Individual Differences in Responses of Untrained Observers to Stroboscopic Apparent Motion

Two large groups of inexperienced subjects (n = 208 and n = 50) and a small group of experienced subjects (n = 5) were tested using time-till-breakdown as a measure of long-range apparent motion across a range of temporal frequencies. One group of inexperienced subjects was retested after one week a...

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Bibliographic Details
Published in:Perception (London) 1987-01, Vol.16 (5), p.573-581
Main Authors: Finlay, David C, Manning, Mark L, Fenelon, Barney
Format: Article
Language:English
Subjects:
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Humans
Illusions
Learning
Motion Perception
Optical Illusions
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Time Factors
Vision
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Summary:Two large groups of inexperienced subjects (n = 208 and n = 50) and a small group of experienced subjects (n = 5) were tested using time-till-breakdown as a measure of long-range apparent motion across a range of temporal frequencies. One group of inexperienced subjects was retested after one week and demonstrated quite stable patterns of response. Large intersubject variability was observed in terms of the amount of motion seen, with most inexperienced subjects reporting very little apparent motion. A raster display produced a peak frequency 1 Hz higher than a standard tachistoscope display. The role of experience was also examined with a small group of inexperienced subjects (n = 8) tested once daily over five consecutive days. There was high intersubject variability and intrasubject consistency, demonstrating little influence of learning and experience. The results are discussed in terms of current ideas on the breakdown effect.
ISSN:0301-0066
1468-4233
DOI:10.1068/p160573