"Memory-scanning" event-related potentials. Correlations with verbal and performance scores.
Auditory and visual event-related potentials (ERPs) to a digit probe identification task in a modified Sternberg paradigm have been compared with psychological tests of verbal and performance ability (WAIS) in 19 healthy subjects. We have found a significant correlation between ERP amplitude and test scores. The higher the scores the "more negative" the responses. Correlations were stimulus-modality dependent. Auditory and visual ERPs were strongly correlated with "verbal" and "performance" IQ, respectively. The characteristics of these IQ-dependent electrophysiological features suggest that they may be related to the ability to allocate attention.
Pelosi
L
L
Fondazione Clinica del Lavoro, Centro Medico Di Campoli, Italy.
Blumhardt
L D
LD
D000328:Adult; D005072:Evoked Potentials, Auditory; D005074:Evoked Potentials, Visual; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D011581:Psychological Tests; D011930:Reaction Time