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Identifying the information for the visual perception of relative phase

机译：识别用于相对相位的视觉感知的信息

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摘要

The production and perception of coordinated rhythmic movement are very specifically structured. For production and perception, 0° mean relative phase is stable, 180° is less stable, and no other state is stable without training. It has been hypothesized that perceptual stability characteristics underpin the movement stability characteristics, which has led to the development of a phase-driven oscillator model (e.g., Bingham, 2004a, 2004b). In the present study, a novel perturbation method was used to explore the identity of the perceptual information being used in rhythmic movement tasks. In the three conditions, relative position, relative speed, and frequency (variables motivated by the model) were selectively perturbed. Ten participants performed a judgment task to identify 0° or 180° under these perturbation conditions, and 8 participants who had been trained to visually discriminate 90° performed the task with perturbed 90° displays. Discrimination of 0° and 180° was unperturbed in 7 out of the 10 participants, but discrimination of 90° was completely disrupted by the position perturbation and was made noisy by the frequency perturbation. We concluded that (1) the information used by most observers to perceive relative phase at 0° and 180° was relative direction and (2) becoming an expert perceiver of 90° entails learning a new variable composed of position and speed.
机译：有节奏的节奏运动的产生和感知是非常具体的结构。对于生产和感知，0°平均相对相位是稳定的，180°相对不稳定，并且未经训练就不会稳定其他状态。假设感知稳定特性是运动稳定特性的基础，这导致了相位驱动振荡器模型的发展（例如Bingham，2004a，2004b）。在本研究中，一种新颖的摄动方法被用来探索在节奏运动任务中使用的知觉信息的身份。在这三个条件下，相对位置，相对速度和频率（由模型激发的变量）被有选择地干扰。在这些扰动条件下，有十名参与者执行了判断任务以识别0°或180°，并且经过培训以视觉上辨别90°的八名参与者通过扰动90°显示器来执行任务。在10位参与者中，有7位对0°和180°的辨别没有干扰，但位置摄动完全破坏了90°的辨别力，而频率扰动则对90°的辨别力产生了干扰。我们得出的结论是：（1）大多数观察者用来感知0°和180°相对相位的信息是相对方向，（2）成为90°的专家感知器需要学习一个由位置和速度组成的新变量。

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