NDLI: Species-specificity of temporal processing in the auditory midbrain of gray treefrogs: interval-counting neurons

Content Provider	Springer Nature Link
Author	Rose, Gary J. Hanson, Jessica L. Leary, Christopher J. Graham, Jalina A. Alluri, Rishi K. Vasquez Opazo, Gustavo A.
Copyright Year	2015
Abstract	Interval-counting neurons (ICNs) respond after a threshold number of sound pulses have occurred with specific intervals; a single aberrant interval can reset the counting process. Female gray treefrogs, Hyla chrysoscelis and H. versicolor, discriminate against synthetic ‘calls’ possessing a single interpulse interval 2–3 three times the optimal value, suggesting that ICNs are important for call recognition. The calls of H. versicolor consist of pulses that are longer in duration, rise more slowly in amplitude and are repeated at a slower rate than those of H. chrysoscelis. Results of recordings from midbrain auditory neurons in these species include: (1) ICNs were found in both species and their temporal selectivity appeared to result from interplay between excitation and inhibition; (2) band-pass cells in H. versicolor were tuned to slower pulse rates than those in H. chrysoscelis; (3) ICNs that were selective for slow-rise pulse shape were found almost exclusively in H. versicolor, but fast-rise-selective neurons were found in both species, and (4) band-suppression ICNs in H. versicolor showed response minima at higher pulse rates than those in H. chrysoscelis. Selectivity of midbrain ICNs for pulse rise time and repetition rate thus correlate well with discriminatory abilities of these species that promote reproductive isolation.
Starting Page	485
Ending Page	503
Page Count	19
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	201
Issue Number	5
e-ISSN	14321351
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-03-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Whole-cell recording Anurans Rise-time selectivity Amplitude modulation Inferior colliculus Animal Physiology Neurosciences Zoology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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