Back
Extraversion and short-term memory for chromatic stimuli: an event-related potential analysis.
Journal article

Extraversion and short-term memory for chromatic stimuli: an event-related potential analysis.

  • 2012-08-09
Published in:
  • International journal of psychophysiology : official journal of the International Organization of Psychophysiology. - 2012
Adolescent
Adult
Color
Electroencephalography
Evoked Potentials
Extraversion, Psychological
Female
Humans
Introversion, Psychological
Memory, Short-Term
Personality Tests
Photic Stimulation
Psychomotor Performance
Reaction Time
Visual Perception
Young Adult
English The present study investigated extraversion-related individual differences in visual short-term memory (VSTM) functioning. Event related potentials were recorded from 50 introverts and 50 extraverts while they performed a VSTM task based on a color-change detection paradigm with three different set sizes. Although introverts and extraverts showed almost identical hit rates and reaction times, introverts displayed larger N1 amplitudes than extraverts independent of color change or set size. Extraverts also showed larger P3 amplitudes compared to introverts when there was a color change, whereas no extraversion-related difference in P3 amplitude was found in the no-change condition. Our findings provided the first experimental evidence that introverts' greater reactivity to punctuate physical stimulation, as indicated by larger N1 amplitude, also holds for complex visual stimulus patterns. Furthermore, P3 amplitude in the change condition was larger for extraverts than introverts suggesting higher sensitivity to context change. Finally, there were no extraversion-related differences in P3 amplitude dependent on set size. This latter finding does not support the resource allocation explanation as a source of differences between introverts and extraverts.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/138795
Statistics
Document views: 32 File downloads: