Table 1.

Differences between outer and inner oscillatory activity in the rd retina (for detailed information, see text).

	Outer rd retina	Inner rd retina
Degenerative re-modeling of synaptic contacts	Severe	None to minor (not enough data)
Trigger of synaptic activity	Synaptic remodeling	Intrinsic and/or lack of input from outer retina
Participating cell types	Cones, rod bipolar cells, horizontal cells (?)	Cone bipolar cells, AII amacrine cells, ganglion cells
Number of simultaneously oscillating cells	Clusters of up to 10 cells	Dozens of ganglion cells
Frequency of spontaneous events	Maximum ~3 Hz	~10 Hz
Effect of GABA receptor antagonists	Decrease in activity	Increase in activity or no effect