Sleep Disturbance and Emotion Regulation Brain Dysfunction as Mechanisms of Neuropsychiatric Symptoms in Alzheimer's Dementia

CBT-I improves sleep through a combination of behavioral interventions (stimulus control (SC), sleep restriction (SR)), cognitive therapy (CT) as well as additional components such as mindfulness training and sleep hygiene education. SC is an intervention that re-establishes the connection between the bed/bedroom with sleep to help develop a more consistent sleep/wake pattern. SR leads to higher quality sleep by reducing excessive time spent in bed to the actual amount of sleep, thereby creating mild sleep deprivation and increasing the homeostatic sleep drive. Like CT for other disorders, CT for insomnia targets maladaptive thoughts and cognitions that may interfere with sleep.

"DT-I is a quasidesensitization treatment presented as a means of eliminating the conditioned arousal, which prolongs nocturnal awakenings. DT-I has been validated as an active-placebo control condition. Therapists help each DT-I recipient develop a chronological 12-item hierarchy of common activities he/she does on awakening at night (e.g., opening eyes, clock watching). Therapists also help them develop 6 imaginal scenes of themselves engaged in neutral activities (e.g., reading the newspaper). Each session, DT-I recipients are taught to pair neutral scenes with items on the 12-item hierarchy so, by the end of the sixth session, all hierarchy items have been practiced with therapist assistance. Each session, the exercise is tape recorded and the patient is given this tape locked in a player. The patients are told to practice their exercises at home once each day, no less than 2 hours before bedtime, but to avoid using the tape or exercise during sleep periods."