Ain’t easy. Especially on low sleep. I recently stumbled upon some literature describing the relationship between the prefrontal cortex and the limbic system. Specifically it went over the connections between the prefrontal cortex and the amygdalae. Will have to come back here & post the link(s) but wanted to jot this down here, as it’s timely & highly relevant to mood disorders.
Sleep is a fickle thing & it seems that quality and duration of sleep is related to one’s ability to keep their amygdala functioning well. The absence of good quality sleep of proper duration can lead one to experience impulsiveness, out-of-control distractibility and responsiveness to irrelevant stimuli, and immense irritability. Take it from me: the vast gulf between being contented & calm or being a murderous monster can be crossed, in part, by hitting the hay.