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Comparing view sensitivity in shape discrimination to shape sensitivity in view discrimination

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84940

Lawson,  R
Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83839

Bülthoff,  HH
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Lawson, R., & Bülthoff, H. (2006). Comparing view sensitivity in shape discrimination to shape sensitivity in view discrimination. Perception and Psychophysics, 68(4), 655-673. doi:10.3758/BF03208766.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-D1C1-C
Abstract
In three picture-picture matching experiments, the effects of a view change on our ability to detect a shape change (Experiments 1 and 2) were contrasted with the effects of a shape change on our ability to detect a view change (Experiment 3). In each experiment, both view changes and shape changes influenced performance. However, shape changes had more influence than did view changes in the shape change detection task. Conversely, view changes were more influential when the task was to detect view changes. Thus, the participants could often discriminate between the effects of shape changes and the effects of view changes. The disruptive effect of task-irrelevant changes (view changes in the first two experiments; shape changes in the final experiment) does not support stankiewicz‘s (2002) claim that information about viewpoint and about shape can be estimated independently by human observers. However, the greater effect of variation in the task-relevant than in the task-irrelevant dimens ion indicates that the observers were moderately successful at disregarding irrelevant changes.