Neuroelectric Predictors of Performance Accuracy.
Abstract
Brain electrical patterns of seven right-handed adults were found to be different preceding accurate and inaccurate performance. Activity overlying the left frontal cortex and the motor and parietal corteces contralaterial to the performing hand characterized subsequently accurate left- or right-hand performance. Additionally, strong activity overlying supplementary motor and premotor corteces preceded left-hand performance. Group patterns significantly distinguished subsequently accurate or inaccurate performance by individuals. These measurements suggest that brief, spatially distributed neural activityh patterns, or 'preparatory sets', recorded from distinct cognitive, somesthetic-motor, and integrative motor areas of the human brain may be essential precursors of accurate visumotor performance. These precursors of performance accuracy were not present in even highlyh enhanced conventional averaged evoked potentials. Our findings suggest that important functional relations between areas of the human brain may be characterized by measuriing the similarity of wave shape and timing between appropriately preprocessed low-frequency brain waves recorded from different channels at the scalp.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1986
- Accession Number
- ADA174575
Entities
People
- Alan S. Gevins