Multivariate Analysis of Evoked Potentials and Semantic Meaning

Abstract

The research provides confirmation that Evoked Potentials contain information about the semantic meaning of word stimuli used to obtain them and that combinations of Evoked Potential components can identify the unknown semantic character of stimuli. Previous results involving the use of relatively pure semantic stimuli have been successfully extended to words which are semantically more complex. The detection of numerical information by means of Evoked Potentials was explored, and tentatively confirmed, by analyzing the responses to visual number symbols and a 'think' cue (=). For both semantic and numerical meanings, the discriminant functions developed for a group of subjects worked equally well for each individual. An Evoked Potential component with a post-stimulus peak about 250 msec. was found to be related to storage of information in short-term memory. In a behavioral experiment which probed short- term memory, recall was predicted by the magnitude of the Storage Component.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1978
Accession Number
ADA063192

Entities

People

  • Robert M. Chapman

Organizations

  • University of Rochester

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Brain
  • Data Science
  • Databases
  • Detection
  • Discriminant Analysis
  • Factor Analysis
  • Frequency
  • Information Processing
  • Information Science
  • Judgment
  • Language
  • Physical Properties
  • Psychology
  • Recording Systems
  • Statistical Analysis
  • Three Dimensional

Fields of Study

  • Psychology

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Regression Analysis.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.