Previous research at Emory has shown that many individuals
with hypersomnia have a substance in their spinal fluid that acts like a sleeping pill, enhancing the action of the neurotransmitter GABA.
Questions in the QIDS - SR - 116 correlate
with the nine DSM - IV symptom criterion domains, Including: Sleep disturbance (initial, middle, and late insomnia or
hypersomnia)(Q 1 - 4), Sad mood (Q 5), Decrease / increase in appetite / weight (Q 6 - 9), Concentration (Q 10), Self - criticism (Q 11), Suicidal ideation (Q 12), Interest (Q 13), Energy / fatigue (Q 14), Psychomotor agitation / retardation (Q 15 - 16).