Behavioral and cortical mechanisms for spatial coding and action planning

There is considerable evidence that the encoding of intended actions in visual space is represented in dynamic, gaze-centered maps, such that each eye movement requires an internal updating of these representations. Here, we review results from our own experiments on human subjects that test the add...

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Vydáno v:Cortex Ročník 44; číslo 5; s. 587 - 597
Hlavní autoři: Medendorp, W. Pieter, Beurze, Sabine M., Van Pelt, Stan, Van Der Werf, Jurrian
Médium: Journal Article
Jazyk:angličtina
Vydáno: Italy Elsevier Srl 01.05.2008
Témata:
Adaptation, Physiological
Cerebral Cortex - physiology
Eye Movements - physiology
Functional Laterality - physiology
Human
Humans
Intention
Parietal cortex
Psychomotor Performance - physiology
Sensorimotor transformations
Space Perception - physiology
Spatial Behavior - physiology
Spatial updating
Human
Sensorimotor transformations
Parietal cortex
Spatial updating
ISSN:0010-9452, 1973-8102
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Shrnutí:There is considerable evidence that the encoding of intended actions in visual space is represented in dynamic, gaze-centered maps, such that each eye movement requires an internal updating of these representations. Here, we review results from our own experiments on human subjects that test the additional geometric constraints to the dynamic updating of these spatial maps during whole-body motion. Subsequently, we summarize evidence and present new analyses of how these spatial signals may be integrated with motor effector signals in order to generate the appropriate commands for action. Finally, we discuss neuroimaging experiments suggesting that the posterior parietal cortex and the dorsal premotor cortex play selective roles in this process.
Bibliografie:ObjectType-Article-1
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ISSN:0010-9452
1973-8102
DOI:10.1016/j.cortex.2007.06.001