6533b85efe1ef96bd12bfe56
RESEARCH PRODUCT
Distraction effects in vision: behavioral and event-related potential indices.
Stefan BertiErich Schrögersubject
AdultMalemedicine.medical_specialtyBehaviorGeneral NeuroscienceElectroencephalographyStimulus (physiology)AudiologyNeuropsychological TestsDevelopmental psychologyElectrophysiologyEvent-related potentialDistractionmedicineReaction TimeVisual PerceptionHumansAttentionFemalesense organsPsychologyEvoked PotentialsChange detectionPhotic Stimulationdescription
Evidence is presented which shows that slight changes in serially presented visual input can be detected automatically and may result in behavioral distraction. In two experiments, reaction times on a two-alternative, forced-choice duration discrimination task were prolonged in trials where a task-irrelevant change in the location of the stimulus occurred. The P1 and N1 components of the event-related potential were enhanced in such trials. However, electrophysiological and behavioral effects were not affected when the duration discrimination was made more difficult and the N1 amplitude increase and RT prolongation were confined to situations where task-irrelevant location changes were infrequent. Thus, these effects most probably reflect pre-attentive change detection and subsequent distraction in vision, whereas the P1 effect is probably due to spatial eccentricity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-04-20 | Neuroreport |