Results 251 to 260 of about 12,598 (296)
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The dynamics of vertical vergence
Experimental Brain Research, 1997We measured the gain and phase of vertical vergence in response to disjunctive vertical oscillations of dichoptic textured displays. The texture elements were m-scaled to equate visibility over the area of the display and were aperiodic and varied in shape so as to avoid spurious binocular matches.
I P, Howard, R S, Allison, J E, Zacher
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Vision Research, 1972
Abstract A photographic technique has demonstrated that 60 per cent of unrestrained cats are capable of vergence movements during the examination of interesting near objects. The remaining cats showed no sign of vergence under the conditions of the experiment.
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Abstract A photographic technique has demonstrated that 60 per cent of unrestrained cats are capable of vergence movements during the examination of interesting near objects. The remaining cats showed no sign of vergence under the conditions of the experiment.
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Nature, 1961
IT has been demonstrated1 that barbiturates influence conjugate eye movements selectively in that they abolish the smooth tracking movements while leaving the saccadic movements intact. Disjunctive eye movements have time characteristics akin to the tracking movements ; some effect of barbiturates on convergence has been mentioned2.
G, WESTHEIMER, C, RASHBASS
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IT has been demonstrated1 that barbiturates influence conjugate eye movements selectively in that they abolish the smooth tracking movements while leaving the saccadic movements intact. Disjunctive eye movements have time characteristics akin to the tracking movements ; some effect of barbiturates on convergence has been mentioned2.
G, WESTHEIMER, C, RASHBASS
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Vergence boundaries: an extension of the vergence concept
Journal of Structural Geology, 1982Abstract The difficulty in distinguishing between vergence changes on adjacent limbs of tight primary folds and the similar effects produced by non-coaxial refolding of primary folds by larger-scale folds is outlined. It is suggested that a distinction should be made between typical and atypical vergence boundaries.
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Documenta Ophthalmologica, 1981
In a preliminary report (Houtman et al., 1977) some of the characteristics of vertical vergence movements were mentioned. One of the most striking features appeared to be their slowness, compared to the horizontal disjunctive eye movements. This is a report of further studies on the dynamic characteristics of the vertical disjunctive eye movements ...
Houtman, W.A., Roze, J.H., Scheper, W.
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In a preliminary report (Houtman et al., 1977) some of the characteristics of vertical vergence movements were mentioned. One of the most striking features appeared to be their slowness, compared to the horizontal disjunctive eye movements. This is a report of further studies on the dynamic characteristics of the vertical disjunctive eye movements ...
Houtman, W.A., Roze, J.H., Scheper, W.
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Optometry and Vision Science, 1986
ABSTRACT The binocular visual field is the combined visual field obtained when the eyes are fixating a given point without head movements. The binocular field of fixation is the area within which central bifixation is possible by moving the eyes but not the head.
D D, Sheni, A, Remole
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ABSTRACT The binocular visual field is the combined visual field obtained when the eyes are fixating a given point without head movements. The binocular field of fixation is the area within which central bifixation is possible by moving the eyes but not the head.
D D, Sheni, A, Remole
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Fusional vergence in microstrabismus
Documenta Ophthalmologica, 1988The fusional vergence velocity was studied in microstrabismus and in normal persons. In microstrabismus the system works less precisely in that small changes in disparity produce no response, while it is possible that the difference between the amplitude of the stimulus and the amplitude of the response is greater.
Boonstra, F. N. +2 more
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Optometry and Vision Science, 1991
ABSTRACT A number of previous investigations have suggested that the relative contribution of proximal vergence to the overall vergence response may increase with age. Accordingly the present study has examined the proximal convergence/test distance (PC/T) ratio in a clinical population of 106 subjects ranging from 6 to 47 years of ...
S C, Hokoda +2 more
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ABSTRACT A number of previous investigations have suggested that the relative contribution of proximal vergence to the overall vergence response may increase with age. Accordingly the present study has examined the proximal convergence/test distance (PC/T) ratio in a clinical population of 106 subjects ranging from 6 to 47 years of ...
S C, Hokoda +2 more
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Vergence Adaptation and Senescence
Optometry and Vision Science, 1994ABSTRACT Purpose. The characteristics of prism adaptation have been evaluated by many previous studies but most have been performed on young subjects (typically 18 to 35 years of age). Because little information is available regarding the effect of age on vergence adaptation, we assessed prism ...
B, Winn +3 more
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Vergence Adaptation in Esotropia
Optometry and Vision Science, 1992ABSTRACT Vergence adaptation and anomalous fusional movements have been used by strabismics to overcome prism. There has been controversy in the literature regarding the nature of the vergence responses by esotropes to prism, i.e., fusional, avoidance of fusion, and/or anomalous fusion.
P E, Carniglia, J, Cooper
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