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Updated: Jun 28, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Insomnia and depression
Ruth M Benca1, Michael J Peterson
1Department of Psychiatry, University of Wisconsin-Madison, Madison, WI 53719-1176, USA. rmbenca@wisc.edu
Abstract:
It is clear that insomnia and depression are intimately related, which may suggest an overlapping neurobiology. Although much progress has been made toward understanding how these disorders relate to each other, the exact neurobiological mechanisms that link them remain elusive. Sleep changes in depression may be associated with abnormal neurotransmission, genetic polymorphisms, HPA overactivity, impaired plasticity, or most likely a combination of factors. It is therefore crucial that sleep assessments go beyond traditional polysomnography to include a more expanded set of objective measures in the hope that these will uncover the common neurobiology that is thought to underlie insomnia and depression.
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