a mean modulation depth of 83.8% for EE neurons. EI (contralateral excitatory and ipsilateral inhibitory) neurons have simple azimuth tuning with BA located at contralateral 20(-40( and a broad PAR ranged from 30( to 55(. The present results suggest that azimuth-tuning characteristics of binaural neurons in the auditory cortex of the bat are of significance for acoustic behaviour.
%K bat
%K auditory cortex
%K binaural neurons
%K azimuth tuning<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=CB0C93F08B8ABEE1B68DC3A3B54FBEFD&yid=C3ACC247184A22C1&vid=F4B561950EE1D31A&iid=59906B3B2830C2C5&sid=6A2E9D0F5619615A&eid=4E3F821C82005C21&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=15