A Psychophysiological Mapping of Cognitive Processes.
Annual rept. no. 2, 1 Mar 84-28 Feb 85,
WASHINGTON UNIV ST LOUIS MO BEHAVIOR RESEARCH LAB
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The experiment was concerned with the effects of varied cognitive and perceptual i.e., monitoring demands on patterns of physiological responding. Cognitive demands were varied by manipulating the number of letters 1, 3, or 5 comprising a briefly-presented set which the subject was instructed to encode, rehearse, and, 5 sec later, compare to a single test letter. Perceptual demands were varied by presenting the subject with a cue stimulus 5 sec prior to the set, informing him of the number of letters contained therein. Several physiological measures were recorded, including HR, EOG and probe evoked potentials sampled from the intervals preceding and following the letter set, and task evoked potentials and blinks elicited by the cue, letter set, and test stimuli. Performance data, i.e., RT and error rates, were also recorded.
- Anatomy and Physiology