Journal
NEUROCASE
Volume 8, Issue 1-2, Pages 61-79Publisher
OXFORD UNIV PRESS
DOI: 10.1093/neucas/8.1.61
Keywords
action disorganization; frontal apraxia; ideational apraxia; theories and models of action selection
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Funding
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R01NS031824] Funding Source: NIH RePORTER
- NINDS NIH HHS [R01 NS31824] Funding Source: Medline
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This paper describes the contention scheduling/supervisory attentional system approach to action selection and uses this account to structure a survey of current theories of the control of action. The focus is on how such theories account for the types of error produced by some patients with frontal and/or left temporoparietal damage when attempting everyday tasks. Four issues, concerning both the theories and their accounts of everyday action breakdown, emerge: first, whether multiple control systems, each capable of controlling action in different situations, exist; second, whether different forms of damage at the neural level result in conceptually distinct disorders; third, whether semantic/ conceptual knowledge of objects and actions can be dissociated from control mechanisms, and if so what computational principles govern sequential control; and fourth, whether disorders of everyday action should be attributed to a loss of semantic/conceptual knowledge, a malfunction of control, or some combination of the two.
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