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Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences

This study finds a neuronal correlate of auditory perceptual streaming in the primary auditory cortex for sequences of tone complexes that have the same amplitude spectrum but a different phase spectrum. Our finding is based on microelectrode recordings of multiunit activity from 270 cortical sites...

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Autores principales: Knyazeva, Stanislava, Selezneva, Elena, Gorkin, Alexander, Aggelopoulos, Nikolaos C., Brosch, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797536/
https://www.ncbi.nlm.nih.gov/pubmed/29440999
http://dx.doi.org/10.3389/fnint.2018.00004
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author Knyazeva, Stanislava
Selezneva, Elena
Gorkin, Alexander
Aggelopoulos, Nikolaos C.
Brosch, Michael
author_facet Knyazeva, Stanislava
Selezneva, Elena
Gorkin, Alexander
Aggelopoulos, Nikolaos C.
Brosch, Michael
author_sort Knyazeva, Stanislava
collection PubMed
description This study finds a neuronal correlate of auditory perceptual streaming in the primary auditory cortex for sequences of tone complexes that have the same amplitude spectrum but a different phase spectrum. Our finding is based on microelectrode recordings of multiunit activity from 270 cortical sites in three awake macaque monkeys. The monkeys were presented with repeated sequences of a tone triplet that consisted of an A tone, a B tone, another A tone and then a pause. The A and B tones were composed of unresolved harmonics formed by adding the harmonics in cosine phase, in alternating phase, or in random phase. A previous psychophysical study on humans revealed that when the A and B tones are similar, humans integrate them into a single auditory stream; when the A and B tones are dissimilar, humans segregate them into separate auditory streams. We found that the similarity of neuronal rate responses to the triplets was highest when all A and B tones had cosine phase. Similarity was intermediate when the A tones had cosine phase and the B tones had alternating phase. Similarity was lowest when the A tones had cosine phase and the B tones had random phase. The present study corroborates and extends previous reports, showing similar correspondences between neuronal activity in the primary auditory cortex and auditory streaming of sound sequences. It also is consistent with Fishman’s population separation model of auditory streaming.
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spelling pubmed-57975362018-02-13 Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences Knyazeva, Stanislava Selezneva, Elena Gorkin, Alexander Aggelopoulos, Nikolaos C. Brosch, Michael Front Integr Neurosci Neuroscience This study finds a neuronal correlate of auditory perceptual streaming in the primary auditory cortex for sequences of tone complexes that have the same amplitude spectrum but a different phase spectrum. Our finding is based on microelectrode recordings of multiunit activity from 270 cortical sites in three awake macaque monkeys. The monkeys were presented with repeated sequences of a tone triplet that consisted of an A tone, a B tone, another A tone and then a pause. The A and B tones were composed of unresolved harmonics formed by adding the harmonics in cosine phase, in alternating phase, or in random phase. A previous psychophysical study on humans revealed that when the A and B tones are similar, humans integrate them into a single auditory stream; when the A and B tones are dissimilar, humans segregate them into separate auditory streams. We found that the similarity of neuronal rate responses to the triplets was highest when all A and B tones had cosine phase. Similarity was intermediate when the A tones had cosine phase and the B tones had alternating phase. Similarity was lowest when the A tones had cosine phase and the B tones had random phase. The present study corroborates and extends previous reports, showing similar correspondences between neuronal activity in the primary auditory cortex and auditory streaming of sound sequences. It also is consistent with Fishman’s population separation model of auditory streaming. Frontiers Media S.A. 2018-01-30 /pmc/articles/PMC5797536/ /pubmed/29440999 http://dx.doi.org/10.3389/fnint.2018.00004 Text en Copyright © 2018 Knyazeva, Selezneva, Gorkin, Aggelopoulos and Brosch. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Knyazeva, Stanislava
Selezneva, Elena
Gorkin, Alexander
Aggelopoulos, Nikolaos C.
Brosch, Michael
Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title_full Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title_fullStr Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title_full_unstemmed Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title_short Neuronal Correlates of Auditory Streaming in Monkey Auditory Cortex for Tone Sequences without Spectral Differences
title_sort neuronal correlates of auditory streaming in monkey auditory cortex for tone sequences without spectral differences
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797536/
https://www.ncbi.nlm.nih.gov/pubmed/29440999
http://dx.doi.org/10.3389/fnint.2018.00004
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