Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/20300
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Tapping, grasping and aiming in ideomotor apraxia
Authors: Ietswaart, Magdalena
Carey, David P
Della, Sala Sergio
Contact Email: magdalena.ietswaart@stir.ac.uk
Keywords: kinematics
prehension
reaching
ipsilesional hand
left hemisphere
stroke
Issue Date: 2006
Publisher: Elsevier
Citation: Ietswaart M, Carey DP & Della Sala S (2006) Tapping, grasping and aiming in ideomotor apraxia, Neuropsychologia, 44 (7), pp. 1175-1184.
Abstract: Very few studies have investigated sensorimotor control in apraxia using tasks that differ in movement complexity. Nevertheless, there is some evidence to suggest that spontaneous behaviour, although relatively preserved, can be rather clumsy or awkward, and that patients with ideomotor apraxia may have subtle kinematic abnormalities in movements made in the laboratory. It remains unclear whether patients with ideomotor apraxia perform normally on movements such as visually guided aiming, that may not depend on higher-order, more cognitive, processes and that are relatively unguided by overlearned contexts. In this study, three different sensorimotor tasks were given to the same sample of patients with quantified apraxic disturbance. Finger tapping, goal-directed grasping and aiming with and without visual feedback were examined in these patients. A clear dissociation was found between grossly impaired gesture imitation and intact motor programming of goal-directed movements with visual feedback. Apraxic patients were, however, impaired on aiming movements without visual feedback, suggesting that apraxia is associated with an increased reliance on integration of online visual information with feedforward/feedback somatosensory and motor signals. Furthermore, patients were impaired on single finger tapping which was a surprisingly good predictor of apraxia severity.
Type: Journal Article
URI: http://hdl.handle.net/1893/20300
DOI Link: http://dx.doi.org/10.1016/j.neuropsychologia.2005.10.003
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Psychology
University of Aberdeen
University of Aberdeen

Files in This Item:
File Description SizeFormat 
Ietswaart et al_Neuropsychologia 2006.pdf353.53 kBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.