Frontal Cortical Arousal During Working Memory Performance in Trait Anxiety
Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_RPH-5-1_003
تاریخ نمایه سازی: 19 اردیبهشت 1403
Abstract:
This study investigated the degree of cortical arousal of the forehead during working memory performance in personality dimension of anxiety. Based on Gray’s definition of personality dimension of anxiety, in a pseudo-empirical study a sample of female students (n=۷۹۳) aged from ۱۸ to ۲۸ years old completed Eysenck Personality Questionnaire and Carver and White’s Approach/Avoidance scale. ۱۵ subjects whose scores were simultaneously in the upper distribution of Neuroticism and lower distribution of Extraversion (N+E-) were selected as high trait anxiety group (Anx+), and low trait anxiety group (Anx-) consisted of ۱۵ subjects with higher scores of Extraversion and lower scores of Neuroticism (N-E+). Then their EEG was taken in baseline mode and while performing working memory task. Total scores in ۱-back working memory task were taken as the indicator of working memory performance and EEG alpha oscillation during ۱-back task was taken as cortical arousal index. Data were analyzed using T-test for independent samples. Results revealed that high trait anxious subjects showed more arousability in their right and left cortex of forehead during working memory performance, while their performance in working memory tasks was impaired in comparison with low trait anxious group. These Results supported Processing Efficiency Theory, which means although high trait anxious individuals employed higher mental effort during executive functions, their processing efficiency was impaired.
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Authors
ندا نظربلند
دانشگاه تربیت مدرس
پرویز آزاد فلاح
دانشگاه تربیت مدرس
علی فتحی آشتیانی
دانشگاه علوم پزشکی بقیه الله
حسن عشایری
دانشگاه علوم پزشکی تهران