Table 1. Model unit counts within each area.

*MSTd units tuned to ground patterns were added in Simulation 2. **Disparity tuning was incorporated in Simulation 3.

Area	Resolution	Count
MT+	64 (x) x 64 (y) x 24 (directions) x 5 (speeds) x 5** (disparities)	2457600
MSTd (band-pass)	16 (x) x 16 (y) x 5 (speeds) x 3** (disparities)	3840
MSTd (gradient)	16 (x) x 16 (y)	256
MSTd (ground)*	16 (x) x 16 (y)	256
MSTd (speed-summating)	16 (x) x 16 (y) x 3** (disparities)	768
MT-	64 (x) x 64 (y) x 24 (directions) x 5 (speeds) x 5** (disparities)	2457600
MSTv	64 (x) x 64 (y) x 24 (directions) x 5** (disparities)	491520