Abstract

Binocular settings of equidistance have been obtained in a two-rod test apparatus that provides real-depth cues. The magnitude of the localization error for a black vertical rod which oscillates in a given frontal plane has been studied as a function of target velocity at each of three specified photopic levels of binocular retinal illuminance.

The direction of the localization error was opposite for the two observers used. For both observers, however, the absolute magnitude of the localization errors progressively increased as target velocity was increased at each of the three retinal illuminance levels.

Also, retinal illuminance level has an effect on spatial localization. For both observers, the oscillating rod was localized at increasing distances from the eyes as level of retinal illuminance was increased at a given target velocity.

These new data are discussed in relation to comparable data obtained in earlier experiments on depth settings for stationary targets and on depth settings for oscillating targets viewed under conditions of unequal binocular retinal illuminance (Pulfrich stereophenemenon).

© 1960 Optical Society of America

Equidistance Settings at Photopic Retinal-Illuminance Levels as a Function of Target Velocity in a Frontal Plane*

Alfred Lit
J. Opt. Soc. Am. 54(1) 83-88 (1964)

Depth-Discrimination Thresholds for Stationary and Oscillating Targets at Various Levels of Retinal Illuminance*

Alfred Lit and Harlyn D. Hamm
J. Opt. Soc. Am. 56(4) 510-516 (1966)

Magnitude of the Pulfrich Stereophenomenon as a Function of Target Thickness*

Alfred Lit
J. Opt. Soc. Am. 50(4) 321-327 (1960)

Depth-Discrimination Thresholds as a Function of Binocular Differences of Retinal Illuminance at Scotopic and Photopic Levels*

Alfred Lit
J. Opt. Soc. Am. 49(8) 746-752 (1959)

Effect of Luminance-Matched Wavelength on Depth Discrimination at Scotopic and Photopic Levels of Target Illumination

WILLIAM O. DWYER and ALFRED LIT
J. Opt. Soc. Am. 60(1) 127-131 (1970)