AI 中文总结
研究指出视觉感知的处理时间与刺激时间常被混淆，提出基于反向相关的Time^2框架，可同时测量这两个时间维度，用于精确表征节律性感知等神经现象。
AI 中文摘要
当我们观察一个物体时，似乎能立即感知到它，但实际并非如此，原因有二：其一，大脑处理到达视网膜的视觉信息需要数百毫秒；其二，我们必须注视物体一定时间才能感知它（通常注视时间为数百毫秒），在此期间视网膜会持续接收视觉信息。这些事实共同表明，视觉信息是随时间同时被处理和接收的。感知的这两个时间维度——我们称之为处理时间和刺激时间——在文献中常被混淆，且实验中通常不会同时考虑这两者。为了获得更完整的视觉感知图景并约束后续的视觉模型，同时考虑并测量这两个时间维度至关重要。我们提出了一种基于反向相关的新方法Time^2，该方法能精确表征多种神经现象，包括节律性感知、预测加工和由粗到细的采样。
英文摘要
Whenever we look at an object, we seem to perceive it immediately. However, this is not the case for two reasons. First, it takes hundreds of milliseconds for the brain to process visual information reaching the retina. Second, we have to look at an object for a certain amount of time to perceive it (and we typically look at it for hundreds of milliseconds) -- during that time, visual information is continuously received on our retinas. These facts together imply that visual information is both processed and received through time. These two temporal facets of perception, which we term processing time and stimulus time, are often conflated in the literature. Moreover, processing time and stimulus time are usually not considered together in experiments. Here, we argue that, to obtain a more complete portrait of visual perception and constrain further models of vision, it is essential to consider and measure both temporal facets simultaneously. We present a new method designed to do so that is based on reverse correlation: Time^2. We show that this method allows us to precisely characterize many neural phenomena, including rhythmic perception, predictive processing and coarse-to-fine sampling.
