Experimental study on the work road of sign language interpretation

本研究以20名专业手语翻译人员为研究对象，对5名健康者（ⅰ组）、9名轻度强迫症患者（ⅱ组）和6名中度强迫症患者（ⅲ组）进行了从言语到手语的翻译工作量的实验评估。每5 min进行两种测试和主观症状检查，一种是观察右肘位置和轨迹的明确的手指拼写测试，阻塞和解释错误和不必要的运动，另一种是15秒的直举手臂测试，测量上斜方肌肌电体征的均方根（RMS）和平均功率频率（MPF）。局部肌肉症状和他/她自己的解释恶化的感觉在实验早期增加，在III组更明显。右肘体位和位置的变化提示第三组存在疲劳倾向，第一组存在用力对抗疲劳的倾向，第二组处于两组之间的中间状态，但这些变化均不显著。肌电图显示RMS升高、MPF降低的趋势：III组RMS明显升高，而III组未见MPF降低。阻滞、判读错误、不必要运动的发生率无明显趋势。

The work load of interpretation from speech to sign language was evaluated experimentally with 20 professional sign language interpreters, consisted of 5 healthy (Group I) , 9 slightly affected with OCD (Group II) , and 6 moderately affected (Group III).Two kinds of tests and subjective symptom checking were conducted every 5 min that were a definite finger spelling test to observe the position and locus of the right elbow, blocking and interpretation error and unnecessary motion, and a 15-sec straight forward arm-holding test to measure the root mean square (RMS) and mean power freguency(MPF)of EMG signs in the upper trapezius muscles.Localized muscle symptoms and a feeling of deterioration of his/her own interpretation increased in the early stage of the experiment, more markedly in Group III.Change of position and locus of the right elbow suggested the exist of a tendency to fatiguein Group III,and the exist of a tendency to exertion against to fatigue in Group I,and in Group II the midway state between this two groups, though none of these changes was significant. In EMG,a tendency to RMS increase and MPF decrease were observed : RMS increase was marked and significant in Group III,but no MPF decrease was seen in Group III.The incidence of Blocking, interpretation error, and unnecessary motion did not show any definite tendency.