Chapter

Objects

Barbara Landau and James E. Hoffman

in Spatial Representation

Published in print September 2012 | ISBN: 9780195385373
Published online January 2013 | e-ISBN: 9780199979189 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195385373.003.0003

Series: Oxford Series in Developmental Cognitive Neuroscience

Objects

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People with WS display severe deficits in visual copying tasks such as block construction. This deficit is not related to problems with early visual processes such as acuity or stereoscopic vision or with mid-level visual functions such as perceptual grouping. Moreover, many higher-level visual functions such as object recognition or face processing are intact. However, people with WS do have difficulty recognizing objects from unusual viewpoints and discriminating objects from their mirror images. The general pattern of strengths and weaknesses is consistent with the hypothesis of a spatial deficit focused on the dorsal stream, as discussed in Chapter 2. But perhaps more revealing, for most spatial functions we discuss, people with WS perform remarkably like much younger normally developing children, both quantitatively and qualitatively. The chapter closes by hinting at a new hypothesis: That people with WS show strength for those functions normally acquired early, and weakness for those normally acquired over a protracted developmental timeline.

Keywords: face recognition; object recognition; early vision; V1; middle vision; high-level vision; perceptual grouping; motion coherence; handedness; orientation sensitivity

Chapter.  17558 words.  Illustrated.

Subjects: Cognitive Psychology

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