抄録
Bevelled glass microelectrodes were used to record spike potentials extracellularly from the ganglion cells of the rabbit retina. Good responses were obtained from the isolated retina or eye-cup preparation for at least 12 hr. Using a contrast reversal stimulus, 63.8 (67/105) of the units showed linear spatial summation (X-cells), and 21.0 %(22/105) showed nonlinear spatial summation (Y-cells). The Xand Y-cells in the rabbit retina had physiological properties which were similar to those in cat retina. Directionally selective cells (15.2 %) were found to respond poorly, if at all, to the contrast reversal stimulus.
