Towne R L, Crary M A
Department of Communication Disorders, Southwest Missouri State University, Springfield 65804.
Brain Lang. 1988 Sep;35(1):138-53. doi: 10.1016/0093-934x(88)90105-8.
Verbal reaction time patterns were compared in aphasic adults presenting anterior and posterior left hemisphere lesions. Reaction Times were measured from simultaneous recording of the subjects' verbal responses and electromyographic activity from three oral-facial sites. Total Reaction Time was fractionated into Premotor Time and Motor Time components to assess latencies associated with motor speech planning and execution. The results suggested that only anterior lesions result in deficits in motor speech planning and/or execution while posterior lesion patients perform no differently than normal. The evidence supports traditional concepts regarding apraxia of speech as being associated with frontal lobe lesions.
对患有左半球前部和后部病变的失语成年人的言语反应时间模式进行了比较。通过同时记录受试者的言语反应和来自三个口面部部位的肌电图活动来测量反应时间。总反应时间被分为运动前时间和运动时间成分，以评估与运动言语计划和执行相关的潜伏期。结果表明，只有前部病变会导致运动言语计划和/或执行方面的缺陷，而后部病变患者的表现与正常人无异。这一证据支持了关于言语失用与额叶病变相关的传统观念。
