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Visual Behavior and Planning for Object Manipulation: Gaze Patterns for Altered Center of Mass

abstract: The interaction between visual fixations during planning and performance in a

dexterous task was analyzed. An eye-tracking device was affixed to subjects during

sequences of null (salient center of mass) and weighted (non salient center of mass) trials

with unconstrained precision grasp. Subjects experienced both expected and unexpected

perturbations, with the task of minimizing object roll. Unexpected perturbations were

controlled by switching weights between trials, expected perturbations were controlled by

asking subjects to rotate the object themselves. In all cases subjects were able to

minimize the roll of the object within three trials. Eye fixations were correlated with

object weight for the initial context and for known shifts in center of mass. In subsequent

trials with unexpected weight shifts, subjects appeared to scan areas of interest from both

contexts even after learning present orientation. / Dissertation/Thesis / Masters Thesis Biomedical Engineering 2017

Identiferoai:union.ndltd.org:asu.edu/item:45580
Date January 2017
ContributorsSmith, Michael David (Author), Santello, Marco (Advisor), Buneo, Christopher (Committee member), Schaefer, Sydney (Committee member), Arizona State University (Publisher)
Source SetsArizona State University
LanguageEnglish
Detected LanguageEnglish
TypeMasters Thesis
Format27 pages
Rightshttp://rightsstatements.org/vocab/InC/1.0/, All Rights Reserved

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