THE SPATIAL PROPERTIES OF THE HUMAN ELECTRORETINOGRAM,
Abstract
A technique was developed for recording the electroretinogram of any small region of the human retina. Responses to stray light and suppressed by steady illumination of the whole retina outside the geometrical image of the stimulus. The technique is easily capable of detecting the blind spot, and of examining the electrical response to a stimulus of 2 degree diameter centered on the fixation point. For stimuli larger than several square degrees, the electroretinogram shows exact spatial additivity. On a finer scale it is at least roughly additive. The foveal electroretinogram differs in shape from the extrafoveal. The electroretinograms of different regions of the extrafoveal retina differ greatly one from another in their amplitude per unit area of retina, but little if at all in their shape. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 22, 1965
- Accession Number
- AD0623343
Entities
People
- G. S. Brindley
- G. Westheimer
Organizations
- University of California, Berkeley