Emulation of retinal cell responses during fixational eye movements
Emulation of retinal cell responses during fixational eye movements
复制标题
模拟注视眼球运动期间视网膜细胞的反应
DOI：
10.1587/elex.7.184
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发表时间：
2010
影响因子：
0.8
通讯作者：
T. Yagi
中科院分区：
文献类型：
--
作者：
J. Hasegawa;T. Yagi
本文实时模拟了眼球注视运动时视网膜回路的神经活动。采用现场可编程门阵列（FPGA）芯片实现的数字逻辑电路，并将其安装在预先设计的视网膜模拟器上，该模拟器由具有双层电阻网络的96 × 96像素光电二极管和数字计算机组成。模拟的眼球运动很好地再现了注视性眼球运动漂移成分的时间特性。本研究开发的系统可以模拟眼球固定运动时视网膜对自然场景的反应，可以真实有效地分析视网膜的视觉功能。
In this paper, a real-time simulation of neural activities of the retinal circuits during fixational eye movements is presented. The fixational eye movements were emulated using a digital logic circuit implemented on a field-programmable gate array (FPGA) chip and installed on a previously designed retina emulator that consists of 96 × 96 pixels of photodiodes with double-layered resistive networks and a digital computer. The emulated eye movements well reproduced the temporal properties of the drift component of fixational eye movements. The system developed in the present study can emulate retinal responses to natural scenes during fixational eye movements, and it can be used to realistically and effectively analyze the visual functions of the retina.