Zangemeister W H, Oechsner U, Freksa C
Neurology Department, University of Hamburg, Germany.
Optom Vis Sci. 1995 Jul;72(7):467-77.
In continuation of earlier studies, we recorded gaze movements in patients with hemianopic visual field defects primarily due to stroke. Use of high resolution infrared oculography enabled us to record and analyze a variety of tasks including paradigms of visual search, reading, and scanpath eye movements. The tasks were recorded several times in sequential order. Through these sequences, we observed short-term adaptation, i.e., training effects of eye movement strategies to improve the initially deficient results on the side of the blind hemifield with respect to the relative difficulty of the specific task. This quantitative and statistically confirmed finding adds new evidence for the top-down control of the human scanpath even in hemianopic patients.
作为早期研究的延续，我们记录了主要因中风导致偏盲性视野缺损患者的注视运动。使用高分辨率红外眼动描记术使我们能够记录和分析各种任务，包括视觉搜索、阅读和扫描路径眼动范式。这些任务按顺序记录了几次。通过这些序列，我们观察到了短期适应性，即眼动策略的训练效果，以改善在特定任务相对难度方面，初始时盲半侧视野缺陷一侧的不足结果。这一经过定量和统计学确认的发现为人类扫描路径的自上而下控制增添了新证据，即使在偏盲患者中也是如此。
