Figure 7. Scotopic electroretinographic recordings 12 weeks after optic nerve transection. Examples of the ERG traces recorded in an albino (A) and pigmented (B) rats in response to flash stimuli of increasing intensity for the unoperated right eye (thin traces) and for the operated left eye (bold traces) 12 weeks after optic nerve transection. The intensity of the flash stimuli is indicated to the left of the recording traces. Reduction in the pSTR and nSTR responses from operated eyes versus unoperated eyes was clearly seen 12 weeks after ONT, while no other apparent difference in ERG scotopic and mixed responses was evident between the operated and unoperated animals for both rat strains.