| Visual Perception of Spatial Location and Orientation |
23 MAR 2000 |
6 pages |
| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK DEPT OF PSYCHOLOGY
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 | During the period covered by this report: (a) We carried out more than 15 fully parameterized experiments in addition to a number of smaller efforts; we also made substantial progress in our theoretical work. (b) We published (including in press, submitted, and two that are in the last stages of preparation) 19 full length articles in peer-reviewed journals. (c) We made 37 presentations at professional meetings ... |
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| Augmentation of 'Visual Perception of Elevation' |
26 JAN 1998 |
108 pages |
| Authors:
Leonard Matin; TRUSTEES OF COLUMBIA UNIV NEW YORK
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| Seventeen graduate and undergraduate students participated to various degrees in different phases of the research. Several, more extensively involved, regularly joined in laboratory meetings, ongoing discussions, and formulation of research designs and plans in addition to participating in the construction of apparatus, and collection and processing of experimental data. Others were essentially focused on data collection and processing. The experiments were all concerned with the visual perception of elevation, most ... |
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| Visual Perception of Elevation |
29 AUG 94 |
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| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK DEPT OF PSYCHOLOGY
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 | The work at Columbia has concentrated on 4 matters: (1) Experimental work aimed at determining the aspects of individual lines and combinations of lines in the visual field that generate the substantial influence on the visual perception of eye level (VPEL). (2) Experimental work aimed at determining the aspects of individual lines and combinations of lines on the visual perception of the vertical (VPV) and visually perceived straight ahead (VPSA) ... |
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| Visual Perception of Elevation |
25 JAN 93 |
12 pages |
| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK DEPT OF PSYCHOLOGY
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| The work at the Columbia laboratory concentrated on two matters: (1) expansion of the work that began last year aimed at uncovering the laws of spatial summation between and within members of parallel line sets with regard to the influence on the setting of visually perceived eye level (VPEL); (2) to begin work on the separation of components of the body-referenced mechanism and to determine their separate influence on VPEL. ... |
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| Visual Perception of Elevation |
20 JAN 92 |
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| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK DEPT OF PSYCHOLOGY
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| The experiments demonstrate the importance for human observers of the retinal orientation and location of individual straight lines in determining (1) the physical elevation visually perceived as being at eye level (VPEL), and (2) the orientation within a frontal plane visually perceived as being vertical (VPV). The particular depth plane is unimportant for each discrimination as shown by experiments in which stimuli at the same retinal location from differently pitched ... |
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| Spatial Localization in Strabismic Observers |
10 JUN 1983 |
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| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK DEPT OF PSYCHOLOGY
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| This report is an investigation of the way in which extraretinal eye position information (EEPI) is involved in the determination of localization and the possibility of flexibility and/or adaptation in the relation between the retinal image location (RI) and EEPI. |
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| Experiments in Visual Localization |
1982 |
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| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK VISUAL SCIENCE LAB
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| For an observer viewing in a normally-illuminated and structured visual field EEPI-driven cancellation mechanisms are not normally involved in the determination of visual localization of objects in the visual field either relative to each other or relative to visual norms such as the perceived eye- level horizontal or perceived median plane. In darkness EEPI-driven cancellation mechanisms play a central role in determining visual localization of objects relative to visual norms. ... |
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| VARIATION OF THE MAGNITUDE OF THE HORIZONTAL-VERTICAL ILLUSION WITH RETINAL ECCENTRICITY. |
10 MAR 1969 |
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| Authors:
Douglas Pearce; Leonard Matin; DEFENCE RESEARCH ESTABLISHMENT TORONTO DOWNSVIEW (ONTARIO)
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| The study is concerned with the effect of retinal eccentricity on the magnitude of the horizontal-vertical illusion, which is the overestimation of vertical extents relative to horizontal extents. The present study examines the question directly by presenting the usual horizontal-vertical 'L' pattern in the near periphery. (Author) |
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| BIONOCULAR SUMMATION AT THE ABSOLUTE THRESHOLD OF PERIPHERAL VISION, |
13 APR 1962 |
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| Authors:
Leonard Matin; COLUMBIA UNIV NEW YORK
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| Binocular probability of seeing, P(B), was measured as a function of the time between onsets of 2-msec, 35-min visual angle flashes to corresponding locations 7 degrees horizontally displaced from the foveas of both eyes of dark adapted subjects. P(B) was greater than the value that would be predicted if the two eyes were independent detectors (P prime (B)) for interstimulus intervals below 100 msec. Two peak values of P(B) were ... |
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