The event-related potentials study on attentional deployment in alexithymia
10.3760/cma.j.issn.1674-6554.2015.11.014
- VernacularTitle:述情障碍注意转移策略的事件相关电位研究
- Author:
Wu QING
;
Fengqiong YU
;
Daomin ZHU
;
Chunyan ZHU
;
Lei ZHANG
;
Liling GAO
;
Kai WANG
- Publication Type:Journal Article
- Keywords:
Alexithymia;
Emotion regulation;
Attentional deployment;
Event-related potentials
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2015;24(11):1012-1014
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the attentional deployment strategy of emotion regulation and its processing mechanisms in alexithymia.Methods 21 alexithymia subjects and 22 normal subjects completed attentional deployment task.The reaction time(RT) and accuracy were recorded automatically and the event-related potentials (ERPs) were recorded by neuroscan system.Results ①From the behavioral results,the differences of RT and accuracy to neutral pictures ((1840.17±204.44) ms vs (1845.17±252.97) ms;(0.859±0.073) vs (0.884±0.068)) and negative pictures ((1888.94±200.09) ms vs(1890.38±263.72) ms);(0.845±0.088) vs (0.845±0.091)) in calculation task between two groups were not statistically significant(all P＞0.05).The differences of RT and accuracy in emotion task were not statistically significant(P＞0.05).②In RT and accuracy,the task main effects were statistically significant(F(1,42) =637.40,P＜0.01;F(1,42)=15.00,P＜0.01),the emotion main effects were statistically significant (F(1,42)=30.23,P＜0.001;F(i,42)=47.87,P＜0.01),the interaction effects of task and emotion were statistically significant(F(2,41) =5.20,P＜0.05;F(2,41)=6.01,P＜0.05).③The differences between two groups in P3 amplitude induced by neutral pictures and negative pictures in calculation task were not statistically significant(P＞0.05).P3 amplitude induced by negative pictures were siguificantly greater than those induced by neutral pictures in emotion task((-0.138±0.463) μV vs (0.789±0.541) μV).Conclusion The attentional deployment can effectively regulate the negative pictures processing and occur in the late stage of the picture processing.No attentional deployment defects in alexithymia.
