EEG changes after 1, 4, and 7 days of sensory deprivation: A cross-sectional approach

Abstract Three groups of Ss, exposed to 1, 4, or 7 days of sensory deprivation (darkness and silence), all showed a significant post-isolation decrease in occipital alpha frequency. However, no indication of a progressive decrease in mean alpha frequency as a function of increasing duration of senso...
Ausführliche Beschreibung

Abstract Three groups of Ss, exposed to 1, 4, or 7 days of sensory deprivation (darkness and silence), all showed a significant post-isolation decrease in occipital alpha frequency. However, no indication of a progressive decrease in mean alpha frequency as a function of increasing duration of sensory deprivation was obtained, a finding contrary to that reported in several earlier studies employing a longitudinal approach. After each of the three durations, the magnitude of the post-isolation decrease was approximately 1 Hz. It was concluded that a different temporal pattern of EEG changes mar occur, depending on whether a cross-sectional or longitudinal test procedure is employed, a finding of considerable importance for future research in the area of sensory and perceptual deprivation. Ausführliche Beschreibung