ymark

I know that an average of 10.7 million ganglion axons are projected to V1 area in layer 4. And through layer 2/3 are feed-forwarded to another regions (V2). But how many axons are projected to v2? What is the ratio input/output. I 'm interested only about the direct feed-forward and not about motor output (layer 5) or feedback output. Same question fro V2 or V3?