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題名 Depth of facial expression processing depends on stimulus visibility: Behavioral and electrophysiological evidence of priming effects
作者 徐慎謀
Hsu, Shen-Mou; Hetrick, William P ; Pessoa, Luiz
貢獻者 心腦學中心
日期 2008
上傳時間 12-May-2014 15:07:18 (UTC+8)
摘要 Participants performed a priming task during which emotional faces served as prime stimuli and emotional words served as targets. Prime-target pairs were congruent or incongruent, and two levels of prime visibility were obtained by varying the duration of the masked primes. To probe a neural signature of the impact of the masked primes, lateralized readiness potentials (LRPs) were recorded over motor cortex. In the high-visibility condition, responses to word targets were faster when the prime-target pairs were congruent than when they were incongruent, providing evidence of priming effects. In line with the behavioral results, the electrophysiological data showed that high-visibility face primes resulted in LRP differences between congruent and incongruent trials, suggesting that prime stimuli initiated motor preparation. Contrary to the above pattern, no evidence for reaction time or LRP differences was observed in the low-visibility condition, revealing that the depth of facial expression processing is dependent on stimulus visibility.
關聯 Cognitive, Affective, & Behavioral Neuroscience, 8, 282-292
資料類型 article
DOI http://dx.doi.org/10.3758/CABN.8.3.282
dc.contributor 心腦學中心en_US
dc.creator (作者) 徐慎謀zh_TW
dc.creator (作者) Hsu, Shen-Mou; Hetrick, William P ; Pessoa, Luizen_US
dc.date (日期) 2008en_US
dc.date.accessioned 12-May-2014 15:07:18 (UTC+8)-
dc.date.available 12-May-2014 15:07:18 (UTC+8)-
dc.date.issued (上傳時間) 12-May-2014 15:07:18 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/65939-
dc.description.abstract (摘要) Participants performed a priming task during which emotional faces served as prime stimuli and emotional words served as targets. Prime-target pairs were congruent or incongruent, and two levels of prime visibility were obtained by varying the duration of the masked primes. To probe a neural signature of the impact of the masked primes, lateralized readiness potentials (LRPs) were recorded over motor cortex. In the high-visibility condition, responses to word targets were faster when the prime-target pairs were congruent than when they were incongruent, providing evidence of priming effects. In line with the behavioral results, the electrophysiological data showed that high-visibility face primes resulted in LRP differences between congruent and incongruent trials, suggesting that prime stimuli initiated motor preparation. Contrary to the above pattern, no evidence for reaction time or LRP differences was observed in the low-visibility condition, revealing that the depth of facial expression processing is dependent on stimulus visibility.en_US
dc.format.extent 475496 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) Cognitive, Affective, & Behavioral Neuroscience, 8, 282-292en_US
dc.title (題名) Depth of facial expression processing depends on stimulus visibility: Behavioral and electrophysiological evidence of priming effectsen_US
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.3758/CABN.8.3.282en_US
dc.doi.uri (DOI) http://dx.doi.org/10.3758/CABN.8.3.282 en_US