論文

査読有り 国際誌
2012年11月

Effects of acute nicotine on auditory change-related cortical responses.

Psychopharmacology
  • Naofumi Otsuru
  • ,
  • Aki Tsuruhara
  • ,
  • Eishi Motomura
  • ,
  • Hisashi Tanii
  • ,
  • Makoto Nishihara
  • ,
  • Koji Inui
  • ,
  • Ryusuke Kakigi

224
2
開始ページ
327
終了ページ
35
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s00213-012-2757-2

RATIONALE AND OBJECTIVE: Nicotine is known to have enhancing effects on some aspects of attention and cognition. The purpose of the present study was to elucidate the effects of nicotine on pre-attentive change-related cortical activity. METHODS: Change-related cortical activity in response to an abrupt increase (3 dB) and decrease (6 dB) in sound pressure in a continuous sound was recorded by using magnetoencephalography. Nicotine was administered with a nicotine gum (4 mg of nicotine). Eleven healthy nonsmokers were tested with a double-blind and placebo-controlled design. Effects of nicotine on the main component of the onset response peaking at around 50 ms (P50m) and the main component of the change-related response at around 120 ms (Change-N1m) were investigated. RESULTS: Nicotine failed to affect P50m, while it significantly increased the amplitude of Change-N1m evoked by both auditory changes. The magnitude of the amplitude increase was similar among subjects regardless of the magnitude of the baseline response, which resulted in the percent increase of Change-N1m being greater for subjects with Change-N1m of smaller amplitude. CONCLUSIONS: Since Change-N1m represents a pre-attentive automatic process to encode new auditory events, the present results suggest that nicotine can exert beneficial cognitive effects without a direct impact on attention.

リンク情報
DOI
https://doi.org/10.1007/s00213-012-2757-2
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/22707251
ID情報
  • DOI : 10.1007/s00213-012-2757-2
  • ISSN : 0033-3158
  • PubMed ID : 22707251

エクスポート
BibTeX RIS