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  • Title: Is the relationship between frontal EEG alpha asymmetry and depression mediated by implicit or explicit self-esteem?
    Author: De Raedt R, Franck E, Fannes K, Verstraeten E.
    Journal: Biol Psychol; 2008 Jan; 77(1):89-92. PubMed ID: 17689172.
    Abstract:
    A robust physiological finding is a higher relative left sided activity in the prefrontal cortex during the experience of positive approach related emotions and a higher relative right sided activity during the experience of negative withdrawal related emotions. Since self-esteem can be conceptualized within a framework of approach/withdrawal tendencies, the present study aimed at investigating if the relation between frontal EEG alpha asymmetry and depressive symptoms is mediated by implicit or explicit self-esteem. Self-esteem was measured by questionnaires (explicit) and in an indirect way (implicit). The mediation analyses showed that only explicit self-esteem acted as a partial mediator in the path from EEG alpha asymmetry to depression.
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