Sensory Mechanisms of the Retina
Author : Ragnar Granit
Publisher :
Page : 444 pages
File Size : 12,83 MB
Release : 1963
Category : Electroretinography
ISBN :
Author : Ragnar Granit
Publisher :
Page : 444 pages
File Size : 12,83 MB
Release : 1963
Category : Electroretinography
ISBN :
Author : Ragnar Granit
Publisher :
Page : 412 pages
File Size : 42,53 MB
Release : 1963
Category :
ISBN :
Author : Ragnar Granit
Publisher :
Page : 0 pages
File Size : 45,53 MB
Release : 1963
Category : Electroretinography
ISBN :
Author : Thor Eysteinsson
Publisher : Frontiers Media SA
Page : 538 pages
File Size : 15,87 MB
Release : 2022-03-09
Category : Science
ISBN : 2889746348
Author : Helga Kolb
Publisher :
Page : pages
File Size : 10,65 MB
Release : 2007
Category :
ISBN :
Author : Ragnar Granit
Publisher :
Page : 412 pages
File Size : 36,21 MB
Release : 1947
Category :
ISBN :
Author :
Publisher : Springer Science & Business Media
Page : 124 pages
File Size : 49,4 MB
Release : 2012-12-06
Category : Medical
ISBN : 3642691633
The study of the functional organization of the first synapse of the centripetal visual pathway at the outer plexiform layer level (OPL) ought to be made through the application of combined histological, electrophysiological, and neurochemical techniques. A large amount of new evidence has been accumu lated in the past 20 years on the structure of the retina and on the electrical responses of retinal cells to light stimulus. Also, recently, many substances considered as neurotransmitters in the brain have been found in the retina. The goal of the study of retinal function is to integrate the data obtained by structural and electrophysiological techniques and to identify and determine the role played by neurotransmitters or neuromodulators in the function of the retina. In this study it is important to realize the morphological and biochemical diversi ty displayed by the visual cells in the vertebrate retina which, according to Cresci telli (1972), has been produced "through the interaction of natural selection with diversity in the photic environment." The evidence obtained shows that bipolar and especially horizontal cells, closely related to visual cells, display morphologi cal and probably biochemical differences among classes, genus, and even species according to the photic environment. These differences give peculiarities to the organization of the OPL, which must be taken into account when studying a par ticular retina with electrophysiological or neurochemical techniques.
Author : H. Autrum
Publisher : Springer Science & Business Media
Page : 788 pages
File Size : 15,37 MB
Release : 2012-12-06
Category : Medical
ISBN : 3642653529
The present volume covers the physiology of the visual system beyond the optic nerve. It is a continuation of the two preceding parts on the photochemistry and the physiology of the eye, and forms a bridge from them to the fourth part on visual psychophysics. These fields have all developed as independent speciali ties and need integrating with each other. The processing of visual information in the brain cannot be understood without some knowledge of the preceding mechanisms in the photoreceptor organs. There are two fundamental reasons, ontogenetic and functional, why this is so: 1) the retina of the vertebrate eye has developed from a specialized part of the brain; 2) in processing their data the eyes follow physiological principles similar to the visual brain centres. Peripheral and central functions should also be discussed in context with their final synthesis in subjective experience, i. e. visual perception. Microphysiology and ultramicroscopy have brought new insights into the neuronal basis of vision. These investigations began in the periphery: HARTLINE'S pioneering experiments on single visual elements of Limulus in 1932 started a successful period of neuronal recordings which ascended from the retina to the highest centres in the visual brain. In the last two decades modern electron microscopic techniques and photochemical investigations of single photoreceptors further contributed to vision research.
Author : Mohammad Hossein Khani
Publisher :
Page : pages
File Size : 32,80 MB
Release : 2018
Category :
ISBN :
Author : James F. Case
Publisher :
Page : 136 pages
File Size : 16,17 MB
Release : 1986
Category : Sense-organs
ISBN :