Infralimbic cortex
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Connectivity
Primates
GABAergic neurons within the amygdala, known as intercalated (ITC) cells, receive a strong projection from the IL medial prefrontal cortex (mPFC) in primates. ITC cells are thought to play a role as the 'off switch' for the amygdala, inhibiting the amygdala's central nucleus output neurons and its basolateral nucleus neurons. Further, it has been shown that electrical stimulation of IL reduces conditioned fear and strengthens extinction memory, explaining cortical control over extinction processes, one of the simplest forms of emotional regulation.
Rodents
Amygdala ITC cells receive strong projection from the IL mPFC in rodents as well.
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