Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham, UK.
Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham, UK.
Trends Cogn Sci. 2021 Dec;25(12):1033-1044. doi: 10.1016/j.tics.2021.08.008. Epub 2021 Sep 17.
Humans have a remarkable ability to efficiently explore visual scenes and text using eye movements. Humans typically make eye movements (saccades) every ~250 ms. Since saccade initiation and execution take 100 ms, this leaves only ~150 ms to recognize the fixated object (or word) while simultaneously previewing candidates for the next saccade goal. We propose a pipelining mechanism where serial processing occurs within a specific brain region, whereas parallel processing occurs across different brain regions. The mechanism is timed by alpha oscillations that coordinate the saccades, visual recognition, and previewing in the cortical hierarchy. Consequently, the neuronal mechanism supporting natural vision and saccades must be studied in unison to uncover the brain mechanisms supporting visual exploration and reading.
人类具有高效地通过眼球运动探索视觉场景和文本的非凡能力。人类通常每 250 毫秒左右进行一次眼球运动（眼跳）。由于眼跳的起始和执行需要 100 毫秒，因此只剩下大约 150 毫秒的时间来识别注视的物体（或单词），同时预览下一个眼跳目标的候选对象。我们提出了一种流水线机制，其中串行处理发生在特定的大脑区域内，而并行处理发生在不同的大脑区域之间。该机制由 alpha 振荡定时，协调皮质层次中的眼跳、视觉识别和预览。因此，支持自然视觉和眼跳的神经元机制必须协同研究，以揭示支持视觉探索和阅读的大脑机制。
