Verbalizations Affect Visuomotor Control in Hitting Objects to Distant Targets

Frontiers in Psychology
Raimey OlthuisSimone R Caljouw

Abstract

There is a long-standing proposal for the existence of two neuroanatomically and functionally separate visual systems; one supported by the dorsal pathway to control action and the second supported by the ventral pathway to handle explicit perceptual judgments. The dorsal pathway requires fast access to egocentric information, while the ventral pathway primarily requires allocentric information. Despite the evidence for functionally distinct systems, researchers have posited important interactions. This paper examines evidence to what degree the interaction becomes more important when target-identity, the perception of which is supported by the ventral stream, is verbalized during the execution of a target-directed far-aiming movement. In the experiment reported here participants hit balls toward distant targets while concurrently making explicit perceptual judgments of target properties. The endpoint of a shaft served as the target, with conditions including illusory arrow fins at the endpoint. Participants verbalized the location of the target by comparing it to a reference line and calling out "closer" or "further" while propelling the ball to the target. The impact velocity at ball contact was compared for hits toward three...Continue Reading

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Citations

Dec 15, 2020·Consciousness and Cognition·Raimey OlthuisSimone Caljouw

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