Directional Summation in Non-direction Selective Retinal Ganglion Cells
Figure 4
Cortical neurons favor centripetal summation.
A) A hippocampal oriens lacunosum moleculare cell with uncaging locations (+) and EPSPs (average of 5 trials) for each location moving toward or away from the soma. B) Expected (calculated) charge for multiple activation (grey) vs. actual summed EPSP. C) Summation ratio for peak amplitude. D) Summation ratio for total charge. (* paired t-test; p<0.05 N = 6 cells; ** p<0.025; N = 5 cells).