Final answer:
Structural abnormalities in people with bipolar depression include abnormalities in brain regions such as the amygdala, dorsolateral prefrontal cortex, and pre- and postsynaptic cells.
Step-by-step explanation:
Bipolar depression is a mental illness characterized by prolonged periods of sadness. Structural abnormalities in people with bipolar depression include abnormalities in brain regions such as the amygdala, dorsolateral prefrontal cortex, and pre- and postsynaptic cells. Studies have shown that individuals with bipolar depression may have increased amygdala activity and decreased dorsolateral prefrontal cortex responses, which are related to the emotional regulation difficulties often experienced in this condition.