Table 1.

Morphological features, neurotransmitter, and chromatin patterns of central neurons.

	Large nucleolus scant heterochromatin			Small nucleolus abundant heterochromatin
	Spiny	Long axon	Neuro transmitter	Spiny	Long axon	Neuro transmitter
Cortex Projection neuron	+	+	Glutamate
Cortex Inhibitory interneuron				−	−	GABA
Cortex Excitatory interneuron				+	−	Glutamate
Olfactory bulb Projection neuron (Mitral/tufted cell)	−	+	Glutamate
Olfactory bulb Interneuron (granule cell)				+	−	GABA
Striatum Projection neuron	+	+ (medium-range)	GABA
Striatum Cholinergic interneuron	−	−	Acetylcholine
Cerebellum Projection neuron (Purkinje cell)	+	+ (medium-range)	GABA
Cerebellum Interneuron (granule cell)				−	−	Glutamate