Quantitative examination of cerebellar ataxia in the upper limbs.

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  • 上肢における小脳性運動失調の定量的解析の試み
  • ジョウシ ニ オケル ショウノウセイ ウンドウ シッチョウ ノ テイリョウテキ

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Abstract

In order to evaluate the cerebellar ataxia (Dysmetria, Decomposition) quantitatively in upper extremities, the pointing test (PT), the line drawing test (LDT) and the zig zag trace test (ZZTT) were made on patients with spino-cerebellar degeneration (SCD) and controls using a personal computer equipped with a digitizer.<br>As the results, the dysmetria (displacement errors from the targets) in PT and LDT significantly dicreased in patients with SCD compared to those in normal controls. The decomposition (area of displacement errors between the model wave pattern and the trace of patient) in ZZTT also significantly increased in the patients with SCD. The degree of such increase in the parameters of dysmetria and decomposition more augmented in the severe cases compared to those in the mild cases.<br>From these results, it was suggested that these tests were usefull as the methods which quantatively assess the degree of disturbances in the motor product (dysmetria) and the motor process (decomposition).

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