Electroretinography may be a take a look at to live the electrical response of the eye's photosensitive cells, referred to as rods and cones. These cells
are the tissue layer (the back part of the eye).
Electroretinography measures the electrical responses of assorted cell varieties within the tissue layer, together with the photoreceptors (rods and cones), inner retinal cells
(bipolar and amacrine cells), and also the neural structure cells. Electrodes are placed on the surface of the tissue layer (DTL silver/nylon fiber string or energy unit Jet) or on the skin to a lower place the attention (Sensor Strips) to live retinal responses. Retinal pigment animal tissue (RPE) responses are measured with an EOG take a look at with skin-contact electrodes placed close to the canthi. Throughout a recording, the patient's eyes are exposed to standardized stimuli and also the ensuing signal is displayed showing the time course of the signal's amplitude (voltage). Signals are terribly tiny, and generally are measured in microvolts or nanovolts. The energy unit consists of electrical potentials contributed by totally different cell varieties inside the tissue layer, and also the stimulation conditions (flash or pattern stimulation, whether or not a background lightweight is gift, and also the colors of the stimulation and background) will elicit stronger response from bound elements.
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