Localization of word and face recognition memory using topographical EEG

Author(s): Gruzelier, J. H.

Journal/Book: Psychophysiology. 1997; 34: 1010 Vermont Ave NW, Suite 1100, Washington, DC 20005. Soc Psychophysiol Res. 7-16.

Abstract: The aim of this study was to explore the ability of epoch-averaged electroencephalogram (EEG) to localize cognitive functions. The EEG was recorded in healthy individuals performing a task where, on the basis of evidence from other functional brain imaging techniques, there was a high expectation of where functional changes would be expected. Topographical EEG was recorded while individuals performed recognition memory tasks for words and faces. Comparison of the acquisition and recognition phases of the experiment showed significant attenuation of alpha, beta1, and beta2 in the right temporoparietal region for the faces but no significant changes for words. Left temporoparietal changes for the word task were only seen among the women. The results confirmed the validity of EEG for use in the localization of cognitive function for faces for men and women but in the case of words for the women only.

Note: Article Burgess AP, Chelsea & Westminster Hosp, Mental Hlth Ctr, Charing Cross & Westminster Hosp, Psychol Med Unit, London SW10 9TH, ENGLAND

Keyword(s): brain mapping; cognitive processes; EEG; memory; EVENT-RELATED POTENTIALS; HUMAN HIPPOCAMPAL-FORMATION; DESYNCHRONIZATION ERD PATTERNS; HIGH-RESOLUTION EEG; SEX-DIFFERENCES; BRAIN POTENTIALS; VERBAL MEMORY; COGNITIVE TASKS; REPETITION; SYSTEM

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