Space Constancy vs Shape Constancy

作者：Jaekl Philip M^*; Harris Laurence R

来源：Seeing and Perceiving, 2010, 23(5-6): 385-399.

DOI：10.1163/187847510X541153

• Shape constancy
• space constancy
• perception vs action
• foveal bias
• memory averaging

The perceived distance between objects has been found to decrease over time in memory, demonstrating a partial failure of space constancy. Such mislocalization has been attributed to a generalized compression effect in memory. We confirmed this drift with a pair of remembered dot positions but did not find a compression of perceived distance when the space between the dots was filled with a connecting line. When the dot pairs were viewed eccentrically the compression in memory was substantially less. These results are in line with a combination of factors previously demonstrated to cause distortion in spatial memory - foveal bias and memory averaging rather than a general compression of remembered visual space. Our findings indicate that object shape does not appear to be vulnerable to failures of space constancy observed with remembered positions.

• 出版日期2010