Evidence for right-handed feeding biases in a left-handed population

Simple item page
dc.contributor.authorFlindall, Jason W.
dc.contributor.authorStone, Kayla D.
dc.contributor.authorGonzalez, Claudia L. R.
dc.date.accessioned2017-07-19T17:38:45Z
dc.date.available2017-07-19T17:38:45Z
dc.date.issued2015
dc.descriptionSherpa Romeo green journal. Permission to archive accepted author manuscript.en_US
dc.description.abstractWe have recently shown that actions with similar kinematic requirements but different end-state goals may be supported by distinct neural networks. Specifically, we demonstrated that when right-handed individuals reach-to-grasp food items with intent to eat, they produce smaller maximum grip apertures (MGAs) than when they grasp the same item with intent to place it in a location near the mouth. This effect was restricted to right-handed movements; left-handed movements showed no difference between tasks. The current study investigates whether (and to which side) the effect may be lateralized in left-handed individuals. Twenty-one self-identified left-handed participants grasped food items of three different sizes while grasp kinematics were captured via an Optotrak Certus motion capture array. A main effect of task was identified wherein the grasp-to-eat action generated significantly smaller MGAs than did the grasp-to-place action. Further analysis revealed that similar to the findings in right-handed individuals, this effect was significant only during right-handed movements. Upon further inspection however, we found individual differences in the magnitude and direction of the observed lateralization. These results underscore the evolutionary significance of the grasp-to-eat movement in producing population-level right-handedness in humans as well as highlighting the heterogeneity of the left-handed population.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationFlindall, J.W., Stone, K.D., & Gonzalez, C.L.R. (2015). Evidence for right-handed feeding biases in a left-handed population. Laterality, 20(3), 287-305. doi:10.1080/1357650X.2014.961472.en_US
dc.identifier.urihttps://hdl.handle.net/10133/4882
dc.language.isoen_USen_US
dc.publisherTaylor & Francisen_US
dc.publisher.departmentDepartment of Kinesiologyen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.urlhttps://doi.org/10.1080/1357650X.2014.961472
dc.subjectGraspen_US
dc.subjectLeft-handen_US
dc.subjectKinematicsen_US
dc.subjectPrehensionen_US
dc.subjectAsymetriesen_US
dc.subjectRight-handen_US
dc.subjectGrasp-to-eat
dc.subjectGrasp-to-place
dc.subjectGrip
dc.subject.lcshLaterality
dc.subject.lcshLeft- and right-handedness
dc.titleEvidence for right-handed feeding biases in a left-handed populationen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Gonzalez right-hand feeding bias in left handed population.pdf
Size:
793.77 KB
Format:
Adobe Portable Document Format
Description:
Download
Thumbnail Image
Name:
Gonzalez-evidence-for-rightVR.pdf
Size:
431.5 KB
Format:
Adobe Portable Document Format
Description:
REQUEST a copy of the final published version
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Gonzalez, Claudia