Volberg, Gregor (2014) Right-Hemisphere Specialization for Contour Grouping. EXPERIMENTAL PSYCHOLOGY, 61 (5). pp. 331-339. ISSN 1618-3169, 2190-5142
Full text not available from this repository. (Request a copy)Abstract
Previous studies often revealed a right-hemisphere specialization for processing the global level of compound visual stimuli. Here we explore whether a similar specialization exists for the detection of intersected contours defined by a chain of local elements. Subjects were presented with arrays of randomly oriented Gabor patches that could contain a global path of collinearly arranged elements in the left or in the right visual hemifield. As expected, the detection accuracy was higher for contours presented to the left visual field/right hemisphere. This difference was absent in two control conditions where the smoothness of the contour was decreased. The results demonstrate that the contour detection, often considered to be driven by lateral coactivation in primary visual cortex, relies on higher-level visual representations that differ between the hemispheres. Furthermore, because contour and non-contour stimuli had the same spatial frequency spectra, the results challenge the view that the right-hemisphere advantage in global processing depends on a specialization for processing low spatial frequencies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LOCAL PROCESSING EVIDENCE; HUMAN VISUAL-SYSTEM; ATTENTIONAL SELECTION; SPATIAL-FREQUENCY; GLOBAL PRECEDENCE; INTEGRATION; ASYMMETRIES; STIMULUS; ORGANIZATION; PERCEPTION; contour; global; local; spatial frequency; hemispheric difference |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Psychology and Pedagogy > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Nov 2019 14:24 |
| Last Modified: | 28 Nov 2019 14:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10904 |
Actions (login required)
 |
View Item |
