How personal earthquake experience impacts on the Stroop interference effect: an event-related potential study.
Event-related brain potentials (ERPs) were measured when 24 Chinese subjects performed the classical Stroop task. All of subjects had experienced the great Sichuan earthquake (5/12), with 12 people in each of the Far (Chengdu city) and the Close (Deyang city) earthquake experience groups. The behavioral data showed that the Stroop task yielded a robust Stroop interference effect as indexed by longer RT for incongruent than congruent color words in both the Chengdu and Deyang groups. Scalp ERP data showed that incongruent stimuli elicited a more negative ERP deflection (N400-600; Stroop interference effect) than did congruent stimuli between 400-600 ms in the Chengdu group, while the Stroop interference ERP effect was not found in the Deyang group. Dipole source analysis localized the generator of the N400-600 in the right prefrontal cortex (PFC) and was possibly related to conflict monitoring and cognitive control.
Qiu
Jiang
J
Key Laboratory of Cognition and Personality (SWU), Ministry of Education, Chongqing, China. qiuj318@swu.edu.cn
Su
Yanhua
Y
Li
Hong
H
Wei
Dongtao
D
Tu
Shen
S
Zhang
Qinglin
Q
D000328:Adult; D002540:Cerebral Cortex / Q000503:physiopathology; D002681:China; D003627:Data Interpretation, Statistical; D004190:Disasters; D055866:Earthquakes; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000502:physiology; D013313:Stress Disorders, Post-Traumatic / Q000503:physiopathology / Q000523:psychology; D057190:Stroop Test; D055815:Young Adult