scholarly journals Global cooperativity of the short-range process in apparent movement: Evidence obtained with contour-containing stimuli

1990 ◽  
Vol 47 (4) ◽  
pp. 360-368 ◽  
Author(s):  
J. Timothy Petersik
Keyword(s):  
Short Range ◽  
Apparent Movement ◽  
Range Process

Dependence of Apparent Movement of a Subjective Figure on the Perceptual Fate of Inducing Elements

Perception ◽  
1987 ◽  
Vol 16 (4) ◽  
pp. 453-459 ◽  
Author(s):  
J Timothy Petersik
Keyword(s):  
Long Range ◽  
Short Range ◽  
Apparent Movement ◽  
Subjective Figure ◽  
Range Process

In a series of demonstrations, two stimulus frames that contained subjective figures were alternated. It is shown that the perception of apparent movement of a subjective figure depends upon the configuration of the inducing stimuli and whether or not conditions of presentation favor the short-range or long-range process in apparent movement. Those conditions that favor the long-range process result in global apparent movement of the subjective figure. However, those conditions that favor the short-range process may prevent apparent movement of the subjective figure, or may result in a kind of apparent movement that is qualitatively different from that seen when similar physical contours are alternated. These results are interpreted in terms of the assumed differences between the short-range and long-range processes.

Correspondence Strength in Apparent Movement: Reply to Petersik Et Al

Perception ◽  
1982 ◽  
Vol 11 (6) ◽  
pp. 747-748
Author(s):  
Shimon Ullman
Keyword(s):  
Long Range ◽  
Short Range ◽  
Apparent Movement

Petersik et al suggest that similarity and related effects are the result of a tradeoff between the short-range and long-range processes; the main point of disagreement centers around the source of these effects and does not bear directly on the main issues discussed in the original paper.

Failure to find an absolute retinal limit of a putative short-range process in apparent motion

1983 ◽  
Vol 23 (12) ◽  
pp. 1663-1670 ◽  
Author(s):  
J. Timothy Petersik ◽  
Randall Pufahl ◽  
Elizabeth Krasnoff
Keyword(s):  
Apparent Motion ◽  
Short Range ◽  
Range Process

Correspondence Strength in Apparent Movement as a Function of Short-Range and Long-Range Processes: Comments on Ullman (1980)

Perception ◽  
1982 ◽  
Vol 11 (6) ◽  
pp. 743-746 ◽  
Author(s):  
J Timothy Petersik ◽  
Mark Boring ◽  
Melinda McDill
Keyword(s):  
Long Range ◽  
Short Range ◽  
Apparent Movement ◽  
Relative Activity ◽  
Joint Function

It is argued that correspondence strength is a joint function of the relative activity of short-range and long-range processes and not solely a function of a single correspondence process, and this puts Ullman's interpretation of his results in doubt.

A short-range process in apparent motion

1974 ◽  
Vol 14 (7) ◽  
pp. 519-527 ◽  
Author(s):  
Oliver Braddick
Keyword(s):  
Apparent Motion ◽  
Short Range ◽  
Range Process

Temporal Properties of the Short-Range Process in Apparent Motion

Perception ◽  
1985 ◽  
Vol 14 (2) ◽  
pp. 181-192 ◽  
Author(s):  
Curtis L Baker ◽  
Oliver J Braddick
Keyword(s):  
Motion Perception ◽  
Apparent Motion ◽  
Motion Detection ◽  
Interstimulus Interval ◽  
Short Range ◽  
Time Interval ◽  
Optimal Motion ◽  
Temporal Properties ◽  
Range Process

A study is reported of the perception of random-dot two-frame apparent motion in which the durations of each exposure and the interstimulus interval between them were varied. The results are largely consistent with the rule that, for optimal motion detection, a portion of each exposure must fall within the same time interval of about 40 ms. In addition, motion perception is separably dependent on the displacement from one exposure to the next and on the time interval between those exposures, rather than on the ‘velocity implied by their ratio.

scholarly journals Group movement produced by the short-range process

1986 ◽  
Vol 39 (6) ◽  
pp. 445-446 ◽  
Author(s):  
J. Timothy Petersik
Keyword(s):  
Short Range ◽  
Group Movement ◽  
Range Process

Domain coarsening by grain boundary migration in ordered Ni4Mo

1986 ◽  
Vol 44 ◽  
pp. 560-561
Author(s):  
K. Vasudevan ◽  
H. P. Kao ◽  
C. R. Brooks ◽  
E. E. Stansbury
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Short Range ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Rapid Cooling ◽  
Temperature Range ◽  
Fee Structure ◽  
Domain Coarsening ◽  
Boundary Reaction

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.

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