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Rhythm sensitivity in macaque monkeys

This study provides evidence that monkeys are rhythm sensitive. We composed isochronous tone sequences consisting of repeating triplets of two short tones and one long tone which humans perceive as repeating triplets of two weak and one strong beat. This regular sequence was compared to an irregular...

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Autores principales: Selezneva, Elena, Deike, Susann, Knyazeva, Stanislava, Scheich, Henning, Brechmann, André, Brosch, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764333/
https://www.ncbi.nlm.nih.gov/pubmed/24046732
http://dx.doi.org/10.3389/fnsys.2013.00049
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author Selezneva, Elena
Deike, Susann
Knyazeva, Stanislava
Scheich, Henning
Brechmann, André
Brosch, Michael
author_facet Selezneva, Elena
Deike, Susann
Knyazeva, Stanislava
Scheich, Henning
Brechmann, André
Brosch, Michael
author_sort Selezneva, Elena
collection PubMed
description This study provides evidence that monkeys are rhythm sensitive. We composed isochronous tone sequences consisting of repeating triplets of two short tones and one long tone which humans perceive as repeating triplets of two weak and one strong beat. This regular sequence was compared to an irregular sequence with the same number of randomly arranged short and long tones with no such beat structure. To search for indication of rhythm sensitivity we employed an oddball paradigm in which occasional duration deviants were introduced in the sequences. In a pilot study on humans we showed that subjects more easily detected these deviants when they occurred in a regular sequence. In the monkeys we searched for spontaneous behaviors the animals executed concomitant with the deviants. We found that monkeys more frequently exhibited changes of gaze and facial expressions to the deviants when they occurred in the regular sequence compared to the irregular sequence. In addition we recorded neuronal firing and local field potentials from 175 sites of the primary auditory cortex during sequence presentation. We found that both types of neuronal signals differentiated regular from irregular sequences. Both signals were stronger in regular sequences and occurred after the onset of the long tones, i.e., at the position of the strong beat. Local field potential responses were also significantly larger for the durational deviants in regular sequences, yet in a later time window. We speculate that these temporal pattern-selective mechanisms with a focus on strong beats and their deviants underlie the perception of rhythm in the chosen sequences.
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spelling pubmed-37643332013-09-17 Rhythm sensitivity in macaque monkeys Selezneva, Elena Deike, Susann Knyazeva, Stanislava Scheich, Henning Brechmann, André Brosch, Michael Front Syst Neurosci Neuroscience This study provides evidence that monkeys are rhythm sensitive. We composed isochronous tone sequences consisting of repeating triplets of two short tones and one long tone which humans perceive as repeating triplets of two weak and one strong beat. This regular sequence was compared to an irregular sequence with the same number of randomly arranged short and long tones with no such beat structure. To search for indication of rhythm sensitivity we employed an oddball paradigm in which occasional duration deviants were introduced in the sequences. In a pilot study on humans we showed that subjects more easily detected these deviants when they occurred in a regular sequence. In the monkeys we searched for spontaneous behaviors the animals executed concomitant with the deviants. We found that monkeys more frequently exhibited changes of gaze and facial expressions to the deviants when they occurred in the regular sequence compared to the irregular sequence. In addition we recorded neuronal firing and local field potentials from 175 sites of the primary auditory cortex during sequence presentation. We found that both types of neuronal signals differentiated regular from irregular sequences. Both signals were stronger in regular sequences and occurred after the onset of the long tones, i.e., at the position of the strong beat. Local field potential responses were also significantly larger for the durational deviants in regular sequences, yet in a later time window. We speculate that these temporal pattern-selective mechanisms with a focus on strong beats and their deviants underlie the perception of rhythm in the chosen sequences. Frontiers Media S.A. 2013-09-06 /pmc/articles/PMC3764333/ /pubmed/24046732 http://dx.doi.org/10.3389/fnsys.2013.00049 Text en Copyright © 2013 Selezneva, Deike, Knyazeva, Scheich, Brechmann and Brosch. http://creativecommons.org/licenses/by/3.0/ 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) or licensor 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
Selezneva, Elena
Deike, Susann
Knyazeva, Stanislava
Scheich, Henning
Brechmann, André
Brosch, Michael
Rhythm sensitivity in macaque monkeys
title Rhythm sensitivity in macaque monkeys
title_full Rhythm sensitivity in macaque monkeys
title_fullStr Rhythm sensitivity in macaque monkeys
title_full_unstemmed Rhythm sensitivity in macaque monkeys
title_short Rhythm sensitivity in macaque monkeys
title_sort rhythm sensitivity in macaque monkeys
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764333/
https://www.ncbi.nlm.nih.gov/pubmed/24046732
http://dx.doi.org/10.3389/fnsys.2013.00049
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