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生理学家Emil du Bois-Reymond于1849年发现鲤鱼眼视神经断端和眼前部之间存在着电位差,即本文所述的角膜-眼底电位,从而奠定了眼部的电学基础。后来证实脊椎动物,该电位差在眼前部为正极;但在非脊椎动物,则极性相反,眼前部为负极。 Dewar(1877)测量了人眼的角膜-眼底电位,角膜侧为正,眼前极和后极之间的电位差约为几毫伏,他还发现光可诱发该电位发生变化。
Physiologist Emil du Bois-Reymond discovered in 1849 that there was a potential difference between the optic nerve end of the carp and the anterior segment of the eye, the cornea-fundus potential described in this article, thus establishing the electrical basis for the eye. Later confirmed vertebrates, the potential difference in the anterior eye positive; but in invertebrates, the opposite polarity, anterior eye negative. Dewar (1877) measured the cornea-fundus potential of the human eye with a positive corneal side and a potential difference of about several millivolts between anterior and posterior poles. He also found that light can induce changes in this potential.