共 3 条
Pre-stimulus beta oscillations within left posterior sylvian regions impact auditory temporal order judgment accuracy
被引:29
|作者:
Bernasconi, Fosco
[1
,2
,3
]
Manuel, Aurelie L.
[1
,2
,3
]
Murray, Micah M.
[1
,2
,4
,5
,6
]
Spierer, Lucas
[1
,2
]
机构:
[1] Vaudois Univ Hosp Ctr, Dept Clin Neurosci, Neuropsychol & Neurorehabil Serv, Lausanne, Switzerland
[2] Univ Lausanne, Lausanne, Switzerland
[3] Vaudois Univ Hosp Ctr, Community Psychiat Serv, Lausanne, Switzerland
[4] Ctr Biomed Imaging, Lausanne, Switzerland
[5] Vaudois Univ Hosp Ctr, Dept Radiol, Lausanne, Switzerland
[6] Vanderbilt Univ, Med Ctr, Dept Hearing & Speech Sci, Nashville, TN USA
基金:
瑞士国家科学基金会;
关键词:
EEG;
Oscillation;
Temporal order judgment;
Auditory;
Temporal lobe;
HUMAN BRAIN;
BAND OSCILLATIONS;
ATTENTION;
MECHANISMS;
SCHIZOPHRENIA;
LOCALIZATION;
POTENTIALS;
COMPONENT;
CORTEX;
P50;
D O I:
10.1016/j.ijpsycho.2010.10.017
中图分类号:
B84 [心理学];
学科分类号:
04 ;
0402 ;
摘要:
Both neural and behavioral responses to stimuli are influenced by the state of the brain immediately preceding their presentation, notably by pre-stimulus oscillatory activity. Using frequency analysis of high-density electroencephalogram coupled with source estimations, the present study investigated the role of pre-stimulus oscillatory activity in auditory spatial temporal order judgments (TOJ). Oscillations within the beta range (i.e. 18-23 Hz) were significantly stronger before accurate than inaccurate TOJ trials. Distributed source estimations identified bilateral posterior sylvian regions as the principal contributors to pre-stimulus beta oscillations. Activity within the left posterior sylvian region was significantly stronger before accurate than inaccurate TOJ trials. We discuss our results in terms of a modulation of sensory gating mechanisms mediated by beta activity. (C) 2010 Elsevier B.V. All rights reserved.
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页码:244 / 248
页数:5
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