Abstract
WHEN interacting with objects, the pattern of movements is influenced by such object characteristics as size and position1–4. Little is known about the effect of higher level categorical encoding of objects upon movements. Here we present evidence for an approval-for-action process which takes into account such encoding. For the brain-damaged subject L.P., the ability to complete actions involving two objects in central vision is influenced by the semantic or functional relationship between the objects. Even though she perceives only one object, she can integrate two related objects into a coordinated action. If the objects are not related she is unable to integrate them into a single motor act. We propose that selection-for-action systems5 include processes which gate conceptually the behavioural disposition to action.
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Castiello, U., Scarpa, M. & Bennett, K. A brain-damaged patient with an unusual perceptuomotor deficit. Nature 374, 805–808 (1995). https://doi.org/10.1038/374805a0
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DOI: https://doi.org/10.1038/374805a0
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