Skip to main content
. 2014 Mar 5;34(10):3597–3606. doi: 10.1523/JNEUROSCI.3359-13.2014

Figure 1.

Figure 1.

Electrical images of an OFF parasol RGC and ON-OFF PAC. The electrical image is the average spatiotemporal spike waveform recorded across the electrode array during the spikes detected from a specific cell. A, B, Electrical image of an OFF parasol cell. Large somatic spikes were detected at the main electrode (1), opposite-sign dendritic spikes were detected nearby (2), and triphasic axon spikes were detected propagating across the array (3–7). Diameters of black and red circles represent the amplitude of the electrical image at each electrode that exhibited a voltage deflection greater than an arbitrary threshold (the large amplitudes displayed are saturated to avoid overlap). For all RGCs recorded, the axon spikes propagated in approximately the same direction (data not shown). C, D, Electrical image of a simultaneously recorded ON-OFF PAC. The large somatic spike (1) was accompanied by dendritic spikes nearby (2) and by axonal spikes propagating simultaneously in multiple directions away from the soma (3–10), unlike the single axon of the parasol cell.