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This study is concerned with the nature of object representations coded within and between vision and touch, assessed through a study of perceptual matching abilities in a patient with impaired semantic knowledge for objects: JP. Prior work with JP has indicated that she has a category-specific deficit that is particularly severe for tools (see the Case report and Humphreys, G. W., Vernier, M. -P., & Riddoch, M. J. A semantic deficit for tools, in preparation). Here, we test whether, despite this semantic deficit, JP can perform object matching under various conditions. We demonstrate that JP could perform matching across sensory modalities (between touch and vision) when objects appeared in the same view, but this did not generalise across views. In addition, JP was able to match from 3D felt representations to 2D visual representations provided the stimuli were real (previously familiar) objects. The data support the idea that matching between touch and vision can be based on common view-specific, perceptual representations, sensitive to the familiarity of individual objects.

Original publication

DOI

10.1016/j.neuropsychologia.2005.01.014

Type

Journal article

Journal

Neuropsychologia

Publication Date

2005

Volume

43

Pages

1568 - 1579

Keywords

Aged, Aged, 80 and over, Case-Control Studies, Chi-Square Distribution, Female, Humans, Language Disorders, Neuropsychological Tests, Orientation, Pattern Recognition, Visual, Photic Stimulation, Psychomotor Performance, Recognition (Psychology), Semantics, Touch