Abstract：
:Recently several event-related potential attention studies have described a prefrontal positivity at about the same latency as the posterior N2 (approximately 200-300 ms), variously termed the frontal selection positivity (FSP), the anterior P2 (P2a), or the frontal P3 (P3f). These components have a similar spatio-temporal distribution and similar eliciting properties, suggesting that they represent the same component. However, these components have been differentially interpreted as arising from neural systems of feature selection, stimulus evaluation, or response production. The present study employed a visual target detection (oddball) design with different response conditions: passive (no response), overt (keypress), and covert (silent count), to examine the impact of task relevance and response production on the frontal P2a. The results showed that the P2a was present to task-relevant stimuli but had the same scalp topography and estimated source-dipole locations in both overt and covert responding, indicative of an index of stimulus evaluation, rather than response production.
journal_name
Brain Cognjournal_title
Brain and cognitionauthors
Potts GFdoi
10.1016/j.bandc.2004.03.006subject
Has Abstractpub_date
2004-10-01 00:00:00pages
5-13issue
1eissn
0278-2626issn
1090-2147pii
S0278262604001356journal_volume
56pub_type
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journal_title：Brain and cognition
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2008.11.006
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pub_type： 杂志文章
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2008.01.009
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2018.06.006
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pub_type： 杂志文章
doi：10.1016/j.bandc.2013.07.007
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pub_type： 杂志文章
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pub_type： 杂志文章,随机对照试验
doi：10.1016/j.bandc.2011.07.010
更新日期：2011-11-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/s0278-2626(03)00142-8
更新日期：2003-11-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2014.09.006
更新日期：2014-11-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/s0278-2626(01)80048-8
更新日期：2001-06-01 00:00:00
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journal_title：Brain and cognition
pub_type： 临床试验,杂志文章
doi：10.1016/j.bandc.2004.06.007
更新日期：2004-11-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/s0278-2626(03)00077-0
更新日期：2003-07-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2014.04.010
更新日期：2014-07-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.bandc.2008.03.001
更新日期：2008-10-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/0278-2626(87)90133-3
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/s0278-2626(01)80066-x
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2018.03.007
更新日期：2018-06-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/0278-2626(90)90009-d
更新日期：1990-01-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2016.07.002
更新日期：2016-10-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章,评审
doi：10.1016/s0278-2626(03)00004-6
更新日期：2003-06-01 00:00:00
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2015.12.001
更新日期：2016-03-01 00:00:00
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pub_type： 杂志文章
doi：10.1006/brcg.1999.1134
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journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/s0278-2626(02)00504-3
更新日期：2002-11-01 00:00:00
abstract：UNLABELLED:The present study investigates cortical structures associated with personality dimension of positivity (POS) by using a standardized low-resolution brain electromagnetic tomography (sLORETA), which provides EEG localization measures that are independent of the recording reference. Resting EEG and self-report...
journal_title：Brain and cognition
pub_type： 杂志文章
doi：10.1016/j.bandc.2015.04.003
更新日期：2015-07-01 00:00:00
