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Visual evoked potential changes related to illusory perception in normal human subjects
- Source :
- Neuroscience Letters. 359:29-32
- Publication Year :
- 2004
- Publisher :
- Elsevier BV, 2004.
-
Abstract
- To study the human brain activity correlated with illusory perception, we chose a physically flat plane figure which looks like a convex figure. We studied visual evoked potential (VEP) changes, which reflect perceptual properties of illusory perception. We defined two paradigms, an illusory paradigm (IP) and a control paradigm (CP). Two stimuli, A and B, were randomly presented in the IP, while stimuli C and D were randomly presented in the CP. Stimulus A was the only figure which looked like a convex figure. A three-way analysis of variance was applied to the VEP components in each paradigm, with three factors: figures, electrodes, and sessions. Different configuration patterns between the two paradigms explained different grand mean VEP waveforms between the two paradigms; a greater N1 for the CP, a greater P1 for the IP, and marked attenuation of the N3 and P3 components for the IP. Significant main effects of figures only for the IP were found on P1 and P1N2 amplitude and P2 latency, which are assumed to reflect perceptual properties of stereoscopical illusory perception.
- Subjects :
- Adult
Male
Analysis of Variance
General Neuroscience
media_common.quotation_subject
Convex figure
Visual evoked potentials
Stimulus (physiology)
Illusions
Grand mean
Electrophysiology
Perception
Visual Perception
Evoked Potentials, Visual
Humans
Female
Evoked potential
Psychology
Photic Stimulation
Plane figure
media_common
Cognitive psychology
Subjects
Details
- ISSN :
- 03043940
- Volume :
- 359
- Database :
- OpenAIRE
- Journal :
- Neuroscience Letters
- Accession number :
- edsair.doi.dedup.....780635ddc80b41040a866aabd3b9ff60