Neurocognitive Pattern Analysis of a Visuospatial Task: Rapidly-Shifting Foci of Evoked Correlations between Electrodes

摘要

Spatial patterns of correlation between pairs of electrodes in 15 channels of human scalp-recorded brain potentials were determined by applying Neurocognitive Pattern (NCP) Analysis to single-trial EEG data from 9 adults performing a visuospatial task. Spatial patterns of difference in inter-electrode correlation between 'move' and 'no-move' trials of the task increased in magnitude through four successive 175-ms wide analysis intervals. Results are consistent with a distributed network model of neurocognitive function where parallel activity in many neural areas is integrated in a rapidly shifting pattern of focal activity. Keywords: Visuospatial, Single-trial analysis, Correlation, Evoked potentials, Mathematical pattern recognition, Neurocognitive, Parallel processing, Spatial localization, and Hemispheric lateralization.