The Use of Electrocortical Activity to Monitor Human Decision Making
Final rept. 29 Jun 1973-29 Jun 1975
ILLINOIS UNIV AT URBANA DEPT OF PSYCHOLOGY
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Research in laboratories have demonstrated that cognitive events can be inferred from cortical potentials which can be recorded through the scalp of intact, awake human subjects. Specific components of these event related potentials ERPs have been shown to be manifestations of such cognitive events as the preparation to perform a response, the preparation to intake and process information, the registration of a surprising event, or the processing of task relevant information. The authors have developed the use of principal component analysis for the dissociation of the ERP components. Using this technique the authors have been able to greatly refine the resolution with which one can dissect the ERP into cognitively relevant components. At the same time it has been shown that stepwise discriminant analysis can be used to detect and identify the brain responses without requiring the averaging of multiple responses.
- Anatomy and Physiology