Reflections on a journey as sleep researcher and geriatric psychiatrist.

After first recalling the origins of my interest in sleep and dreams at UVa (1969) and my MD thesis at Yale on sleep in mood disorders (1973), I will describe my service to the field of sleep disorders medicine, through various roles in the American Sleep Disorders Association, the Institute of Medicine, the National Institute of Mental Health, and the DSM-5 Task Force of the American Psychiatric Association. I will then present the broad themes of my contributions to psychiatric sleep research, focusing on the neurobiology of sleep as a dimension of the risk and protective architecture for depression in older adults, as a bridge to diagnostic and treatment issues in later-life depression, and to clinical and translational neuroscience addressing the intersections of sleep, aging, and mind/brain health. Throughout this narrative, I highlight many relationships with mentors and mentees. All of my scientific activity has been team-based, providing the social matrix for the physician-scientist I have become. This paper is part of the Living Legends in Sleep Research series, which is sponsored by Idorsia Pharmaceuticals and Jazz Pharmaceuticals.