Auditory sensory gating to the human voice: A preliminary MEG study

Yoji Hirano, Toshiaki Onitsuka, Toshihide Kuroki, Yuji Matsuki, Shogo Hirano, Toshihiko Maekawa, Shigenobu Kanba

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

The ability of the brain to suppress incoming irrelevant sensory input is termed 'sensory gating,' and auditory sensory gating is often indexed by the auditory evoked response. We recorded the auditory evoked magnetic fields to the human voice, using the conditioning-testing paradigm, to investigate whether or not healthy subjects show less activation to the second voice stimulus. Seventeen healthy adults (mean age 27.9 ± 4.8 years, 9 males and 8 females) participated in the experiment. The auditory stimuli were presented monaurally as a series of 120 paired voices, with 500-ms interstimulus intervals and 6-s interpaired stimulus intervals. The P50m and the N100m responses were investigated, and dipole source localization was performed. Root mean squares of both P50m and N100m were significantly suppressed to the second stimulus bilaterally, and the suppression was more significant in N100m. The N100m was located significantly more laterally than the P50m for both hemispheres. These results therefore demonstrate the presence of sensory gating for auditory inputs of the human voice in the primary auditory cortex and the auditory association area.

本文言語英語
ページ(範囲)260-269
ページ数10
ジャーナルPsychiatry Research - Neuroimaging
163
3
DOI
出版ステータス出版済み - 8月 30 2008

!!!All Science Journal Classification (ASJC) codes

  • 神経科学(その他)
  • 放射線学、核医学およびイメージング
  • 精神医学および精神衛生

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