Localisation of auditory evoked potentials in man during awakeness and sleep.
Auditory evoked potentials after click, speech and musical stimulation during sleep and awakeness were used in order to determine the existence of a topographical dominance of single cortical areas. The results showed a lateralization in awake subjects dependent on the semantic content of the stimulus. During deep sleep the lateralization of the potential was absent and the activity was extremely symmetrically concentrated around the vertex. The findings support the concept of cerebral dominances which has to be more than a pure metaphorical one.
David
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E
Institute for Physiology, University of Witten/Herdecke, Beckweg 4.
Pfotenhauer
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M
Birken
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E
David
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L
D000161:Acoustic Stimulation; D001303:Auditory Cortex / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D006801:Humans; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*