 |
|
Pseudostereoscopic Illusion Caused by Interhemispheric Temporal DisparityClinical and Experimental Observations
Moshe Feinsod, MD;
Shlomo Bentin, MSc;
William F. Hoyt, MD
Arch Neurol. 1979;36(11):666-668.
Abstract
• An extension of Pulfrich's pseudostereoscopic illusion to a situation without interocular disparity, ie, even under purely monocular circumstances, was clinically observed and experimentally produced. The perceived distortion of the movement of a swinging pendulum was found to depend on different combinations of interhemispheric disparity induced by selective prolongation of the conduction time from the nasal or temporal retina to the corresponding hemisphere. In patients, tumor pressure caused the slower conduction time. In normal subjects, neutral density filters covering different visual fields produced similar conduction delays under experimental conditions. Recording the visually evoked response from over each hemisphere provided an objective tool for demonstration and measurement of interhemispheric differences of retinocortical conduction times in various clinical and experimental setups.
Author Affiliations
From the Aranne Laboratory for Human Psychophysiology and Neurobehavioral Studies (Mr Bentin), Department of Neurosurgery (Dr Feinsod) Hadassah University Hospital, Jerusalem, and the Department of Neurological Surgery, University of California Medical Center, San Francisco (Dr Hoyt).
Footnotes
Accepted for publication Jan 22, 1979.
Reprint requests to Neuro-Ophthalmology Unit, 782 M, University of California San Francisco, San Francisco, CA 94143 (Dr Hoyt).
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter
What's this?
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES
The lazy shadow: a monocular counterpart to the Pulfrich stereo phenomenon
Frisen
Br J Ophthalmol 2007;91:1296-1298.
ABSTRACT
| FULL TEXT
|
