Nishida S, Ashida H
Human and Information Science Laboratory, NTT Communication Science Laboratories, Kanagawa, Japan.
Vision Res. 2000;40(3):265-78. doi: 10.1016/s0042-6989(99)00176-5.
Interocular transfer of the motion aftereffect (MAE) has been extensively investigated for the purpose of analysing the binocularity of the underlying motion mechanism. Previous studies unanimously reported that the transfer of the classical static MAE is partial, but there is a controversy as to whether the transfer of the flicker MAE (MAE measured using counterphase gratings) is partial or perfect. To gain insight into the discrepancy between studies, we investigated whether the interocular transfer of the flicker MAE is influenced by the MAE measurement method, retinal eccentricity and attention. Our results showed that the transfer was perfect or nearly so when the MAE duration was measured in the central visual field with observers paying attention to the adaptation stimulus, but the transfer was partial when the MAE nulling strength was measured, when the MAE duration was measured in the peripheral visual field, or when the observers' attention was distracted by a secondary task. These results not only resolve discrepancies between previous studies, but also suggest that the flicker MAE reflects adaptation at multiple stages in the hierarchical architecture of motion processing.
为了分析潜在运动机制的双眼性，人们对运动后效（MAE）的眼间转移进行了广泛研究。先前的研究一致报告称，经典静态MAE的转移是部分性的，但对于闪烁MAE（使用反相光栅测量的MAE）的转移是部分性还是完全性存在争议。为了深入了解研究之间的差异，我们研究了闪烁MAE的眼间转移是否受MAE测量方法、视网膜偏心度和注意力的影响。我们的结果表明，当在中央视野测量MAE持续时间且观察者关注适应刺激时，转移是完全的或几乎是完全的，但当测量MAE抵消强度时、在周边视野测量MAE持续时间时，或者当观察者的注意力被次要任务分散时，转移是部分性的。这些结果不仅解决了先前研究之间的差异，还表明闪烁MAE反映了运动处理层次结构中多个阶段的适应。
