NDLI: Role of frequency band integration in sharpening frequency tunings of the inferior colliculus neurons in the big brown bat,Eptesicus fuscus

Content Provider	Springer Nature Link
Author	Wu, Feijian Chen, Qicai Jen, Philip H. S. Shen, Junxian
Copyright Year	2004
Abstract	By means of a particular two-tone stimulation paradigm in combination of using a pair of electrodes for simultaneously recording from two inferior colliculus (IC) neurons, the currentin vivo study is undertaken to explore the role of frequency band integration (FBI) in sharpening of frequency tuning in the big brown bat,Eptesicus fuscus. Three major results are found: (1) The paired neurons correlated to FBI are located not only within the same frequency filter bandwidth (FFB), but also across different FFBs. The relations of their frequency tuning curves (FTCs) are mainly of two types: the flank-overlapped and overlaid patterns. (2) Although the sharpness of FTCs between paired neurons is mutual, the sharpening efficiency of neurons located within the same FFB is higher than that of neurons across FFBs, and the FTCs of neurons with the best frequencies (BF) of 20 –30 kHz are most strongly sharpened. (3) The strength of FBI is weak near the BF but gradually increased with frequencies away from the BF of sound stimuli. This suggests that the dynamical FBI of the IC neurons located within and across the FFBs might be involved in the formation of functional FFB structures.
Starting Page	1026
Ending Page	1031
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	49
Issue Number	10
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2004-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	frequency band integration frequency tuning sharpen inferior colliculus bat Science Life Sciences Physics Chemistry/Food Science Earth Sciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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