Figure 4.

Anatomical connectivity assessed by FLNe

(A) Each colored dot indicates the injection site of a retrograde tracer, shown here on a template brain.

(B) FLNe values for all indicated pairs of areas, averaged over the projections in the respective 2 directions, for example, V1-to-V4 and V4-to-V1.

(C) FLNe values for all indicated projections from the areas listed on the y axis to the areas listed on the x axis. Black matrix entries indicate projections for which <10 labeled neurons were counted (see also Figure S4). Those entries were discarded for the average shown in (B).

(B and C) Note the logarithmic grayscale, which applies to both panels and spans 6 orders of magnitude.

See also Figure S4.