Abstract
The resting EEG of 29 Ss is examined during exposure to five different conditions of visual stimulation: (1) eyes shut, (2) eyes open in the dark, (3) viewing a blank screen, (4) viewing a simple pattern, and (5) viewing a more complex pattern. Each condition is presented twice according to a random schedule (2 min per trial). For alpha and beta frequencies, EEG amplitude varies inversely with ascending visual complexity. For theta frequencies, this relation holds except for a reversal for Conditions 4 and 5.
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References
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This work was partially supported by a grant from the Medical Research Council (Ref. G. 969/185/C).
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Gale, A., Coles, M. & Boyd, E. Variation in visual input and the occipital EEG: II. Psychon Sci 23, 99–100 (1971). https://doi.org/10.3758/BF03336026
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DOI: https://doi.org/10.3758/BF03336026