Drawing and the cerebral hemispheres: bilateral EEG alpha.
Bilateral EEG alpha (alpha) was measured during several cognitive tasks in two experiments. EEG alpha was suppressed relative to baseline in both hemispheres during every drawing and writing task. In addition, there were task-related EEG alpha asymmetries. Differences in left-hemisphere, but not right-hemisphere EEG alpha activity, were responsible for EEG alpha asymmetry differences between writing and drawing tasks. There was no difference in bilateral EEG alpha during drawing an upright versus an inverted drawing stimulus; failing to support Edward's (1977, 1979) 'cognitive shift' approach to drawing instruction.
D000293:Adolescent; D000328:Adult; D001154:Art; D002540:Cerebral Cortex / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology*; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology; D009949:Orientation / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D013028:Space Perception / Q000502:physiology