Journal ArticleDOI
Perception of Movement and Correlation in Stroboscopically Presented Noise Patterns
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TLDR
These methods reveal the ability of the visual system to detect correlation of spatiotemporal structures, rather than luminance contrast, and their relation to results obtained through other paradigms is explored.Abstract:
The detection of spatiotemporal correlation in visual displays has been studied with stroboscopically presented random-noise patterns and with a signal-to-noise ratio paradigm in which the moving pattern was masked with spatiotemporal white noise. These methods reveal the ability of the visual system to detect correlation of spatiotemporal structures, rather than luminance contrast. The effects of stroboscopic rate, exposure duration, target size, and the extent of discrete spatial shifts were studied in both the central and the peripheral visual field. Evidence for orientation-selective and speed-selective mechanisms was found, as well as for extensive spatiotemporal integration. Bounds on parameters of spatial and temporal correlation and integration were obtained. The results are similar to those reported earlier, and also extend them. Their relation to results obtained through other paradigms (eg the motion aftereffect) is explored.read more
Citations
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Journal ArticleDOI
The response of area MT and V1 neurons to transparent motion
TL;DR: It is found that area V1 cells responded to their preferred direction of movement even under transparent conditions, whereas area MT cells were suppressed under the transparent condition, suggesting a simple solution to the transparency problem at the level of area V 1.
Journal ArticleDOI
Attentional modulation of adaptation to two-component transparent motion
TL;DR: It is concluded that attention can differentiate between spatially superimposed motion vectors and that attention modulates the activity of motion mechanisms before or at the level where adaptation gives rise to MAEs.
Journal ArticleDOI
Dynamic response properties of movement detectors: theoretical analysis and electrophysiological investigation in the visual system of the fly
Martin Egelhaaf,Werner Reichardt +1 more
TL;DR: Dynamic aspects of the computation of visual motion information are analysed both theoretically and experimentally, providing very specific evidence that the movement detector theory developed here can be applied to motion detection in the fly.
Journal ArticleDOI
The distribution of human motion detector properties in the monocular visual field.
TL;DR: The detection of coherent movement in stroboscopically displayed moving random checkerboard ("Julesz-") patterns is studied psychophysically for eccentricities up to 48 degrees in the temporal visual field to predict the main properties of the motion detection system at any eccentricity.
References
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Journal ArticleDOI
The mechanism of directionally selective units in rabbit's retina.
Horace Barlow,W. R. Levick +1 more
TL;DR: Experiments are described which show, first, that directional selectivity is not due to optical aberrations of some kind and, secondly, that it is not a simple matter of the latency of response varying systematically across the receptive field.
Autocorrelation, a principle for the evaluation of sensory information by the central nervous system
Journal ArticleDOI
A short-range process in apparent motion
TL;DR: Perceptual segregation in an alternated pair of random-dot patterns was perceived as a segregated, coherently moving shape only if the displacement was small, while classical apparent motion with larger displacements involves a different process.
Journal ArticleDOI
Differential Effects of Central Versus Peripheral Vision on Egocentric and Exocentric Motion Perception
TL;DR: Simultaneous presentation of conflicting central and peripheral optokinetics stimuli has shown that exocentric orientation depends on the peripheral stimulus whereas optokinetic nystagmus and egocentric motion perception rely on the center of the visual field.
Journal ArticleDOI
Psychophysical isolation of movement sensitivity by removal of familiar position cues.
TL;DR: It is concluded that the random-dot stimulus can isolate motion- from position-sensitive mechanisms and that motion comprises a distinct form of sensitivity, not derivable from the measured forms of position sensitivity.