Linking cognitive and reaching trajectories via intermittent movement control

Title: Linking cognitive and reaching trajectories via intermittent movement control
Creator: Friedman, Jason; Brown, Scott; Finkbeiner, Matthew
Relation: ARC.DP0880806 and ARC.DP0878588
Relation: Journal of Mathematical Psychology Vol. 57, Issue 3-4, p. 140-151
Publisher Link: http://dx.doi.org/10.1016/j.jmp.2013.06.005
Publisher: Academic Press
Resource Type: journal article
Date: 2013
Description: Theories of decision-making have traditionally been constrained by reaction time data. A limitation of reaction time data, particularly for studying the temporal dynamics of cognitive processing, is that they index only the endpoint of the decision making process. Recently, physical reaching trajectories have been used as proxies for underlying mental trajectories through decision space. We suggest that this approach has been oversimplified: while it is possible for the motor control system to access the current state of the evidence accumulation process, this access is intermittent. Instead, we demonstrate how a model of arm movements that assumes intermittent, not continuous, access to the decision process is sufficient to describe the effects of stimulus quality and viewing time in curved reaching movements.
Subject: decision making; diffusion model; reaction times; arm movements; submovements
Identifier: http://hdl.handle.net/1959.13/1300396
Identifier: uon:20064
Identifier: ISSN:0022-2496
Language: eng
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