Coronal section (Cresyl Violet stained) at R3 level showing electrode track passing through the regions of nucleus centralis and basalis. EC – External capsule, NBM – nucleus basalis magnocellularis, NBP – nucleus basalis parvocellularis, NCE – nucleus centralis, NCO – nucleus cortical amygdala; OT – optic tract, PIR – piriform cortex, CL – claustrum.