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Synaptic connection patterns between frog retinal ganglion cells and tectal neurons revealed by whole-cell recordings
H Nakagawa1, S Kikkawa, N Matsumoto
1Department of Biochemical Engineering and Science, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, Japan.
Brain Research
|December 5, 1994
Abstract:
The synaptic connections between frog retinal ganglion cells and tectal neurons were examined by whole-cell recordings in vivo combined with nystatin perforated patch-clamp technique and pulse-triggered averaging analysis. In five tectal neurons, monosynaptic EPSPs from seven R3 retinal ganglion cells were observed. One tectal neuron was found to receive EPSPs from both R1/2 and R3 retinal ganglion cell simultaneously. Thus we could provide the first evidence for convergence of multiple types of retinal axons upon a single tectal neuron.