Amygdala: Efferent Projections

The central nuclei of amygdala send axons to PAG (periaquaductal gray matter), reticular pontis nuclei, lateral nuclei of thalamus, peribrachial, and PVN (periventricular nuclei of hypothalamus).

Interconnectionss of Amygdala

The interconnection within amygdala is shown below.

The primary auditory LTM depends on amygdala. The freezing and startling reactions might be mediated by different mechanism of NMDA receptors.

Efferent Projections of Amygdala

The bed nucleus of stria terminalis and substantia innominata can be classified as extended amygdala.

From	Function
PAG	freezing
Reticular pontis nuclei	startle
Lateral thalamus	cardio
Peribrachial	breathing
PVN	stress