Alterations in transport path differentially affect temporal and spatial movement parameters

Experimental Brain Research
J AlbertsGeorge E Stelmach

Abstract

Many studies have examined the coordination of reach-to-grasp movements. However, there is debate regarding the mechanism of coordination between the transport and grasp components. The current study investigated the stability of temporal and spatial measures for reaches in which transport path was altered early or late in the reaching action. Transport alteration was accomplished by placing an obstacle either 10 cm (near) or 20 cm (far) from the hand starting position. Obstacle location affected the formation of transport path such that maximum wrist elevation coincided with the location of the obstacle. Kinematic analyses revealed that reaches over the near obstacle significantly prolonged transport time and time to maximum velocity compared with reaches over the far obstacle. A similar pattern of results was observed for the grasp component; reaches over the near obstacle resulted in a prolongation of grip duration, time to maximum aperture, and time to maximum opening and closing velocity. Grip closing velocity was decreased in the obstacle conditions. These results confirm findings from earlier studies that have shown that changes in the transport component affect grasp formation. A spatial and temporal analysis of grasp o...Continue Reading

Citations

Jul 3, 2004·Experimental Brain Research·Sherry WattsJon Hore
Nov 25, 2005·Experimental Brain Research·M K RandG E Stelmach
Mar 28, 2006·Experimental Brain Research·Miya K RandGeorge E Stelmach
May 4, 2007·Experimental Brain Research·Miya K RandGeorge E Stelmach
Apr 29, 2008·Experimental Brain Research·Miya K RandGeorge E Stelmach
Sep 23, 2009·Experimental Brain Research·Fang Yang, Anatol G Feldman
Nov 26, 2009·Experimental Brain Research·Constanze Hesse, Heiner Deubel
Aug 14, 2012·Experimental Brain Research·Christian SeegelkeThomas Schack
Jan 12, 2005·Journal of Motor Behavior·Miya K Rand, George E Stelmach
Apr 28, 2009·Human Movement Science·Constanze Hesse, Heiner Deubel
Dec 2, 2011·Human Movement Science·Raoul M BongersMarc Jeannerod
Jul 25, 2015·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Sahana N KukkeDiane L Damiano
Apr 10, 2013·Neurorehabilitation and Neural Repair·Paulette van VlietAlan Miles Wing
Aug 7, 2009·Journal of Neurophysiology·Toshitaka Kimura, Hiroaki Gomi
May 25, 2005·Journal of Neurophysiology·Jon Hore, Sherry Watts
Jul 25, 2019·Journal of Neurophysiology·Jeroen B J SmeetsEli Brenner

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