The ability to adapt is critical to survival and varies between individuals. Adaptation of one motor system may be related to the ability to adapt another. This study sought to determine whether phoria adaptation was correlated with the ability to modify the dynamics of disparity vergence. Eye movements from ten subjects were recorded during dynamic disparity vergence modification and phoria adaptation experiments. Two different convergent stimuli were presented during the dynamic vergence modification experiment: a test stimulus (4 degrees step) and a conditioning stimulus (4 degrees double step). Dynamic disparity vergence responses were quantified by measuring the peak velocity ( degrees /s). Phoria adaptation experiments measured the changes in phoria over a 5-min period of sustained fixation. The maximum velocity of phoria adaptation was determined from an exponential fit of the phoria data points. Phoria and dynamic disparity vergence peak velocity were both significantly modified (P < 0.001). The maximum velocity of phoria adaptation was significantly correlated with the changes in convergence peak velocity (r > 0.89; P < 0.001). There was a strong correlation between the ability to adaptively adjust two different oculomotor parameters: a tonic and dynamic component. Future studies should investigate additional interactions between these parameters, and the ability to adaptively change other oculomotor systems such as the saccadic or smooth pursuit system. Understanding the ability to modify phoria, dynamic disparity vergence, and other oculomotor parameters can yield insights into the plasticity of short-term adaptation mechanisms.
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机译：适应能力对于生存至关重要，并且因人而异。一个电动机系统的适应性可能与适应另一个电动机系统的能力有关。这项研究试图确定隐隐适应是否与修改视差收敛动态相关。在动态视差收敛校正和隐喻适应性实验期间，记录了来自十个对象的眼睛运动。在动态收敛修改实验中，提出了两种不同的会聚刺激：测试刺激（4度步进）和条件刺激（4度双步）。通过测量峰值速度（度/秒）来量化动态视差收敛反应。 Phoria适应性实验测量了持续固定5分钟内的phoripa变化。验光适应的最大速度由验光数据点的指数拟合确定。恐惧症和动态视差收敛峰值速度都得到了显着改善（P <0.001）。隐喻适应的最大速度与收敛峰值速度的变化显着相关（r> 0.89; P <0.001）。自适应调整两个不同的动眼参数：补品和动态成分的能力之间存在很强的相关性。未来的研究应研究这些参数之间的其他交互作用，以及适应性地改变其他眼动系统（如眼跳或顺滑跟踪系统）的能力。了解修改隐喻的能力，动态视差收敛性和其他动眼参数可以洞悉短期适应机制的可塑性。
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