Doslak M J, Healey E C, Riese K
Invest Ophthalmol Vis Sci. 1986 Sep;27(9):1410-4.
As a consequence of recent inquiries into the brainstem activity of stutterers, saccades and pursuit were evaluated in stutterers and their matched normals while silent and talking. No ocular motor instabilities or aberrations caused by speech were found. Saccadic latencies and gains for the stutterers were normal, but peak velocities were higher and durations were shorter. This finding is consistent with hypotheses of speech dysfluency proposed by others. The gains of these fast saccades were kept normal by an adaptive decrease in the duration of the neural pulse producing the saccade. It is proposed that these fast saccades are a result of increased excitatory input to the burst cells in the brainstem.
由于最近对口吃者脑干活动的研究，对口吃者及其匹配的正常人在安静和说话时的扫视和跟踪进行了评估。未发现由言语引起的眼球运动不稳定或异常。口吃者的扫视潜伏期和增益正常，但峰值速度较高，持续时间较短。这一发现与其他人提出的言语不流畅假说一致。这些快速扫视的增益通过产生扫视的神经脉冲持续时间的适应性缩短而保持正常。有人提出，这些快速扫视是脑干爆发细胞兴奋性输入增加的结果。
