ゆらぎ背景音呈示環境における認知課題遂行時の事象関連電位

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2014/02/01

タイトル(英語): Ambient Noise Effects on Event-Related Potentials during Cognitive Activation

著者名: 安川　知志（東北学院大学大学院工学研究科），加藤　和夫（東北学院大学工学部），鈴木　和憲（（株）竹中工務店技術研究所），石川　敦雄（（株）竹中工務店技術研究所）

著者名(英語): Satoshi Yasukawa (Graduate School of Engineering, Tohoku Gakuin University), Kazuo Kato (Faculty of Engineering, Tohoku Gkuin University), Kazunori Suzuki (Takenaka Research and Development Institute, Takenaka Corporation), Atsuo Ishikawa (Takenaka Research and Development Institute, Takenaka Corporation)

キーワード: ゆらぎ背景音，事象関連電位，N-back課題　　Ambient Fluctuation Noise，Event-Related Potential，N-back Task

要約(英語): The aim of this study was to characterize the neural activation that was associated with the performance of intellectual activities under the influence of Brownian noises that were similar to environmental noises in real spaces. An N-back task comprising 2 components, i.e., verbal and spatial tasks, was used to study working memory during 4 types of auditory stimuli. The 4 types of auditory stimuli were as follows: sounds with frequency characteristics of Brownian noise [No Modulation (NM)] and with their amplitudes modulated 0.05-1 Hz, and sounds with frequency characteristics of White (slope of power spectral density, 1/f0), Pink (1/f), and Brownian noise (1/f2). Event-related potentials (ERPs) were recorded from 60 electrodes on the scalp and analyzed. Seven healthy men who were 21-23 years old participated in the experiments. For the NM, the root mean squares (RMS) of the ERPs that were observed included a negative peak component around 150 ms in the parietooccipital area (N1) and a positive component around 330 ms in the centroparietal area (P3) in both tasks, as well as for other auditory stimuli. The White modulation sound was the most influential, with a P3 amplitude in the spatial task in the frontal and central regions. These results suggested that the White sound during a spatial task affected the neural activation that was associated with attention accompanied with working memory activity in the N-back task.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.134 No.2 （2014） 特集：知覚情報技術の最前線

本誌掲載ページ: 277-285 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/2/134_277/_article/-char/ja/