Average Evoked Potentials and Reaction times to Visual Stimuli
Human reaction time, Central factors, Cortical activity
Digital Object Identifier (DOI)
Average evoked potentials to brief light flashes were recorded from occipital, vertex, temporal and orbital leads in ten subjects during a reaction time study. Subjects performed under two conditions, with and without knowledge of results.
The amplitude of the average evoked potentials was related to reaction time. For any given sequence of reaction times, faster reactions were associated with larger amplitude average evoked potentials. Knowledge of results shortened reaction times and increased the magnitude of average evoked potentials.
The diffuse and non-specific character of the main component of the average evoked potential appears to reflect changes in cortical excitability associated with the variability of reaction time. This result has been interpreted in relation to the non-specific arousal and alerting mechanism.
Was this content written or created while at USF?
Citation / Publisher Attribution
Electroencephalography and clinical neurophysiology, v. 20, issue 3, p. 217-223
Scholar Commons Citation
Donchin, Emanuel and Lindsley, Donald B., "Average Evoked Potentials and Reaction times to Visual Stimuli" (1966). Psychology Faculty Publications. 174.