{"pk":25995,"title":"Brain activities related to target- versus trajectory-based strategies in\nvisually-guided movement control: A functional MRI study","subtitle":null,"abstract":"Previous studies on movement control modulated target size or distance in order to investigate the mechanism\nunderlying control strategies. While these elucidated the contribution of targets in the control, how trajectory itself influences\nmovement strategy has received little attention. Here, using event-related fMRI, we examined neural processes of trajectorybased\nmovement control as well as those of target-based control; we manipulated the focus of movement control by varying\nthe size of a target (target-based control) or the window through which the movement had to pass (trajectory-based control).\nThe brain activation maps showed that the increase in task difficulty with target-based control was associated with greater\nactivation at right parietal and ventrolateral occipital regions, while that with trajectory-based control was correlated with more\nextensive activation at medial frontal and ventromedial occipital regions. These differential brain activities indicate that the\nneural mechanisms for target selection and trajectory control are distinct during visually-guided movements.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[],"section":"Member Abstracts","is_remote":true,"remote_url":"https://escholarship.org/uc/item/54n9f0sf","frozenauthors":[{"first_name":"Je-Kwang","middle_name":"","last_name":"Ryu","name_suffix":"","institution":"Seoul National University","department":""},{"first_name":"Hee","middle_name":"Sun","last_name":"Eum","name_suffix":"","institution":"Seoul National University","department":""},{"first_name":"Hyoung-Min","middle_name":"","last_name":"Lee","name_suffix":"","institution":"Seoul National University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2015-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/25995/galley/15619/download/"}]}