Figure 1

Synthetic view of the retina model. A stimulus is perceived by the retina, triggering different pathways. Pathway I (blue) corresponds to a feed-forward response where, from top to bottom: The stimulus is first convolved with a spatio-temporal receptive field that mimics the outer plexiform layer (OPL) (“Bipolar receptive field response”). This response is rectified by low voltage threshold (blue squares). Bipolar cell responses are then pooled (blue circles with blue arrows) and input ganglion cells. The firing rate response of a ganglion cell is a sigmoidal function of the voltage (blue square). Gain control can be applied at the bipolar and ganglion cell level (pink circles) triggering anticipation. This corresponds to the label II (pink) in the figure. Lateral connectivity is featured by pathway III (brown) through ACells and pathway IV (green) through gap-junctions at the level of GCells