Directional Summation in Non-direction Selective Retinal Ganglion Cells
Figure 9
Retinal ganglion cells express HCN1 and HCN 4 channels.
A) Traces obtained by subtracting responses to voltage steps (−45–100 mV) before and after application of ZD7288. B) A plot of normalized tail current amplitude at each voltage. C) Images of cultured ganglion cells showing MAP2 (dendritic marker), and HCN1 or HCN4 staining. D) Pixel intensity for proximal and distal regions along the dendrites (paired t-test; p>0.05; N = 115 dendrites; 50 cells).