Ma Hui-Ing, Hwang Wen-Juh, Lin Keh-Chung
Department of Occupational Therapy & Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Clin Rehabil. 2009 Mar;23(3):229-37. doi: 10.1177/0269215508098896. Epub 2009 Jan 7.
To examine, in a dual-task paradigm, the effect of auditory stimuli on people with Parkinson's disease.
A counterbalanced repeated-measures design.
A motor control laboratory in a university setting.
Twenty individuals with Parkinson's disease. EXPERIMENTAL CONDITIONS: Each participant did two experiments (marching music experiment and weather forecast experiment). In each experiment, the participant performed an upper extremity functional task as the primary task and listened to an auditory stimulus (marching music or weather forecast) as the concurrent task. Each experiment had three conditions: listening to the auditory stimulus, ignoring the auditory stimulus and no auditory stimulus.
Kinematic variables of arm movement, including movement time, peak velocity, deceleration time and number of movement units.
We found that performances of the participants were similar across the three conditions for the marching music experiment, but were significantly different for the weather forecast experiment. The comparison of condition effects between the two experiments indicated that the effect of weather forecast was (marginally) significantly greater than that of marching music.
The results suggest that the type of auditory stimulus is important to the degree of interference with upper extremity performance in people with Parkinson's disease. Auditory stimuli that require semantic processing (e.g. weather forecast) may distract attention from the primary task, and thus cause a decline in performance.
在双任务范式中，研究听觉刺激对帕金森病患者的影响。
平衡重复测量设计。
大学环境中的运动控制实验室。
20名帕金森病患者。
每位参与者进行两项实验（行军音乐实验和天气预报实验）。在每项实验中，参与者执行一项上肢功能任务作为主要任务，并聆听一种听觉刺激（行军音乐或天气预报）作为并行任务。每项实验有三种条件：聆听听觉刺激、忽略听觉刺激和无听觉刺激。
手臂运动的运动学变量，包括运动时间、峰值速度、减速时间和运动单元数量。
我们发现，在行军音乐实验的三种条件下，参与者的表现相似，但在天气预报实验中表现存在显著差异。两项实验条件效应的比较表明，天气预报的效应（略微）显著大于行军音乐的效应。
结果表明，听觉刺激的类型对帕金森病患者上肢表现的干扰程度很重要。需要语义处理的听觉刺激（如天气预报）可能会分散对主要任务的注意力，从而导致表现下降。
