title: Evoked potential correlates of expected stimulus intensity.
abstract: The electrophysiological responses to a flash of medium intensity have different wave shapes in trials in which the occurrence of bright stimuli or dim stimuli is expected. When a bright or dim stimulus is signaled, the potentials evoked by the medium stimulus resemble the responses evoked by a real bright or dim flash.
mesh_terms: D004569:Electroencephalography; D005071:Evoked Potentials; D006801:Humans; D010775:Photic Stimulation; D014793:Visual Cortex / Q000502:physiology*