Perceptual differentiation and category effects in normal object recognition
نویسندگان
چکیده
منابع مشابه
Perceptual differentiation and category effects in normal object recognition: a PET study.
The purpose of the present PET study was (i) to investigate the neural correlates of object recognition, i.e. the matching of visual forms to memory, and (ii) to test the hypothesis that this process is more difficult for natural objects than for artefacts. This was done by using object decision tasks where subjects decided whether pictures represented real objects or non-objects. The object de...
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To investigate the neural correlates of the structural and semantic stages of visual object recognition and to see whether any effects of category could be found at these stages, we compared the rCBF associated with two categorization tasks (subjects decided whether pictures represented artefacts or natural objects), and two object decision tasks (subjects decided whether pictures represented r...
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Studies of patients with category-specific agnosia (CSA) have given rise to multiple theories of object recognition, most of which assume the existence of a stable, abstract semantic memory system. We applied an episodic view of memory to questions raised by CSA in a series of studies examining normal observers' recall of newly learned attributes of familiar objects. Subjects first learned to a...
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We investigate two generative probabilistic models for category-level object recognition. Both schemes are designed to learn categories with a minimum of supervision, requiring only a set of images known to contain the target category from a similar viewpoint. In both methods, learning is translation and scale-invariant; does not require alignment or correspondence between the training images, ...
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Literature to date has demonstrated that producers and products spanning multiple categories have inferior market performance. However, two related but distinct explanations exist as to the source of such a discount. One explanation suggests that “actual” skills are degraded when producers attempt to engage across diverse categories. Another explanation involves perceptual fit to category repre...
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ژورنال
عنوان ژورنال: Brain
سال: 1999
ISSN: 1460-2156,0006-8950
DOI: 10.1093/brain/122.11.2159