Abstract
The binocular information decoding capacity of the human eye was measured using the number of correctly identified Landolt rings out of fifteen, the number of completely correctly identified three-ring messages out of five, and the average bits of information transmitted by fifteen letters as criteria of performance. Three intensities (44 ft. L., 150 ft. L., and 400 ft. L.), three frequencies (5 hertz, 10 hertz, and 30 hertz) and six location conditions (20° left of foveal center, 6° left of foveal center, foveal center, 6° right of foveal center, 20° right of foveal center and no light) of a point source light stimulus served as the independent variables. Ten subjects were assigned to each of three experimental frequency groups. A ten subject, sixty observation control group was run without any noise stimulus. Each dependent variable was analyzed using a 3 x 10 x 3 x 6 factorial analysis of variance with repeated measures and replication. Graphic profiles of interaction were developed for location x frequency and location x intensity conditions. A multi-variate analysis was used to develop a formula that predicts the amount of information transmitted under the three noise stimulus variations. The results rendered under the six locations of the noise stimulus were found to be significantly different when all three dependent variable measures were used. The three frequency conditions rendered significantly different results when the bits of information transmitted and the number of correctly identified rings were used as means of measurement. A significant difference was found between the results obtained under the three intensity conditions when bits of information were used in the analysis. ...
Berngen, Frank Edmund (1971). Peripheral and foveal information decoding capacity of the human eye under intermittent photic stimuli. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -213433.