Semmlow J L, Pedrono C, Bonnin T
Department of Biomedical Engineering, Rutgers University, Piscataway, NJ.
Ophthalmic Physiol Opt. 1991 Jul;11(3):252-62.
When the peripheral field is degraded, or 'modulated', as occurs with certain corrective lenses, identification of a peripheral image requires combined head and eye movements to place the image within a relatively clear section of the field. In such cases the time required to identify a peripheral object increases systematically. Previous experiments involving severely restricted peripheral fields (slit viewing) have indicated that the increase in identification time is primarily determined by the dynamics of the head movement. Head movement characteristics, in turn, are related to the nature of the peripheral distortion. To describe more complex peripheral distortions, a 'modulation' function is developed which provides a realistic, quantitative measure of the deficit induced by a given distortion. Modification in head movement can be traced directly to the influence of this modulation function.
当周边视野退化或被“调制”时，就像某些矫正镜片的情况那样，识别周边图像需要头部和眼睛的联合运动，以便将图像置于视野中相对清晰的区域内。在这种情况下，识别周边物体所需的时间会系统性增加。先前涉及严重受限周边视野（狭缝观察）的实验表明，识别时间的增加主要由头部运动的动力学决定。反过来，头部运动特征又与周边畸变的性质相关。为了描述更复杂的周边畸变，开发了一种“调制”函数，它提供了由给定畸变引起的缺陷的真实定量测量。头部运动的改变可以直接追溯到这种调制函数的影响。
