相关实验视频

Updated: Aug 8, 2026

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

盲人的人工视力:视觉皮层的电刺激为功能性假肢提供了希望

W H Dobelle, M G Mladejovsky, J P Girvin

Science (New York, N.Y.)

|February 1, 1974

概括

脑后皮层的电刺激在盲人患者中产生了光感. 一位患者能够识别字母,为未来的视觉假肢提供了希望.

科学领域:

神经科学是一个神经科学.
生物医学工程生物医学工程
眼科医生眼科眼科

背景情况:

恢复盲人的视力是一个重大挑战.
电刺激为人工视觉提供了一个潜在的途径.

研究的目的:

通过对完全盲人人脑后皮层的电刺激来诱导视觉感知的可行性.
用多电极刺激方法评估模式识别的潜力.

主要方法:

在两个长期失明的志愿者身上,电刺激被应用于脑后皮层.
一个多电极阵列被用来刺激不同的皮质区域.
患者报告主观视觉感觉 (色素),并试图识别模式.

主要成果:

在这两位患者中都引起了离散的光学感觉 (素).
一名患者通过刺激成功地识别了简单的视觉模式,包括字母.
两位患者在刺激后都经历了无事件的恢复.

结论:

脑后皮层的电刺激可以在长时间失明的个体中产生视觉感知.
这种方法对开发功能视觉假肢有前途.
需要进一步的研究来克服视觉假肢技术的现有挑战.

更多相关视频

Methodology for Biomimetic Chemical Neuromodulation of Rat Retinas with the Neurotransmitter Glutamate In Vitro

Methodology for Biomimetic Chemical Neuromodulation of Rat Retinas with the Neurotransmitter Glutamate In Vitro

Published on: December 19, 2017

Computational Modeling of Retinal Neurons for Visual Prosthesis Research - Fundamental Approaches

Computational Modeling of Retinal Neurons for Visual Prosthesis Research - Fundamental Approaches

Published on: June 21, 2022

相关概念视频

Vision

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.