Vision Science Graduate Group, University of California, Berkeley, Berkeley, California, USA.
Nat Neurosci. 2010 Feb;13(2):156-7. doi: 10.1038/nn.2465. Epub 2009 Dec 20.
Visual resolution decreases rapidly outside of the foveal center. The anatomical and physiological basis for this reduction is unclear. We used simultaneous adaptive optics imaging and psychophysical testing to measure cone spacing and resolution across the fovea, and found that resolution was limited by cone spacing only at the foveal center. Immediately outside of the center, resolution was worse than cone spacing predicted and better matched the sampling limit of midget retinal ganglion cells.
视敏度在中央凹以外迅速下降。这种减少的解剖学和生理学基础尚不清楚。我们使用同时自适应光学成像和心理物理测试来测量中央凹内的锥体细胞间距和分辨率，发现只有在中央凹中心，分辨率才受到锥体细胞间距的限制。在中心的外部，分辨率比锥体细胞间距预测的要差，与小型视网膜神经节细胞的采样限制更匹配。
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