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Title: Distractor effect of auditory rhythms on self-paced tapping in chimpanzees and humans
Authors: Hattori, Yuko  kyouindb  KAKEN_id
Tomonaga, Masaki  kyouindb  KAKEN_id  orcid (unconfirmed)
Matsuzawa, Tetsuro  kyouindb  KAKEN_id
Author's alias: 服部, 裕子
友永, 雅己
松沢, 哲郎
Issue Date: 1-Jul-2015
Publisher: Public Library of Science
Journal title: PLOS ONE
Volume: 10
Issue: 7
Thesis number: e0130682
Abstract: Humans tend to spontaneously align their movements in response to visual (e.g., swinging pendulum) and auditory rhythms (e.g., hearing music while walking). Particularly in the case of the response to auditory rhythms, neuroscientific research has indicated that motor resources are also recruited while perceiving an auditory rhythm (or regular pulse), suggesting a tight link between the auditory and motor systems in the human brain. However, the evolutionary origin of spontaneous responses to auditory rhythms is unclear. Here, we report that chimpanzees and humans show a similar distractor effect in perceiving isochronous rhythms during rhythmic movement. We used isochronous auditory rhythms as distractor stimuli during self-paced alternate tapping of two keys of an electronic keyboard by humans and chimpanzees. When the tempo was similar to their spontaneous motor tempo, tapping onset was influenced by intermittent entrainment to auditory rhythms. Although this effect itself is not an advanced rhythmic ability such as dancing or singing, our results suggest that, to some extent, the biological foundation for spontaneous responses to auditory rhythms was already deeply rooted in the common ancestor of chimpanzees and humans, 6 million years ago. This also suggests the possibility of a common attentional mechanism, as proposed by the dynamic attending theory, underlying the effect of perceiving external rhythms on motor movement.
Description: ヒトもチンパンジーも自分のリズムに近いリズム音を聞くと自発的に引き込まれる. 京都大学プレスリリース. 2015-07-22.
Rights: © 2015 Hattori et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI(Published Version): 10.1371/journal.pone.0130682
PubMed ID: 26132703
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