Accession Number:

ADA455756

Title:

Functionally Independent Components of the Late Positive Event-Related Potential During Visual Spatial Attention

Descriptive Note:

Corporate Author:

NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Report Date:

1999-01-21

Pagination or Media Count:

18.0

Abstract:

Human event-related potentials ERPs were recorded from 10 subjects presented with visual target and nontarget stimuli at five screen locations and responding to targets presented at one of the locations. The late positive response complexes of 25-75 ERP average waveforms from the two task conditions were simultaneously analyzed with independent Component Analysis, a new computational method for blindly separating linearly mixed signals. Three spatially fixed, temporarily independent, behaviorally relevant, and physiologically plausible components were identified without reference to peeks in single-channel waveforms.

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE