ERPs predict the appearance of visual stimuli in a temporal selection task.

G. Hesselmann, M. Niedeggen, Arash Sahraie, Maarten Valentijn Milders

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In contrast to the visual spatial domain, the effect of attention on sensory processing and stimulus appearance in temporal selection tasks is still controversial. Using a rapid serial visual presentation (RSVP) procedure, we examined whether the stimulus onset asynchrony (SOA) between a color cue and a motion target affects the appearance of the latter. Event-related brain potentials (ERPs) recorded simultaneously allowed us to test whether a change in the targets' appearance is associated with a modulation of the sensory ERP components. In the experimental condition 'SOA', the temporal interval between the cue and the target was varied between 0 and 300 ms. In a control condition, the physical appearance of the motion target was varied (level of coherence: 25-100%) while holding the cue-target SOA constant (300 ms). In trials when the participant detected the target motion, his/her task was to report the strength of the perceived motion on a 5-point scale. In both conditions, the mean rating of the target's appearance increased monotonically with increasing SOA and the level of coherence, respectively. The psychophysical ratings were associated with an increase of a negative deflection about 200 ins (N200) related to the sensory processing of visual motion. The physical variation of motion coherence and the variation of the cuetarget SOA affected the N200 response in similar fashion. These results indicate that sensory processing is also modulated by attentional resources in temporal selection tasks which - in turn - affect the appearance of the relevant target stimulus. (c) 2006 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)205-215
Number of pages10
JournalBrain Research
Volume1097
Issue number1
DOIs
Publication statusPublished - 2006

Keywords

  • visual motion
  • attention
  • stimulus appearance
  • psychophysics
  • ERPs
  • INDUCED MOTION BLINDNESS
  • ATTENTIONAL BLINK
  • PERCEPTUAL DECISION
  • EVOKED-POTENTIALS
  • BRAIN POTENTIALS
  • SERIAL
  • MECHANISMS
  • CONTRAST
  • SEARCH
  • FIELD

Cite this

ERPs predict the appearance of visual stimuli in a temporal selection task. / Hesselmann, G.; Niedeggen, M.; Sahraie, Arash; Milders, Maarten Valentijn.

In: Brain Research, Vol. 1097, No. 1, 2006, p. 205-215.

Research output: Contribution to journalArticle

Hesselmann, G. ; Niedeggen, M. ; Sahraie, Arash ; Milders, Maarten Valentijn. / ERPs predict the appearance of visual stimuli in a temporal selection task. In: Brain Research. 2006 ; Vol. 1097, No. 1. pp. 205-215.
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