Performance of concurrent tasks: a psychophysiological analysis of the reciprocity of information-processing resources

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Science  09 Sep 1983:
Vol. 221, Issue 4615, pp. 1080-1082
DOI: 10.1126/science.6879207


The resources allocated to a primary and secondary task are reciprocal. Subjects performed a tracking task in which the discrete displacements of the tracking cursor could be used to elicit event-related brain potentials. As the resource demands of the tracking task were increased, potentials elicited by the task-defined events increased in amplitude, whereas those elicited by secondary task auditory stimuli decreased.

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