Demb Jonathan B
Department of Neuroscience, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
Neuron. 2002 Dec 5;36(5):781-3. doi: 10.1016/s0896-6273(02)01100-5.
The retina adapts to average light intensity but also to the range of light intensities (contrast). A study by Baccus and Meister, in this issue of Neuron, identifies three ways that ganglion cells and interneurons adapt to high contrast: shorten integration time, reduce gain, and depolarize. Only the depolarization decays, over tens of seconds.
视网膜不仅能适应平均光强度，还能适应光强度范围（对比度）。巴克斯和迈斯特在本期《神经元》杂志上发表的一项研究，确定了神经节细胞和中间神经元适应高对比度的三种方式：缩短整合时间、降低增益和去极化。只有去极化会在数十秒内衰减。
