Accession Number : ADP005633

Title :   Workload Methodology,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF PSYCHOLOGY

Personal Author(s) : Donchin, Emanuel ; Wickens, Christopher D.

Report Date : JUN 1987

Pagination or Media Count : 2

Abstract : The goal of our proposed technique is to employ two converging methodologies to track the workload changes during the ILS approach to landing. The two methodologies-based upon the Event-Related Brain potential (ERP) and the Sternberg Memory Search task will provide information that is both sensitive, detecting variations in resource demand when they occur, and diagnostic, localizing these changes within the multi-dimensional space underlying human processing resources. Each of these techniques will be briefly described. The Event-Related Brain Potential is a transient series of voltage oscillations in the brain that can be recorded from the scalp in response to the occurrence of a discrete event. These oscillations can be characterized by a number of components which in turn may be identified by their polarity and typical latency value following the event. In a series of previous investigations we have shown that the amplitude of the P300 component of the ERP can serve as a reliable unobtrusive index of the perceptual/cognitive load imposed by a primary task, but is insensitive to the demands associated with the selection and execution of overt responses. In this sense the measure is diagnostic. It has also proven to be unobtrusive in the sense that it interferes little with performance of the primary task.

Descriptors :   *MEMORY(PSYCHOLOGY), *PERCEPTION(PSYCHOLOGY), COGNITION, BRAIN, TRACKING, WORKLOAD, PERFORMANCE(HUMAN), PILOTS, APPROACH, PSYCHOPHYSIOLOGY, AMPLITUDE.

Subject Categories : Psychology
      Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE