期刊
VISION RESEARCH
卷 51, 期 8, 页码 812-818出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2011.02.003
关键词
Action; Perception; Grasping; Neuropsychology; Psychophysics; Illusion
Westwood and Goodale (this issue) review the evidence for distinct visual streams for action and perception. They argue that, on balance, both the neuropsychological and psychophysical data support this distinction. They claim that critical results were either statistically inconclusive (because they consisted of negative evidence) or based on a suspect calibration procedure. Finally, they suggest that explanations dismissing the psychophysical evidence for the TVSH are contradicted by the neuropsychological evidence. We disagree with their assessment. 'Negative evidence' is not necessarily inconclusive. Problems raised by mixed evidence are best dealt with by conducting meta-analytical studies, which so far are only in part consistent with the TVSH. Correction (calibration) of illusion effects is critical for comparisons across stimuli, studies, and tasks. We furthermore argue that both psychophysical and neuropsychological evidence can be explained without assuming divergent pathways for perception and action. (C) 2011 Elsevier Ltd. All rights reserved.
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