Andrews G, Quinn P T, Sorby W A
J Neurol Neurosurg Psychiatry. 1972 Jun;35(3):414-8. doi: 10.1136/jnnp.35.3.414.
Over the past decade research has suggested that stutterers have bilateral cerebral motor or auditory speech areas. Three typical adult stutterers showed normal unilateral left cerebral dominance for speech on the intracarotid sodium amylobarbitone (amytal) test, but one 'dysphatic' stutterer had bilateral cortical speech representation. The latter is a very rare finding in right handed individuals and presumably is a consequence of the head injury induced aphasia that preceded the onset of stuttering.
在过去十年中,研究表明口吃者的大脑运动或听觉言语区域是双侧性的。三名典型的成年口吃者在颈动脉注射异戊巴比妥钠(阿米妥)试验中表现出正常的左侧大脑半球单侧言语优势,但一名“言语困难型”口吃者具有双侧皮质言语表征。后者在右利手个体中是非常罕见的发现,推测是口吃发作之前头部受伤导致失语的结果。