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Brain dynamic mechanisms of scale effect in visual spatial attention
- Source :
- Neuroreport. 17(15)
- Publication Year :
- 2006
-
Abstract
- The dynamic mechanisms of the early event-related potential scale effect of different attentive regions in the brain was studied. The paradigm of this experiment is the precue-target visual search paradigm by event-related potential technique. The results showed that the reaction time was shortened with the reduction of cue scale, a cue to how big the search area would be, and fixed target stimulus, while the amplitudes of P1 and N1 components of event-related potentials increased. These results not only provided the electrophysiological evidences that supported the zoom-lens theory, but also indicated that the zoom-lens effect happened at the early selected attention period. The results also showed that there existed two kinds of separation in the P2 effect.
- Subjects :
- Visual search
Adult
Male
Analysis of Variance
Brain Mapping
General Neuroscience
Visual Physiology
Brain
Electroencephalography
Visual spatial attention
Stimulus (physiology)
Brain mapping
Functional Laterality
Electrophysiology
Pattern Recognition, Visual
Event-related potential
Humans
Attention
Female
Cues
Psychology
Neuroscience
Scale effect
Evoked Potentials
Photic Stimulation
Subjects
Details
- ISSN :
- 09594965
- Volume :
- 17
- Issue :
- 15
- Database :
- OpenAIRE
- Journal :
- Neuroreport
- Accession number :
- edsair.doi.dedup.....b944af6650e02fb871cce444fb29b1dc