scholarly journals Dynamic visual noise promotes social attraction, but does not affect group size preference, in a shoaling fish

2021 ◽  
Vol 177 ◽  
pp. 39-48
Author(s):  
Samuel R. Matchette ◽  
James E. Herbert-Read
Keyword(s):  
Group Size ◽  
Visual Noise ◽  
Dynamic Visual Noise ◽  
Social Attraction ◽  
Size Preference

Dynamic Visual Noise Affects Visual Short-Term Memory for Surface Color, but not Spatial Location

2010 ◽  
Vol 57 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Kevin Dent
Keyword(s):  
Short Term Memory ◽  
Spatial Location ◽  
Visual Noise ◽  
Dynamic Visual Noise ◽  
Short Term ◽  
Surface Color ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Experimental Tool ◽  
Spatial Locations

In two experiments participants retained a single color or a set of four spatial locations in memory. During a 5 s retention interval participants viewed either flickering dynamic visual noise or a static matrix pattern. In Experiment 1 memory was assessed using a recognition procedure, in which participants indicated if a particular test stimulus matched the memorized stimulus or not. In Experiment 2 participants attempted to either reproduce the locations or they picked the color from a whole range of possibilities. Both experiments revealed effects of dynamic visual noise (DVN) on memory for colors but not for locations. The implications of the results for theories of working memory and the methodological prospects for DVN as an experimental tool are discussed.

Coherent motion and stereopsis in dynamic visual noise

1977 ◽  
Vol 17 (8) ◽  
pp. 903-910 ◽  
Author(s):  
Joseph J. Mezrich ◽  
Albert Rose
Keyword(s):  
Visual Noise ◽  
Coherent Motion ◽  
Dynamic Visual Noise

Interocular Delay Produces Depth in Subjectively Moving Noise Patterns

1980 ◽  
Vol 32 (3) ◽  
pp. 387-395 ◽  
Author(s):  
M. J. Morgan ◽  
Roger Ward
Keyword(s):  
Apparent Motion ◽  
Visual Noise ◽  
Moving Target ◽  
Dynamic Visual Noise ◽  
Spatial Disparity ◽  
Depth Effect ◽  
Retinal Disparity ◽  
As If

Brief apparent motion sequences were introduced into a dynamic visual dot display by spatially shifting selected dots between successive frames. This causes the display to look as if it is drifting continuously in one direction. When such a display is observed with an interocular delay the drifting dots appear to be displaced in depth, even though there is no conventional retinal disparity in the display. We found that the magnitude of this depth shift increased with the duration of the apparent motion sequences. With sequences of five or more frames duration the depth effect was very similar to that which would have been predicted with a continuously moving target. With briefer sequences the size of the depth effect decreased rapidly. We suggest that apparent motion cascades form the basis of Tyler's dynamic visual noise stereophenomenon, and we question his “random spatial disparity” hypothesis.

A New Random-Dot Stereo Illusion and its Application to the Anstis–Howard–Rogers Effect

Perception ◽  
1984 ◽  
Vol 13 (5) ◽  
pp. 547-553
Author(s):  
James Thomas Enright
Keyword(s):  
Geometrical Optics ◽  
Visual Noise ◽  
Visual Images ◽  
Dynamic Visual Noise ◽  
Residual Component ◽  
Different Depths ◽  
Global Stereopsis ◽  
Stable Surfaces ◽  
Local Depth

When the dynamic visual noise of an untuned television set is viewed with image defocusing (positive lenses) and with a narrow vertical obstruction partially blocking the pupil of one eye, the video ‘snow’ seems to separate into two stable surfaces at different depths, divided by a vertical discontinuity. The main features of this illusion can be quantitatively accounted for in terms of the optics of defocused images and the retinal disparities predicted from blur circles. A residual component of the illusion, however, which was perceived by a majority of subjects, cannot be readily explained by geometrical optics; it apparently reflects a more subtle aspect in the processing of visual images, corresponding to the Anstis–Howard–Rogers stereo-effect, in which local depth configurations can bias global stereopsis. Several novel aspects of that effect are described, based on use of this obstructed-pupil illusion as the evoking stimulus.

Stereopsis in dynamic visual noise

Nature ◽  
1974 ◽  
Vol 250 (5469) ◽  
pp. 781-782 ◽  
Author(s):  
C. WILLIAM TYLER
Keyword(s):  
Visual Noise ◽  
Dynamic Visual Noise

Spatial properties of mechanisms for detection of moving dot targets in dynamic visual noise

Perception ◽  
1989 ◽  
Vol 18 (3) ◽  
pp. 285-291 ◽  
Author(s):  
Clara Casco ◽  
Michael J Morgan ◽  
Roger M Ward
Keyword(s):  
Visual Noise ◽  
Dynamic Visual Noise ◽  
Spatial Properties
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