Dissociating the memory systems mediating complex tool knowledge and skills

Previous research has suggested that different components of complex tool knowledge (e.g., attributes of a tool, how it is grasped, how it is used) may be mediated by different memory systems. For instance, while tool attributes may be represented in the declarative memory system, motor skill acquis...

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Vydáno v:	Neuropsychologia Ročník 48; číslo 10; s. 3026 - 3036
Hlavní autoři:	Roy, Shumita, Park, Norman W.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Kidlington Elsevier Ltd 01.08.2010 Elsevier
Témata:	Adult and adolescent clinical studies Amnesia Amnesia, Retrograde - physiopathology Biological and medical sciences Brain Mapping - methods Declarative memory Disorders of higher nervous function. Focal brain diseases. Central vestibular syndrome and deafness. Brain stem syndromes Female Hand Strength - physiology Humans Knowledge Magnetic Resonance Imaging - methods Male Medical sciences Memory - physiology Memory for actions Middle Aged Motor Skills - physiology Nervous system (semeiology, syndromes) Neurology Neuropsychological Tests Organic mental disorders. Neuropsychology Procedural memory Psychology. Psychoanalysis. Psychiatry Psychopathology. Psychiatry Teaching Tomography, X-Ray Computed - methods Tool use acquisition Verbal Learning - physiology Declarative memory Amnesia Tool use acquisition Procedural memory Memory for actions Human Memory disorder Nervous system diseases Action Cognitive disorder Use Cognition Cerebral disorder Learning Skill Acquisition process Central nervous system disease Neurological disorder Tool
ISSN:	0028-3932, 1873-3514, 1873-3514
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Popis
Shrnutí:	Previous research has suggested that different components of complex tool knowledge (e.g., attributes of a tool, how it is grasped, how it is used) may be mediated by different memory systems. For instance, while tool attributes may be represented in the declarative memory system, motor skill acquisition has been shown to be represented in the procedural memory system. Still other aspects of tool knowledge such as grasping for use and skilled tool use may rely on an integration of both declarative and procedural memory processes. However, the specific memory representations of different aspects of complex tool knowledge are still unclear. In the current study, D.A., an individual with amnesia, and a sample of matched controls were trained to use a set of novel complex tools. Subsequently, memory for different aspects of tool knowledge including motor skill acquisition, tool attributes, tool grasping, and skilled tool use was tested. Results showed that, in comparison to controls, D.A. was unimpaired in motor skill acquisition. In contrast, D.A. was severely impaired in recall of tool attributes, tool grasping, and skilled tool use, suggesting that these components of tool knowledge, at least in part, rely on declarative memory. Results also showed that providing contextual cues during tests of skilled tool use led to remarkable improvement in D.A.’s demonstration of tool use as well as his subsequent recall of tool functional knowledge. Implications of these findings and future directions are discussed.
Bibliografie:	ObjectType-Case Study-2 SourceType-Scholarly Journals-1 ObjectType-Feature-4 content type line 23 ObjectType-Report-1 ObjectType-Article-3 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0028-3932 1873-3514 1873-3514
DOI:	10.1016/j.neuropsychologia.2010.06.012