Electroretinographic responses to alternating gratings before and after section of the optic nerve.
Electroretinographic (ERG) responses to sinusoidal gratings reversed in contrast (pattern-reversal ERG) were recorded from both eyes of cats before and after unilateral section of the optic nerve. In the eye ipsilateral to the section, the pattern-reversal ERG remained unaltered for a few days after the section, the progressively decreased in amplitude, first at low and then at high spatial frequencies, to disappear completely about 4 months after the section, when ganglion cell degeneration was practically complete. The flash ERG remained unaltered. No alteration was observed in the contralateral eye.
D000818:Animals; D002415:Cats; D004596:Electroretinography; D005556:Form Perception / Q000502:physiology*; D009410:Nerve Degeneration; D009474:Neurons / Q000502:physiology*; D009900:Optic Nerve / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D012160:Retina / Q000166:cytology* / Q000502:physiology