SOME OBSERVATIONS AND MEASUREMENTS OF THE PANUM PHENOMENON.
ARMY MEDICAL RESEARCH LAB FORT KNOX KY
Pagination or Media Count:
The angular separation between the binocular and the monocular line of Panums limiting case was systematically varied under conditions in which the changes in seen relative depth could be quantified. Stereoscopic, equidistant, and anomalous depth localizations were seen. A criterion of variability of depth localization was utilized to differentiate the mechansim operative in determining the seen depth. When stereopsis is clearly present, depth in Panums limiting case is predictable and reveals a one-to-one relationship with the angle of lateral separation of the stereoscopic stimuli, i.e., the odd line cooperates in free binocular vision with both of the paired lines to give true stereoscopic depth. The range of angular separation over which Panums limiting case will give rise to stereoscopic depth is increased by free eye movements well beyond the usually reported limits of Panums retinal areas. Author
- Anatomy and Physiology