Accession Number : AD0652705

Title :   SOME OBSERVATIONS AND MEASUREMENTS OF THE PULFRICH PHENOMENON.

Descriptive Note : Interim rept.,

Corporate Author : ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Personal Author(s) : Harker,George S. ; O'Neal,Orvil L. , Jr

Report Date : 09 MAY 1967

Pagination or Media Count : 16

Abstract : The Pulfrich pendulum was evaluated as a potential screening device for the detection of anomalies of binocular vision. For this purpose, a booth was set up at the Kentucky State Fair (1964) and the general public invited to observe the pendulum and record their responses with the equipment provided. The obtained results indicate that a clear dichotomy can be achieved between those who have binocular vision and those who do not. However, gradations of binocular vision from poor to good cannot be achieved with the pendulum as presently understood. Contrary to explanatory theory the characteristic seen shape of the seen pendulum path was asymmetrical following the rule that the path was displaced away from the observer on the side of the filtered eye. (Author)

Descriptors :   (*VISION, TEST EQUIPMENT), SPACE PERCEPTION, OPHTHALMOLOGY, VISUAL PERCEPTION, PSYCHOPHYSICS, VISUAL ACUITY, ANOMALIES

Subject Categories : Psychology
      Medicine and Medical Research
      Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE