Connectivity Matrix

This is a connectivity matrix N (inputs to each area) x N (areas that send inputs) compiled by examining the primary literature of anatomical tract-tracing studies in the frontal, parietal and temporal cortex of the macaque brain. Inputs come from studies using injections of retrograde and anterograde transport of tracers. In many cases both were used in the same study to characterize the connectivity. The strength of inputs to each area from any other area is based on the data reported in the examined studies and, to a lesser extent, by a quantitative inspection of the data. Accordingly, we classified inputs to each area as absent (0), weak (16), moderate (33), medium (50), strong (67), or very strong (100).