HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Felton, T. B. Articles by Smith, R. A. Search for Related Content PubMed PubMed Citation Articles by Felton, T. B. Articles by Smith, R. A., Jr

1. Adaptation to a high-contrast sine-wave grating has been shown previously by Blakemore & Campbell (1969) to raise the modulation required to detect a low-contrast grating that has the same or similar spatial frequency as the adapting grating.

2. A similar adaptation effect occurs when the adaptation and test gratings are seen binocularly and are presented off the plane of fixation. When the gratings are not located on the plane of fixation, however, the greatest rise in threshold following adaptation occurs for test gratings presented in the same plane as the adapting grating. Thus, the neural mechanisms adapted to the high contrast patterns must be processing disparity information.

3. The spatial frequency response of the disparity adaptation effect has been measured by adapting to gratings of different spatial frequencies presented at a given disparity, and comparing threshold elevations for identical test gratings presented in the same (disparate) plane as the adapting grating or in the plane of fixation.

4. The unbiased adaptation effect specific to disparity is greatest for gratings whose periods are twice the disparity.

5. There is no adaptation effect specific to disparity for individuals possessing only convergent or only divergent disparity mechanisms.

6. The results suggest that disparity mechanisms make bar by bar correlations as opposed to edge by edge correlations and that narrow bar detectors feed small disparity mechanisms whereas wide bar detectors feed large disparity mechanisms.

This article has been cited by other articles:

				B. Zhang, K. Matsuura, T. Mori, J. M. Wensveen, R. S. Harwerth, E. L. Smith III, and Y. Chino Binocular Deficits Associated With Early Alternating Monocular Defocus. II. Neurophysiological Observations J Neurophysiol, November 1, 2003; 90(5): 3012 - 3023. [Abstract] [Full Text] [PDF]

				A. Anzai, I. Ohzawa, and R. D. Freeman Neural Mechanisms for Encoding Binocular Disparity: Receptive Field Position Versus Phase J Neurophysiol, August 1, 1999; 82(2): 874 - 890. [Abstract] [Full Text] [PDF]

				A. Anzai, I. Ohzawa, and R. D. Freeman Neural Mechanisms for Processing Binocular Information II. Complex Cells J Neurophysiol, August 1, 1999; 82(2): 909 - 924. [Abstract] [Full Text] [PDF]

				A. Anzai, I. Ohzawa, and R. D. Freeman Neural mechanisms underlying binocular fusion and stereopsis: Position vs. phase PNAS, May 13, 1997; 94(10): 5438 - 5443. [Abstract] [Full Text] [PDF]