Selectivity for polar, hyperbolic, and Cartesian gratings in macaque visual cortex
Abstract
The neural basis of pattern recognition is a central problem in visual neuroscience. Responses of single cells were recorded in area V4 of macaque monkey to three classes of periodic stimuli that are based on spatial derivative operators: polar (concentric and radial), hyperbolic, and conventional sinusoidal (Cartesian) gratings. Of 118 cells tested, 16 percent responded significantly more to polar or hyperbolic (non-Cartesian) gratings than to Cartesian gratings and only 8 percent showed a significant preference for Cartesian gratings. Among cells selective for non-Cartesian gratings, those that preferred concentric gratings were most common. Cells selective for non-Cartesian gratings may constitute an important intermediate stage in pattern recognition and the representation of surface shape.
Additional Information
© 1993 American Association for the Advancement of Science. Received 25 August 1992; accepted 6 November 1992. Supported by National Institutes of Health grants EY02091 and T32NS07251 and by Office of Naval Research grant N00014-89-J1192. We thank W. Press, B. Olshausen, E. Connor, T. Coogan, C. H. Anderson, and B. Julesz for comments and suggestions.Additional details
- Eprint ID
- 52816
- DOI
- 10.1126/science.8418487
- Resolver ID
- CaltechAUTHORS:20141215-123629216
- NIH
- EY02091
- NIH Predoctoral Fellowship
- T32NS07251
- Office of Naval Research (ONR)
- N00014-89-J1192
- Created
-
2014-12-15Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field