Fig. 3.

(A) Mean number of retrogradely labeled NB cells per section per rat according to rostrocaudal position for the various populations of projection neurons. (B) Cumulative (left axis) and mean ± SEM (right axis) counts of retrogradely labeled neurons projecting to each possible combination of terminal fields from all animals (n = 7). (C) Distance to the median section, last section which contained retrogradely labeled neurons, and the end of the nucleus ± SEM for the various populations of projection neurons. Note that roughly one-half of the nucleus, i.e. the caudal end, is devoid of retrograde labeling. NB, Nucleus basalis; VAChT, vesicular acetylcholine transporter; OFC, orbitofrontal cortex; mPFC, medial prefrontal cortex; ACC, anterior cingulate cortex.