Citation

Hartwell RC, Cowan JD. Vision Res. 1993; 33(10): 1325-1337.

Affiliation

Department of Neurosurgery, University of Pennsylvania School of Medicine, Philadelphia 19104.

Copyright

(Copyright © 1993, Elsevier Publishing)

DOI

unavailable

PMID

8333156

Abstract

Spatially localized, contrast modulated visual stimuli evoke a monophasic, inion negative scalp potential (VEP) which can be recorded simultaneously with motor responses in simple reaction time experiments. VEP response time and median motor response latency are linearly related over a wide range of stimuli. We interpret our results to suggest that VEPs and motor response latencies arise from a common sensory system with different thresholds for detection and reaction. A model is introduced to predict detection thresholds from VEP response times which are usually more robust measures than VEP amplitudes.

Language: en