Binocular rivalry suppression disrupts recovery from motion adaptation.
Binocular rivalry suppression disrupts recovery from motion adaptation.
复制标题
双眼竞争抑制会破坏运动适应的恢复。
DOI：
10.1017/s0952523800009603
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发表时间：
1992
影响因子：
1.9
通讯作者：
Blake,R
中科院分区：
文献类型：
--
作者：
Wiesenfelder,H;Blake,R
运动后效应（MAE）持续时间较长时，测试期间不立即遵循适应，一种现象称为存储。如果测试目标存在，但由于在储存期间存在呈现给另一只眼睛的竞争目标而使其在现象上不可见，是否会发生MAE储存？我们的实验解决了这个问题。在适应漂移光栅之后，在用静止光栅进行测试之前有一个间隔期。在此期间，适应的眼睛要么立即看到测试目标或被遮挡，而不适应的眼睛要么看到高对比度的竞争对手的目标或被遮挡。因此，采用了四个条件。发现竞争条件（观察光栅和竞争目标）的残留MAE持续时间长于正常MAE条件（观察光栅），并且与储存MAE条件（双眼遮挡）相当。因此，当测试目标由于双眼竞争而变得不可见时，MAE被存储，这表明被抑制的目标在促进MAE的衰减方面是无效的。因此，虽然抑制不会阻止关于自适应光栅的信息到达MAE产生的位置（Lehmkuhle和Fox，1975），但它可以阻止关于测试目标的信息到达存储的MAE的位置。目前的模型将MAE归因于方向选择性皮层神经元的反应性降低（Sutherland，1961; Barlow & Hill，1963）。因此，存储应反映这些适应细胞的差异返回到适应前的反应水平，依赖于适应后的刺激。从我们的研究结果，我们推断，存储并不发生在所有的网站，在运动适应发生。相反，衰减的MAE是依赖于适应后刺激在更高水平的适应，和独立的早期水平。
The motion after-effect (MAE) lasts longer when the test period does not immediately follow adaptation, a phenomenon called storage. Does storage of the MAE occur if the test target is present but rendered phenomenally invisible owing to the presence of a rival target presented to the other eye during the storage period? Our experiment addressed this question. Following adaptation to a drifting grating, an intervening period preceded testing with a stationary grating. During this period, the adapted eye either viewed the test target immediately or was occluded, and the unadapted eye either viewed a high-contrast rival target or was occluded. Thus four conditions were employed. The duration of the residual MAE was found to be longer for the rivalry condition (grating and rival target viewed) than for the normal MAE condition (grating viewed), and comparable to that in the stored MAE condition (both eyes occluded). Thus, the MAE is stored when the test target is rendered invisible due to binocular rivalry, indicating that a suppressed target is ineffective at promoting decay of the MAE. So while suppression does not prevent information about the adapting grating from reaching the site of generation of the MAE (Lehmkuhle & Fox, 1975), it can prevent information about the test target from reaching the site of the stored MAE. Current models attribute the MAE to reduced responsiveness of direction-selective cortical neurons (Sutherland, 1961; Barlow & Hill, 1963). Thus, storage should reflect a differential return of these adapted cells to preadapted response levels, dependent on postadaptation stimulation. From our results we deduce that storage does not occur at all sites at which motion adaptation occurs. Rather, decay of the MAE is dependent on postadaptation stimulation at higher levels of adaptation, and independent at earlier levels.