Have they found any physical differences between bipolar II individuals and the rest of the population? Guess what...yes!
Guess we should focus on the Amygdala..why..simplistically...The hippocampus-probably named derived from little sea-horse shape involved with memories...we can get flooded with memories but don't have trouble with memory retrieval system unless related to medication-
sensory- cortex processing movement, color and objects--for bipolar II's that appears intact although maybe intensified...
auditory cortex -complex auditory, linguistic information-again medication might impede us..
the thalamus-consciousness-again medication can dim up.
he striatum and substantia nigra -coordination and movement
frontal cortex -behaviour, judgement and personality
hypothalmus -produces many hormones and is responsible for some of the side effects of neuroleptic medicines, such as thirst, hunger and altered sexual function.Amygdala-seat of emotions...fear..aggression..paralysed helplessness?animal instincts? fear and trembling?anxiety?
A lot of us have become defensive over the years because our emotions tend towards extremes because we lack that middle and appear to have a lot of ballastic zones..and ballastic triggers..and need those antivolcanics..(later we talk about partial epilepsy.)
Differences in physiology
Please click here for studies on the amydgala studies on amydgala to show where they find differences in the limbic area of bipolars over general population and schizophrenics. Some theorize that the left amydgala is larger because of blood flow. If you read all the studies, you will see the larger size left amydgala might be related to depression so the studies are incomplete at best. Also you see mention of cortisol possible connection and other connections.
Without medication or mood stabilizers, I prefer to call existence the ballistic zone with triggers galore. If we have no resting place or middle ground, the intensity of practically every new experience can set us off both positively or negatively. Positively we usually don't mind at all...The experience is usually perseverative..almost obsessive. We stay on that track and it is hard to reach satiation. Wonder if that is one of the reasons there are so many creative geniuses who were/are bipolar. They can stay with an idea a lot longer with a 'normally wired" person who gets bored or sated a lot faster.