The State of the Serotonin Neurons in the
Brainstem
• We counted the serotonin neurons in the
brainstem of depressed suicides and controls
without a psychiatric illness who did not die by
suicide.
• We found no evidence of fewer serotonin neurons,
or even smaller average size of the neurons.
• We did find evidence of altered function of
serotonin neurons in the depressed suicides.