ERPs associated with visual duration discriminations in prefrontal and parietal cortex
ERPs associated with visual duration discriminations in prefrontal and parietal cortex
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DOI：
10.1016/j.actpsy.2006.07.003
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发表时间：
2007-05-01
影响因子：
1.8
通讯作者：
Rebai, Mohamed
中科院分区：
文献类型：
--
作者：
Le Dantec, Christophe;Gontier, Emilie;Rebai, Mohamed
采用事件相关电位（ERP）研究了在时距辨别任务中，前额叶和顶叶联合皮层在选择性注意和短时记忆功能中的作用。受试者在区分第一个刺激相对于第二个刺激时表现更好，而不是相反。两个关联的负变化（CN-V）获得每个刺激持续时间在前额叶区，以及两个P300在顶叶区。在第一次刺激（S1）时记录的CNVS 1波与双侧的选择性注意有关，而在左半球记录的P300（S1）波可能与保持选择性注意有关，在第二次刺激（S2）时记录的双侧CNVS 2波和右侧P300（S2）波可能与工作记忆有关。结果表明，记录活动在前额叶和顶叶联合皮质是紧密相连的任务参数和行为表现。(c)2006 Elsevier B. V.保留所有权利。
An event-related potentials (ERP) study was undertaken to examine the role of prefrontal and parietal association cortices on selective attention and short-term memory functions in a duration discrimination task. Subjects performed better when discriminating the first stimulus relative to the second and not the reverse. Two contingent negative variations (CN-V) were obtained for each stimulus duration at prefrontal regions, as well as two P300s at parietal regions. The CNVS1 component recorded during the first stimulus (S1) appeared to be involved in selective attention at bilateral sites, while the P300(S1) component in the left hemisphere may be implicated in retaining it. The CNVS2 wave, displayed during the second stimulus (S2), at bilateral sites and the right-sided P300(S2) wave seem to be implicated in working memory. The results indicate that recorded activity at prefrontal and parietal association cortices is tightly linked to task parameters and behavioral performances. (c) 2006 Elsevier B.V. All rights reserved.