Psychophysiology Vol. 9 No. 3 (2012)
Use of Independent Component Analysis for localization of evoked activity sources in distinguishing texture modulations Localization of evoked activity sources in distinguishing texture modulations using Independent Component Analysis
Abstract
Contrast, orientation and spatial-frequency texture modulations are detected by second-order visual mechanisms. Psychophysical data gives the evidence of the second-order mechanisms selectivity (specificity) to the listed types of modulations. This selectivity can
have different cerebral localization of second-order mechanisms in it’s basis. The aim of current research was to check this assumption using psychophysiological methods. It was shown that evoked activity sources recorded in solving the task of distinguishing types of modulation are located in different cortex areas. This fact is psychophysiological evidence for second-order mechanisms specificity.
Keywords
- texture
- modulation
- evoked potentials
- Independent Component Analysis
- dipole source
How to Cite
Use of Independent Component Analysis for localization of evoked activity sources in distinguishing texture modulations Localization of evoked activity sources in distinguishing texture modulations using Independent Component Analysis. (2012). Russian Psychological Journal, 9(3), 56-64. https://doi.org/10.21702/rpj.2012.3.7