Improvement in direction discrimination: No role for eye movements
نویسندگان
چکیده
منابع مشابه
Gloss discrimination and eye movements
Human observers are able to make fine discriminations of surface gloss. What cues are they using to perform this task? In previous studies, we identified two reflection-related cues—the contrast of the reflected image (c, contrast gloss) and the sharpness of reflected image (d, distinctness-of-image gloss)--but these were for objects rendered in standard dynamic range (SDR) images with compress...
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With training, an observer's ability to discriminate similar directions of motion gradually improves. A series of studies reveals that this improvement, (1) is restricted to the trained direction and other, similar directions, (2) persists for at least several months, (4) shows appreciable, but not complete, transfer between the two eyes, and (5) is largely restricted to the stimulated region o...
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The existence of involuntary movements of the eye during fixation gives rise to a problem concerning location m visual space. This has been investigated using a psychophysical task in which subJects judge the relative positions of two stimuli briefly flashed on a screen gnd separated by a temporal interval. It was shown, in line with the work of Matin (1972). that a subject’s ability to compare...
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It has long been known that ocular pursuit of a moving target has a major influence on its perceived speed (Aubert, 1886; Fleischl, 1882). However, little is known about the effect of smooth pursuit on the perception of target direction. Here we compare the precision of human visual-direction judgments under two oculomotor conditions (pursuit vs. fixation). We also examine the impact of stimulu...
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The concerted action of saccades and fixational eye movements are crucial for seeing stationary objects in the visual world. We studied how these eye movements contribute to retinal coding of visual information using the archer fish as a model system. We quantified the animal’s ability to distinguish among objects of different sizes, and measured its eye movements. Then, we recorded from popula...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1985
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03207065