Sensory ERPs predict differences in working memory span and fluid intelligence

Carrie R. Brumback, Kathy A. Low, Gabriele Gratton, Monica Fabiani

Research output: Contribution to journalArticlepeer-review

Abstract

The way our brain reacts to sensory stimulation may provide important clues about higher-level cognitive function and its operation. Here we show that short-latency (< 200ms) sensory cortical responses elicited by visual and auditory stimuli differ dramatically between subjects with high and low working-memory span, as well as between subjects scoring high and low on a fluid intelligence test. Our findings also suggest that this link between sensory responses and complex cognitive tasks is modality specific (visual sensory measures correlate with visuo-spatial tasks whereas auditory sensory measures correlate with verbal tasks). We interpret these findings as indicating that people's effectiveness in controlling attention and gating sensory information is a critical determinant of individual differences in complex cognitive abilities.

Original languageEnglish (US)
Pages (from-to)373-376
Number of pages4
JournalNeuroreport
Volume15
Issue number2
DOIs
StatePublished - Feb 9 2004

Keywords

  • Controlled attention
  • Event-related brain potentials (ERPs)
  • Individual differences
  • Working memory capacity

ASJC Scopus subject areas

  • Neuroscience(all)

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