PMID: 8950006Nov 1, 1996Paper

Visuomotor learning in cerebellar patients

Behavioural Brain Research
Dagmar TimmannJ R Bloedel

Abstract

The aim of the present study was to demonstrate that patients with pathology affecting substantial regions of the cerebellum can improve their performance in a series of two-dimensional tracing tasks, thus supporting the view that this type of motor behavior can be acquired even when the integrity of this structure is compromised. Eight patients with chronic, isolated cerebellar lesions and eight age- and sex-matched healthy controls were tested. Three patients had mild, five had moderate upper limb ataxia. The experiment was divided into two parts. In the first, subjects traced an irregularly shaped outline over 20 consecutive trials ('Trace 1' task). Next, subjects were asked to redraw the object without any underlying template as a guide ('Memory 1' task). In the second part of the study, subjects were asked to trace a different, irregularly shaped outline over 20 consecutive trials ('Trace 2' task). Next, they were required to redraw it by memory with its axis rotated 90 degrees ('Memory 2' task). In each of the memory tasks the template was placed over the drawn image after each trial and shown to the subjects. The error of performance was determined by calculating three different measurements, each focused on different as...Continue Reading

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Citations

Dec 29, 2000·Experimental Brain Research·M K RandJ R Bloedel
May 4, 2001·Behavioural Brain Research·C C JoyalR Lalonde
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Feb 16, 2011·Clinical Rehabilitation·Jon Marsden, Chris Harris
Mar 6, 2002·Journal of Neurophysiology·Catherine E Lang, Amy J Bastian

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