期刊
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
卷 25, 期 4, 页码 355-373出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0149-7634(01)00019-7
关键词
cognitive brain potentials; orienting response; novelty P3; P3a; P3b
资金
- NIA NIH HHS [AG09988, AG05213] Funding Source: Medline
- NICHD NIH HHS [HD37193, HD14959] Funding Source: Medline
- NIMH NIH HHS [MH01225] Funding Source: Medline
A review of the literature that examines event-related brain potentials (ERPs) and novelty processing reveals that the orienting response engendered by deviant or unexpected events consists of a characteristic ERP pattern, comprised sequentially of the mismatch negativity (MMN) and the novelty P3 or P3a. A wide variety of evidence suggests that the MMN reflects the detection of deviant events, whereas the P3a is associated more with the evaluation of those events for subsequent behavioral action. On the scalp, the novelty P3a, is comprised of at least two aspects, one frontal the other posterior, each with different cognitive (and presumably neurologic) correlates. Intracranial ERP investigations and studies of patients with localized brain lesions (and, to some extent, fMRI data) converge with the scalp-recorded data in suggesting a widespread neural network, the different aspects of which respond differentially to stimulus and task characteristics. (C) 2001 Elsevier Science Ltd. All rights reserved.
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