PMID: 8592300Feb 1, 1996Paper

Neurons with different temporal firing patterns in the inferior colliculus of the little brown bat differentially process sinusoidal amplitude-modulated signals

Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology
C J CondonA S Feng

Abstract

We examined how well single neurons in the inferior colliculus (IC) of an FM bat (Myotis lucifugus) processed simple tone bursts of different duration and sinusoidal amplitude-modulated (SAM) signals that approximated passively heard natural sounds. Units' responses to SAM tones, measured in terms of average spike count and firing synchrony to the modulation envelope, were plotted as a function of the modulation frequency to construct their modulation transfer functions. These functions were classified according to their shape (e.g., band-, low-, high-, and all-pass). IC neurons having different temporal firing patterns to simple tone bursts (tonic, chopper, onset-late, and onset-immediate) exhibited different selectivities for SAM signals. All tonic and 83% of chopper neurons responded robustly to SAM signals and displayed a variety of spike count-based response functions. These neurons showed a decreased level of time-locking as the modulation frequency was increased, and thereby gave low-pass synchronization-based response functions. In contrast, 64% of onset-immediate, 37% of onset-late and 17% of chopper units failed to respond to SAM signals at any modulation frequency tested (5-800 Hz). Those onset neurons that did respo...Continue Reading

Citations

Aug 30, 2008·Proceedings of the National Academy of Sciences of the United States of America·Chen ChiuCynthia F Moss
Apr 1, 1999·Annual Review of Physiology·E Covey, J H Casseday
Feb 7, 2001·Annual Review of Psychology·A S Feng, R Ratnam
Dec 26, 2008·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Yi Zheng, Monty A Escabí
Mar 27, 2004·Physiological Reviews·P X JorisA Rees
Jul 19, 2017·Journal of the Association for Research in Otolaryngology : JARO·Kenneth E HancockBertrand Delgutte

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