Sigmundsson H, Hansen P C, Talcott J B
Research Group for Child Development, Department of Sport Sciences, Norwegian University of Science and Technology, Trondheim 7497, Norway.
Behav Brain Res. 2003 Feb 17;139(1-2):123-9. doi: 10.1016/s0166-4328(02)00110-9.
Visual processing by 10-year-old children diagnosed on the basis of standardised tests as having developmental 'clumsiness' syndrome, and by a control group of children without motor difficulties, was tested using three different psychophysical tasks. The tasks comprised a measure of global motion processing using a dynamic random dot kinematogram, a measure of static global pattern processing where the position of the target was randomised, and a measure of static global pattern processing in which the target position was fixed. The most striking finding was that the group of clumsy children, who were diagnosed solely on the basis of their motor difficulties, were significantly less sensitive than the control group on all three tasks of visual sensitivity. Clumsy children may have impaired visual sensitivity in both the dorsal and ventral streams in addition to their obvious problems with motor control. These results support the existence of generalised visual anomalies associated with impairments of cerebellar function.
通过三项不同的心理物理学任务，对根据标准化测试被诊断为患有发育性“笨拙”综合征的10岁儿童以及一组无运动困难的对照组儿童的视觉处理能力进行了测试。这些任务包括使用动态随机点运动图来测量全局运动处理能力、目标位置随机化的静态全局模式处理能力以及目标位置固定的静态全局模式处理能力。最显著的发现是，仅根据运动困难被诊断出的笨拙儿童组，在所有三项视觉敏感度任务上的敏感度都明显低于对照组。除了明显的运动控制问题外，笨拙儿童的背侧和腹侧视觉通路的视觉敏感度可能也受损。这些结果支持了与小脑功能受损相关的广泛性视觉异常的存在。
