English: Isodendritic core. This figure shows the representation of the Isodendritic core components: dorsal nucleus of the raphe (red), locus ceruleus (dark blue), substantia nigra (pars compacta in black and pars diffusa in light blue), and the telencephalic cholinergic nucleus basalis of Meynert (green). (A) Medial view. (B) Dorsomedial view. The components of this network share morphological features, such as neurons with big somata, overlapping dendritic fields, predominantly poorly myelinated axons that extend to distant projection sites, and aminergic/cholinergic volume transmission. The isodendritic core is involved in modulation of many basic physiologic processes.