Appearance and modulation of a reactive temporal-lobe 8–10-Hz tau-rhythm

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Appearance and modulation of a reactive temporal-lobe 8–10-Hz tau-rhythm. / Yokosawa, Koichi; Murakami, Yui; Sato, Hiroaki.

julkaisussa: Neuroscience Research, Vuosikerta 150, 01.2020, s. 44-50.

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Yokosawa, Koichi ; Murakami, Yui ; Sato, Hiroaki. / Appearance and modulation of a reactive temporal-lobe 8–10-Hz tau-rhythm. Julkaisussa: Neuroscience Research. 2020 ; Vuosikerta 150. Sivut 44-50.

Bibtex - Lataa

@article{6d9b28790b20461184a9da2d6d377e44,
title = "Appearance and modulation of a reactive temporal-lobe 8–10-Hz tau-rhythm",
abstract = "Spontaneous 8- to 10-Hz “tau-rhythm” in magnetoencephalographic (MEG) recordings has been reported to originate in the auditory cortex and be suppressed by sound. For unknown reasons however, tau-rhythm is often difficult to detect. In this study, we sought to characterize its emergence and auditory reactivity. Using a 306-channel MEG on 26 right-handed participants, we delivered six-second-long, natural, monaural sounds with pleasant, unpleasant, or neutral emotional valence. In eight participants, a clear, sound-related bilateral suppression of 8–10 Hz tau-rhythm occurred in the temporal areas, close to the source of the 100-ms auditory response. Moreover, these eight “tau subjects” exhibited significantly larger temporal-lobe theta-band (4–8 Hz) power over the entire experimental period compared to the remaining 18 “non-tau subjects”. As it is known that larger theta power is one of signs of drowsiness, this result is consistent with a previously proposed idea that tau-rhythm emerges during drowsiness. Tau-rhythm was furthermore significantly affected by emotional valence in the right hemisphere, where it was respectively suppressed by unpleasant and neutral sounds 8{\%} and 6{\%} more than by pleasant sounds, significantly. Altogether, our results reveal characteristics of tau-rhythm appearance and modulation which have hitherto been difficult to detect non-invasively.",
keywords = "Auditory response, Drowsiness, Emotion, Magnetoencephalography, Rhythm",
author = "Koichi Yokosawa and Yui Murakami and Hiroaki Sato",
note = "YOKOSAWA OLLUT 2 VIIKKOA HARIN VIERAANA AALLOSSA",
year = "2020",
month = "1",
doi = "10.1016/j.neures.2019.02.002",
language = "English",
volume = "150",
pages = "44--50",
journal = "Neuroscience Research (Cognitive/Computational Neuroscience)",
issn = "0168-0102",
publisher = "Elsevier Ireland Ltd",

}

RIS - Lataa

TY - JOUR

T1 - Appearance and modulation of a reactive temporal-lobe 8–10-Hz tau-rhythm

AU - Yokosawa, Koichi

AU - Murakami, Yui

AU - Sato, Hiroaki

N1 - YOKOSAWA OLLUT 2 VIIKKOA HARIN VIERAANA AALLOSSA

PY - 2020/1

Y1 - 2020/1

N2 - Spontaneous 8- to 10-Hz “tau-rhythm” in magnetoencephalographic (MEG) recordings has been reported to originate in the auditory cortex and be suppressed by sound. For unknown reasons however, tau-rhythm is often difficult to detect. In this study, we sought to characterize its emergence and auditory reactivity. Using a 306-channel MEG on 26 right-handed participants, we delivered six-second-long, natural, monaural sounds with pleasant, unpleasant, or neutral emotional valence. In eight participants, a clear, sound-related bilateral suppression of 8–10 Hz tau-rhythm occurred in the temporal areas, close to the source of the 100-ms auditory response. Moreover, these eight “tau subjects” exhibited significantly larger temporal-lobe theta-band (4–8 Hz) power over the entire experimental period compared to the remaining 18 “non-tau subjects”. As it is known that larger theta power is one of signs of drowsiness, this result is consistent with a previously proposed idea that tau-rhythm emerges during drowsiness. Tau-rhythm was furthermore significantly affected by emotional valence in the right hemisphere, where it was respectively suppressed by unpleasant and neutral sounds 8% and 6% more than by pleasant sounds, significantly. Altogether, our results reveal characteristics of tau-rhythm appearance and modulation which have hitherto been difficult to detect non-invasively.

AB - Spontaneous 8- to 10-Hz “tau-rhythm” in magnetoencephalographic (MEG) recordings has been reported to originate in the auditory cortex and be suppressed by sound. For unknown reasons however, tau-rhythm is often difficult to detect. In this study, we sought to characterize its emergence and auditory reactivity. Using a 306-channel MEG on 26 right-handed participants, we delivered six-second-long, natural, monaural sounds with pleasant, unpleasant, or neutral emotional valence. In eight participants, a clear, sound-related bilateral suppression of 8–10 Hz tau-rhythm occurred in the temporal areas, close to the source of the 100-ms auditory response. Moreover, these eight “tau subjects” exhibited significantly larger temporal-lobe theta-band (4–8 Hz) power over the entire experimental period compared to the remaining 18 “non-tau subjects”. As it is known that larger theta power is one of signs of drowsiness, this result is consistent with a previously proposed idea that tau-rhythm emerges during drowsiness. Tau-rhythm was furthermore significantly affected by emotional valence in the right hemisphere, where it was respectively suppressed by unpleasant and neutral sounds 8% and 6% more than by pleasant sounds, significantly. Altogether, our results reveal characteristics of tau-rhythm appearance and modulation which have hitherto been difficult to detect non-invasively.

KW - Auditory response

KW - Drowsiness

KW - Emotion

KW - Magnetoencephalography

KW - Rhythm

UR - http://www.scopus.com/inward/record.url?scp=85061653266&partnerID=8YFLogxK

U2 - 10.1016/j.neures.2019.02.002

DO - 10.1016/j.neures.2019.02.002

M3 - Article

AN - SCOPUS:85061653266

VL - 150

SP - 44

EP - 50

JO - Neuroscience Research (Cognitive/Computational Neuroscience)

JF - Neuroscience Research (Cognitive/Computational Neuroscience)

SN - 0168-0102

ER -

ID: 39597466