Event-related potentials reflecting sequential information processing during a mental arithmetic task.
The sequence of brain activities was identified with respect to the behavioral output indicated by the reaction time. The early portion of ERPs suggests two automatic processes irrespective of the adding task; one is identification of physical attributes of digits and patterns and the other is recognition of the numeric meaning specific to digits. The elicitation of the subsequent positive slow potential depends on the adding task, suggesting mental processes associated with calculation and memorizing the result of the sum. These stages of information processing concatenate sequentially during the time course of performing the adding task.
Iguchi
Y
Y
Department of Psychophysiology, Tokyo Institute of Psychiatry, Japan.
Hashimoto
I
I
D000328:Adult; D001931:Brain Mapping; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D006801:Humans; D008433:Mathematics; D008606:Mental Processes / Q000502:physiology*; D010507:Periodicity; D011340:Problem Solving / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology