Journal ArticleDOI
Inference of object use from pantomimed actions by aphasics and patients with right hemisphere lesions
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Analysis of movement features contributing to subjects' choices reveal speed of movement and object weight to be the most robust and hand shape and size to beThe most fragile.Abstract:
Twenty-four aphasic and fifteen right brain-damaged subjects were compared on their ability to identify the objects whose use was depicted in a series of twenty videotaped pantomimes. Aphasics were inferior to right brain-damaged patients in inferring object use. Success was correlated with Performance IQ, but not with language measures. Analysis of movement features contributing to subjects' choices reveal speed of movement and object weight to be the most robust and hand shape and size to be the most fragile.read more
Citations
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Journal ArticleDOI
On the Inseparability of Grammar and the Lexicon: Evidence from Acquisition, Aphasia and Real-Time Processing.
TL;DR: The authors showed that the emergence of grammar is highly dependent upon vocabulary size, a finding confirmed and extended in atypical populations, and found no evidence for a modular dissociation between grammar and the lexicon.
Journal ArticleDOI
Two action systems in the human brain
TL;DR: A growing body of evidence suggests that there are at least two distinct Dorsal routes in the human brain, referred to as the "Grasp" and "Use" systems.
Proceedings ArticleDOI
Objects in Action: An Approach for Combining Action Understanding and Object Perception
Abhinav Gupta,Larry S. Davis +1 more
TL;DR: A Bayesian approach is presented which unifies the inference processes involved in object classification and localization, action understanding and perception of object reaction, and which can segment and recognize actions which are either too subtle to perceive or too hard to recognize using motion features alone.
Journal ArticleDOI
No double-dissociation between optic ataxia and visual agnosia: multiple sub-streams for multiple visuo-manual integrations.
TL;DR: It is shown that the currently available empirical data do not suffice to support a double-dissociation between OA and VA and proposed that mild mirror ataxia, consisting of misreaching errors when the controlesional hand is guided to a visual goal though a mirror, could correspond to OA with an isolated "hand effect".
Journal ArticleDOI
It takes the whole brain to make a cup of coffee: the neuropsychology of naturalistic actions involving technical devices.
TL;DR: Analysis of the experimental tests and their correlations to naturalistic actions suggested that different cognitive deficits caused failure in both patient groups, and that in LBD patients there were also different causes for failure on both naturalistic action.
References
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Journal ArticleDOI
The prehensile movements of the human hand.
TL;DR: It is shown that movements of the hand consist of two basic patterns of movements which are termed precision grip and power grip, which appear to cover the whole range of prehensile activity of the human hand.
Book ChapterDOI
On the internal structure of perceptual and semantic categories
TL;DR: In this article, the internal structure of perceptual and semantic categories has been investigated in the context of the development of children's understanding of criterial attributes and hierarchies of super ordination, finding consistent evidence that children do not categorize or define words by the same principles of abstraction used by adults.
Journal ArticleDOI
Representation and recognition of the movements of shapes.
David Marr,Lucia M. Vaina +1 more
TL;DR: A representation is proposed for the movements of shapes that lie within the scope of the Marr & Nishihara (1978) 3-D model representation of static shapes, called the state─motion─state (SMS) moving shape representation, and several examples of its application are given.