Neda Nazarboland, Parviz Azadfallah, Ali Fathi Ashtiani, Hasan Ashayeri,
Volume 5, Issue 1 (9-2011)
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=793) aged from 18 to 28 years old completed Eysenck Personality Questionnaire and Carver and White’s Approach/Avoidance scale. 15 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 15 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 1-back working memory task were taken as the indicator of working memory performance and EEG alpha oscillation during 1-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.
Mrs Mahnoosh Kamranvand, Dr Fateme Dehghani-Arani, Dr Reza Rostami, Dr Khosro Sadeghniat, Dr Hojjatollah Farahani,
Volume 15, Issue 3 (12-2021)
Abstract
The aim of this study was to investigate the relationship between beliefs about stress and quantitative pattern of brain waves with post-traumatic growth dimensions in patients hospitalized due to Covid-19 disease. Post-traumatic growth is the mental experience of positive psychological changes caused by a person as a result of coping with challenging situations. In this study, 66 people with Covid-19 who were admitted to Baharloo Hospital in Tehran as an experience of stressful events were selected by convenience sampling and completed questionnaires beliefs about stress and post-traumatic growth and brain waves were recorded at rest. The results showed that brain components are a better predictor of post-traumatic growth components than beliefs about stress. According to the results, it can be said that more objective instruments such as EEG have good predictive power in complex psychological and multidimensional cases such as post-traumatic growth.
