Visual resolution with retinal implants estimated from recordings in cat visual cortex
Visual resolution with retinal implants estimated from recordings in cat visual cortex
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DOI：
10.1016/j.visres.2006.01.034
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发表时间：
2006-09-01
期刊：
影响因子：
1.8
通讯作者：
Walter, Peter
中科院分区：
文献类型：
--
作者：
Eckhorn, Reinhard;Wilms, Marcus;Walter, Peter
我们研究了皮质的反应，电刺激的视网膜使用epi和视网膜下电极的直径为20-100 μ m。通过微电极阵列和光学成像从视觉皮层记录来评估时间和空间分辨率。估计的分辨率与40 ms相似，与1度视角相似。这种每秒25帧的时间分辨率和在大约1米处大约0.8厘米的空间分辨率以及相应地在10米距离处8厘米的空间分辨率对于在日常生活的许多室内和室外情况下有用的物体识别和视觉运动行为似乎是足够的。(c)2006爱思唯尔有限公司保留所有权利。
We investigated cortical responses to electrical stimulation of the retina using epi- and sub-retinal electrodes of 20-100 mu m diameter. Temporal and spatial resolutions were assessed by recordings from the visual cortex with arrays of microelectrodes and optical imaging. The estimated resolutions were similar to 40 ms and similar to 1 degrees of visual angle. This temporal resolution of 25 frames per second and spatial resolution of about 0.8 cm at about I m and correspondingly 8 cm at 10 m distance seems sufficient for useful object recognition and visuo-motor behavior in many in- and out-door situations of daily life. (c) 2006 Elsevier Ltd. All rights reserved.