害羞腦電的AR模型譜分析

采用電生理測量方法，對400名在校大學(xué)生用13條目害羞量表進(jìn)行心理測驗(yàn)，篩選出害羞被試和不害羞被試共28人，分別記錄每個(gè)被試的睜閉眼自發(fā)腦電(EEG)數(shù)據(jù)。對兩組被試的EEG數(shù)據(jù)進(jìn)行AR模型譜估計(jì)，結(jié)果顯示害羞被試在顳葉電極(T8)上的β2波段(20～30 Hz)能量均值顯著低于不害羞被試，表明害羞被試在顳葉的活動(dòng)水平顯著低于不害羞被試?；谥袠猩窠?jīng)系統(tǒng)的情緒通路，探討了害羞的生理機(jī)制，說明害羞有相應(yīng)的生理基礎(chǔ)，可通過腦電分析來研究其神經(jīng)機(jī)理。
關(guān) 鍵 詞 AR模型; EEG; 害羞; 顳葉; β2波段

Abstract In this paper, electroencephalogram (EEG) data are collected respectively for shy and non-shy subjects, totally 28 individuals selected from 400 university students using the 13-item revised shyness scale. The AR model method is applied to estimate the spectrum of those EEGs data. The results show that the average energy of the beta2 band (20~30 Hz) in temporal lobe (T8) electrode for shy subjects is significant lower than that that for non-shy subjects. Based on the general emotional pathway of the central nervous system, possible neurophysiological mechanism is discussed. This primary work implies that shyness is of specific physiological basis and can be investigated by EEG.
Key words AR model; electroencephalogram; shyness; temporal lobe; β2 band