腦螢幕上之左向動作對單側忽略病人之效應

目的：探討在電腦螢幕上提供左側之視覺刺激及導引病患右手之左向動作，是否可以有效改善病患在電腦螢幕上之線二等分測驗之表現。方法：採用重覆施測中和平衡的研究設計，共十二位右腦傷之病患參與本研究，每一病患經由不同順序完成三種不同情境之測試－情境A：沒有導引；情境B：提供左側之視覺刺激；情境C：再加上右手之左向動作。採用SPSS統計軟體之重覆施測變異數分析模式。結果：病患在情境C之線二等分之偏誤值比在情境A或情境B中小，並具有統計上之顯著差異，其效應值(r)達高度效應（情境C/情境A間r＝0.68，情境C/情境B間r＝0.53）；病患在情境A的表現與情境B比較，其線二等分之偏誤值未達到統計上之顯著差異，但其效應值r仍達0.39，屬於中度效應。結論：在電腦螢幕上提供左側視覺刺激加上右手之左向動作之情境，可有效降低右側腦傷病患之左側忽略現象，單純提供左側視覺刺激之情境對於降低右側腦傷病患之左側忽略現象仍具有中度效應。惟解釋本研究結果時，仍有限制需考量。
Purpose: To evaluate the effects of visual cueing and left-sided screen movement on performance of neglect patients on a computerized line bisection test. Method: Repeated measure counter-balance method was used to evaluate the performance of twelve patients with right brain damage and co-morbid left neglect on a line bisection test. Each patient performed different sequences of task in three contexts: (A) no cueing, (B) left visual cueing, and (C) left visual cueing plus left-sided movement. The repeated measure ANOVA analysis model was used to calculate the differences in patient performances in three different contexts. Results: We found significant differences in bias of line bisection tests existed between Context C and A and between context C and B but not between Context A and B. The effect size r between these two contexts reached to 0.39. Conclusion: Our study suggests that the unilateral neglect training may be beneficial for patients with unilateral neglect in the area of visual cuing especially plus where there is left-sided screen movement.