Alpha rhythm parameters and short-term memory span

Author(s): Masloboev, Y. P.

Journal/Book: Int J Psychophysiol. 1997; 26: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science BV. 369-380.

Abstract: The study examined a statement from the neurophysiological model of A.N. Lebedev as to whether short-term memory span is related to a ratio of the alpha-rhythm frequency and parameters of step-type behaviour of wave processes in the EEG alpha range. Forty young healthy subjects performed a digit memory test. EEG signals were recorded from the occipital area during a resting period with eyes closed. As one of the parameters of step-type behaviour of alpha oscillations a mean value of the difference between periods of neighbouring peaks in the alpha spectra was calculated. A second parameter - the duration of alpha spindles, considered to be a superposition of alpha oscillations - was also measured. It was shown that the ratio of the alpha-rhythm frequency to parameters of the step-type behaviour of alpha oscillations positively correlated with memory performance.

Note: Article Maltseva IV, Russian Acad Sci, Inst Psychol, Yaroslavskaya 13, Moscow 129366, RUSSIA

Keyword(s): Lebedev model; short-term memory span; alpha-rhythm

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