Object motor representation and reaching-grasping control

Neuropsychologia
M Gentilucci

Abstract

The following two competing hypotheses were tested in the present study. Is grasp guided by multiple representations of a single object, each of which codes a different grasp motor act according to the physical properties of that item? Conversely, is grasp guided by a single representation that codes all the possible affordances enabled by the object? Subjects reached different objects, but the object part used by subjects to grasp them was identical. In experiments 1 and 2, two familiar objects (fruits) which varied for size and shape were presented. Subjects grasped their stalks whose size and shape were equal. In experiments 3-7 the presented objects were geometrical solids, which varied, respectively, for weight, volume, intrinsic height, centre of mass and shape. Nevertheless, in all experiments the object portion where subjects' fingers grasped it had the same physical features. Finally, experiment 8 was a control experiment in which subjects reached and grasped equal handles of bells of the same shape, but different size. Volume, shape, and familiarity of the object influenced the grasp kinematics, even if the features of the grasped object part did not change. Variation in intrinsic object height and weight influenced f...Continue Reading

References

Jan 1, 1991·Experimental Brain Research·L S Jakobson, M A Goodale
Sep 19, 1998·Electroencephalography and Clinical Neurophysiology·G RizzolattiM Matelli
Apr 20, 2001·Experimental Brain Research·M GentilucciM Gangitano

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Citations

Feb 21, 2006·Experimental Brain Research·Lari VainioEd Symes
Dec 16, 2006·Experimental Brain Research·Lari VainioEd Symes
Feb 3, 2007·Experimental Brain Research·Filippo BarbieriMaurizio Gentilucci
Jan 2, 2010·Experimental Brain Research·Barbara F M MarinoAngelo Maravita
May 18, 2011·Experimental Brain Research·Kenneth F ValyearJody C Culham
Jul 8, 2010·Surgical Endoscopy·Carol E ReileyGregory D Hager
Aug 21, 2003·Acta Psychologica·Frouke Hermens, Stan Gielen
Apr 22, 2014·Experimental Brain Research·Elisa De StefaniMaurizio Gentilucci
Mar 14, 2012·Experimental Brain Research·Elisa De StefaniMaurizio Gentilucci
May 31, 2007·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Jason Friedman, Tamar Flash
Sep 4, 2007·Brain and Cognition·Lari VainioRob Ellis
Jun 26, 2003·The European Journal of Neuroscience·J GrèzesR E Passingham
Jan 31, 2004·The European Journal of Neuroscience·Maurizio GentilucciSilvia Stefanini
Feb 1, 2006·Developmental Science·Elizabeth A WareJudy S Deloache
Feb 4, 2010·Developmental Science·Elizabeth A WareJudy S DeLoache
Sep 29, 2004·Trends in Cognitive Sciences·Scott Glover
Jun 14, 2015·Experimental Brain Research·Christian SeegelkeMatthias Weigelt
May 15, 2007·NeuroImage·Uta WolfenstellerD Yves von Cramon
May 11, 2011·Clinical Biomechanics·Tamara SupukGregorij Kurillo
Sep 4, 2009·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Elena DapratiFrancesco Lacquaniti
Sep 16, 2005·Journal of Neurophysiology·Carolyn R MasonTimothy J Ebner
Mar 13, 2003·Experimental Brain Research·Maurizio Gentilucci
Jul 25, 2019·Journal of Motor Behavior·Marie MartelAlice Catherine Roy
Apr 15, 2020·Scientific Reports·Maria Francesca GigliottiYann Coello
Aug 6, 2019·Frontiers in Psychology·Irene SennaClaudio Brozzoli
Feb 15, 2020·Scientific Reports·Doriana De MarcoMaddalena Fabbri-Destro
Jun 24, 2017·Journal of Motor Behavior·Ida Egmose, Simo Køppe
Nov 19, 2019·Vision·Sharon ScraftonBenjamin W Tatler
Feb 6, 2004·Journal of Neurophysiology·Carolyn R MasonTimothy J Ebner
Jun 10, 2021·Journal of Neurophysiology·Kunpeng YaoAude Billard
Feb 6, 2010·The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association·Kinsuk K MaitraMartin S Rice

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