Click train encoding in primary and non-primary auditory cortex of anesthetized macaque monkeys

Neuroscience
E OshurkovaM Brosch

Abstract

We studied encoding of temporally modulated sounds in 28 multiunits in the primary auditory cortical field (AI) and in 35 multiunits in the secondary auditory cortical field (caudomedial auditory cortical field, CM) by presenting periodic click trains with click rates between 1 and 300 Hz lasting for 2-4 s. We found that all multiunits increased or decreased their firing rate during the steady state portion of the click train and that all except two multiunits synchronized their firing to individual clicks in the train. Rate increases and synchronized responses were most prevalent and strongest at low click rates, as expressed by best modulation frequency, limiting frequency, percentage of responsive multiunits, and average rate response and vector strength. Synchronized responses occurred up to 100 Hz; rate response occurred up to 300 Hz. Both auditory fields responded similarly to low click rates but differed at click rates above approximately 12 Hz at which more multiunits in AI than in CM exhibited synchronized responses and increased rate responses and more multiunits in CM exhibited decreased rate responses. These findings suggest that the auditory cortex of macaque monkeys encodes temporally modulated sounds similar to t...Continue Reading

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Citations

Jun 25, 2013·Hearing Research·Mitchell SteinschneiderYonatan I Fishman
Oct 18, 2012·Proceedings of the National Academy of Sciences of the United States of America·Corrie R CamalierTroy A Hackett
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Feb 11, 2020·Frontiers in Computational Neuroscience·Isma ZulfiqarElia Formisano
May 7, 2020·Frontiers in Neuroscience·Stanislava KnyazevaMichael Brosch
Nov 17, 2020·Frontiers in Neuroscience·Andrzej PepłowskiMałgorzata Jakubowska
Jun 17, 2021·Cell Reports·Felix SchneiderTimothy D Griffiths

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