Impaired Communication Between the Dorsal and Ventral Stream: Indications from Apraxia
Identifieur interne : 000476 ( Pmc/Corpus ); précédent : 000475; suivant : 000477Impaired Communication Between the Dorsal and Ventral Stream: Indications from Apraxia
Auteurs : Carys Evans ; Martin G. Edwards ; Lawrence J. Taylor ; Magdalena IetswaartSource :
- Frontiers in Human Neuroscience [ 1662-5161 ] ; 2016.
Abstract
Patients with apraxia perform poorly when demonstrating how an object is used, particularly when pantomiming the action. However, these patients are able to accurately identify, and to pick up and move objects, demonstrating intact ventral and dorsal stream visuomotor processing. Appropriate object manipulation for skilled use is thought to rely on integration of known and visible object properties associated with “ventro-dorsal” stream neural processes. In apraxia, it has been suggested that stored object knowledge from the ventral stream may be less readily available to incorporate into the action plan, leading to an over-reliance on the objects’ visual affordances in object-directed motor behavior. The current study examined grasping performance in left hemisphere stroke patients with (
Url:
DOI: 10.3389/fnhum.2016.00008
PubMed: 26869897
PubMed Central: 4733863
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