A flanker effect for moving visual stimuli
| Autor: | Stefan Treue, Bettina Lange-Malecki |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Adult
Male Visual perception genetic structures media_common.quotation_subject Motion Perception Random dot pattern Stimulus (physiology) Flanker effect Choice Behavior behavioral disciplines and activities 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Perception Reaction Time Humans Visual motion perception Attention 0501 psychology and cognitive sciences Static stimuli Automatic attention media_common Communication business.industry 05 social sciences Visual motion Voluntary attention Sensory Systems Ophthalmology Female business Psychology Photic Stimulation psychological phenomena and processes 030217 neurology & neurosurgery Eriksen flanker task Cognitive psychology |
| Zdroj: | Vision Research. 62:134-138 |
| ISSN: | 0042-6989 |
| Popis: | Visual motion perception is essential for appropriate behavior in a dynamic visual world. It is influenced by voluntary attention towards or away from moving objects as well as by the capture of automatic attention by salient stimuli. Both kinds of attention play a major role in the Eriksen Flanker Task (EFT), where a central stimulus has to be identified in the presence of flanking distractors. For static visual stimuli incongruent peripheral flankers are known to reduce accuracy rates and prolong reaction times. However, it is not known if a similar flanker effect also affects speeded responses to moving stimuli. We therefore examined whether a flanker effect exists for moving random dot patterns (RDPs) and compared it to the effect elicited by static visual triangles in human subjects. We observed a motion flanker effect, both for response times and accuracy rates. Incongruently moving peripheral flankers caused a slowing of response time and a reduction of accuracy rates compared to congruently moving RDPs. These motion flanker effects were not significantly different from those in the static flanker task. The presence of a motion flanker effect and its similarity to the flanker effect for static stimuli suggests that visual motion engages competitive attention and control mechanisms for perception and decision-making similar to those engaged by non-moving features. |
| Databáze: | OpenAIRE |
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