The locations of sensory and motor areas of neocortex in mouse lemur as defined by six different architectonic procedures. (a) A surface view of cortex based on brain sections cut parallel to the surface of flattened cortex; (b) a lateral view based on coronal sections; and (c) a dorsal view based on sagittal sections. V1, V2 and V3, visual areas 1–3; MST and MT, middle temporal visual areas and medial superior temporal area; R and A1, auditory area 1 and the rostral auditory area; S1, 3b, 3a and 1;somatosensory areas S1(3b), 3a and 1; M1, primary motor cortex; OB, olfactory bulb. Inj, a damaged region due to an injection of a tracer. Scale bar = 1 mm.