| SUPPRESSION AND FUSION IN STEREOPSIS. |
AUG 1968 |
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| Authors:
Lloyd Kaufman; YESHIVA UNIV NEW YORK FERKAUF GRADUATE SCHOOL OF HUMANITIES AND SOCIAL SCIENCES
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 | Contents: Amplitude modulation of brain waves; The waveform and spectrum of the high-frequency visual evoked response. |
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| THE EFFECT OF WATER IMMERSION ON PERCEPTION OF THE OCULOGRAVIC ILLUSION IN NORMAL AND LABYRINTHINE-DEFECTIVE SUBJECTS, |
14 SEP 1967 |
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| Authors:
Ashton Graybiel; Earl F. Miller II; Bernard D. Newsom; Robert S. Kennedy; NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA
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| The separate and combined influences of otolith and nonotolith sensory inputs upon perception of the oculogravic illusion were investigated by maniuplating the visual and gravitoinertial force environments. By comparing the visually perceived direction of space by four naval aviators and four deaf persons with bilateral labyrinthine defects when dry and when immersed in water up to neck level, the contributions of (1) field force receptors in the vestibular organs and ... |
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| SOME OBSERVATIONS AND MEASUREMENTS OF THE PANUM PHENOMENON. |
13 APR 1967 |
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| Authors:
Charles F. Gettys; George S. Harker; ARMY MEDICAL RESEARCH LAB FORT KNOX KY
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| The angular separation between the 'binocular' and the 'monocular' line of Panum's 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 Panum's limiting case is predictable and ... |
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| VISUAL HORIZONTAL PERCEPTION IN RELATION TO OTOLITH FUNCTION, |
23 DEC 1966 |
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| Authors:
Earl F. Miller II; Alfred R. Fregly; Ashton Graybiel; NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA
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| To determine the influence of the otolith organs on visually perceived direction of space the constant and variable errors of normal persons and deaf persons with bilateral labyrinthine defects during nineteen positions of body tilt within plus or minus 90 degrees of gravitational vertical were compared. The general perceptual pattern was similar for the two groups, although that of the labyrinthine-defective group was found to be more variable, and greater ... |
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| PROBLEMS IN DEPTH PERCEPTION: A METHOD OF SIMULATING OBJECTS MOVING IN DEPTH, |
DEC 1965 |
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| Authors:
Walter C. Gogel; Henry W. Mertens; FEDERAL AVIATION AGENCY WASHINGTON D C OFFICE OF AVIATION MEDICINE
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| Equations were developed for the simulation on a screen of the movement of an object or surface toward or away from an observer by the movement of a positive photographic transparency of the object or surface away or toward a point source. The general case was developed for simulating objects in which the distance of the observer from the screen was constant but not necessarily equal to the distance of ... |
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| THE VISUAL PERCEPTION OF SPATIAL EXTENT, |
SEP 1963 |
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| Authors:
Walter C. Gogel; CIVIL AEROMEDICAL INST OKLAHOMA CITY OKLA
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| This study was concerned with the manner in which perceived depth and perceived frontoparallel size varied with physical distance and hence with each other. An equation expressing the relation between perceived frontoparallel size and physical depth was developed and applied to frontoparallel size judgments determined with four observers under two viewing conditions. Using the same equation and an expression of the size-distance invariance hypothesis, an additional equation was developed which ... |
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| The Magnitude of the Pulfrich Stereophenomenon as a Function of Binocular Intensity Differences at Various Levels of Illumination. |
1948 |
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| Authors:
Alfred Lit; COLUMBIA UNIV NEW YORK
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| This investigation is concerned with a stereophenomenon first described and analysed by Pulfrich: with unequal illuminations in the two eyes, the bob of an oscillating plane pendulum appears to rotate out of its plane of oscillation. The apparent displacement has been accounted for in terms of differences in visual latent periods for the two eyes. Appropriate theory allows for calculation of latency differences when the apparent displacement of the oscillating ... |
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| THE ILLUSORY PERCEPTION OF MOVEMENT CAUSED BY ANGULAR ACCELERATION AND BY CENTRIFUGAL FORCE DURING FLIGHT. III. HABITUATION AND TECHNIQUE OF ASSUMING THE TURN AS FACTORS IN ILLUSORY PERCEPTION. |
01 JUL 1946 |
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| Authors:
Brant Clark; Ashton Graybiel; K. MacCorquodale; NAVAL SCHOOL OF AVIATION MEDICINE PENSACOLA FLA
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| Visual perception during flight is influenced to a considerable degree by angular acceleration and by increased 'g'. Studies of the visual illusions reported by subjects observing an isolated target in the dark, show marked illusions of motion and displacement during and following turns. The flight paths described by the aircraft in these turns were executed by means of a constant power setting and a change in the angle of attack ... |
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Reports by Keyword(s)
(SPACE PERCEPTION
