Pierrot-Deseilligny C, Rosa A, Masmoudi K, Rivaud S, Gaymard B
Service de Neurologie, Hôpital de la Salpêtrière, Paris, France.
J Neurol Neurosurg Psychiatry. 1991 Dec;54(12):1106-9. doi: 10.1136/jnnp.54.12.1106.
A 70 year old patient with a small haematoma largely restricted to the area of the right superior and inferior colliculi is reported. Eye movements were electro-oculographically recorded 17 and 80 days after the onset of the haematoma. At the first examination, latency of lateral reflexive visually-guided saccades was asymmetrical, both in the gap task (central fixation point switched off 200 ms before the onset of the lateral target) and in the overlap task (central fixation point remaining switched on). Furthermore, latency of leftward saccades in the overlap task was increased, and accuracy of these saccades was impaired, at both examinations. In the immobility task (fixation straight ahead while lateral targets suddenly occurred) and in the anti-saccade task (saccade made away from the lateral target), the percentages of errors (saccades made to the target) were high at the first examination, and noticeably lower at the second. These results suggest that the superior colliculus plays an important role both in the triggering and inhibition of reflexive visually-guided saccades.
报告了一名70岁患者，其小血肿主要局限于右侧上丘和下丘区域。在血肿发作后17天和80天用电眼震图记录了眼球运动。在首次检查时，无论是在间隙任务（在外侧目标出现前200毫秒关闭中央固定点）还是重叠任务（中央固定点保持开启）中，外侧反射性视觉引导扫视的潜伏期都是不对称的。此外，在两次检查中，重叠任务中向左扫视的潜伏期都增加了，并且这些扫视的准确性受到损害。在静止任务（当外侧目标突然出现时向前直视固定）和反扫视任务（向远离外侧目标的方向进行扫视）中，首次检查时错误（向目标进行的扫视）的百分比很高，而在第二次检查时明显较低。这些结果表明，上丘在反射性视觉引导扫视的触发和抑制中都起着重要作用。
