A 44-year-old female has been diagnosed with major depression. Which of the following neuroimaging findings is most congruent with the woman's diagnosis?
A)
Decreased brain activity in the pons and brain stem
B)
Reduced activity and gray matter volume in the prefrontal cortex
C)
Atrophy and decreased blood flow in the amygdala
D)
Enlargement of the lateral and third ventricles and reduction in frontal and temporal volumes
Ans:
B
Feedback:
In some cases of familial major depressive disorder and bipolar disorder, PET and MRI studies have demonstrated a reduction in the volume of gray matter in the prefrontal cortex, with an associated decrease in activity in the region. Brain stem involvement is not common, and the amygdala tends to have increased blood flow and oxygen consumption during depression. Enlargement of the lateral and third ventricles and reduction in frontal and temporal volumes are associated with schizophrenia.
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