Improving sleep and cognition by hypnotic suggestion in the elderly

Cordi, Maren Jasmin; Hirsiger, Sarah; Mérillat, Susan; Rasch, Björn

doi:10.1016/j.neuropsychologia.2015.02.001

Cited by 49 publications

(57 citation statements)

References 35 publications

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“…The duration of objectively measured SWS increased by 13 minutes in highly suggestible subjects, and these extensions in SWS also affected subjectively rated sleep quality. Our results are a conceptual replication of our two previous studies [14,15]. In these two studies, we reported that the same hypnotic suggestion increased SWS in a midday nap in young and old healthy and high-suggestible females.…”

Section: Discussionsupporting

confidence: 92%

“…A German- and French-speaking hypnotherapist from the University of Fribourg (Laurent Rossier) translated the two texts we had previously used [14,15] to French. Duration of both texts was around 15 minutes.…”

Section: Methodsmentioning

confidence: 99%

“…As in Cordi et al [15], we applied the frontallobe-dependent longterm-memory task in which subjects have to name as many examples for a given category as possible within 2 minutes. Across the two experimental sessions and the immediate and postsleep recall, we randomized four categories across subjects (hobbies, fruits, animals, occupation).…”

Section: Methodsmentioning

confidence: 99%

“…SWS is hence a vital component for healthy sleep, and the development and testing of effective and safe methods to protect and improve SWS are highly warranted. We have previously demonstrated that hypnotic suggestions represent an effective means to increase the amount of SWS in a risk-free way [14,15]. Hypnosis has been defined as “a state of consciousness involving focused attention and reduced peripheral awareness characterized by an enhanced capacity for response to suggestion” [16].…”

Section: Introductionmentioning

confidence: 99%

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Improving night-time sleep with hypnotic suggestions

Cordi

Rossier

Rasch

2018

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Slow-wave sleep (SWS) is fundamental for maintaining our health and well-being, and SWS is typically reduced in stress-related sleep disturbances and age-related sleep disorders. We have previously reported that exposure to hypnotic suggestions before sleep effectively increases the duration of SWS during a midday nap in younger and older women suggestible for hypnosis.However, it remains unclear whether this beneficial effect of hypnosis on SWS can be generalized to night-time sleep and men. Therefore, we tested the effect of the hypnotic suggestions on SWS across an 8 hours night-time sleeping interval in 43 healthy young French-speaking subjects (19 males) of high and low suggestibility. In accordance with our previous results, listening to hypnotic suggestions before sleep increased the amount of SWS in highly suggestible subjects significantly by 13 min compared to a control condition in both genders. Particularly in the first hour, slow-wave activity was significantly increased after hypnosis as compared to the control night in high suggestible. The hypnosis-induced benefits on objective sleep parameters were also reflected in increased subjective sleep quality ratings. Our results demonstrate that hypnotic suggestions are an effective tool to deepen sleep and improve sleep quality also across a whole night of sleep in young healthy men and women. Our findings provide an important basis for the examination and potential application of hypnosis to improve deep sleep in populations with sleep disturbances.

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Section: Discussionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving night-time sleep with hypnotic suggestions

Cordi

Rossier

Rasch

2018

Preprint

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“…Thus, we hypothesized that hypnosis would reduce sleep latency (time to fall asleep), increase global sleep quality, and increase overall sleep duration. Sleep in older adults (Cordi, Hirsiger, Merillat, & Rasch, 2015) and in a non-clinical sample (Cordi, Schlarb & Rasch, 2014) has been successfully “deepened” with hypnosis in two clinical trials showing increases in slow wave sleep by 57% and 81% respectively. In the non-clinical sample, time spent awake was reduced by 67%.…”

Section: Present Studymentioning

confidence: 99%

Augmenting cognitive processing therapy to improve sleep impairment in PTSD: A randomized controlled trial.

Galovski¹,

Harik²,

Blain³

et al. 2016

Journal of Consulting and Clinical Psychology

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Objective Despite the success of empirically supported treatments for posttraumatic stress disorder (PTSD), sleep impairment frequently remains refractory following treatment for PTSD. This single-site, randomized controlled trial examined the effectiveness of sleep-directed hypnosis as a complement to an empirically supported psychotherapy for PTSD (cognitive processing therapy; CPT). Method Participants completed either 3 weeks of hypnosis (n = 52) or a symptom monitoring control condition (n = 56) before beginning standard CPT. Multilevel modeling was used to investigate differential patterns of change to determine whether hypnosis resulted in improvements in sleep, PTSD, and depression. An intervening variable approach was then used to determine whether improvements in sleep achieved during hypnosis augmented change in PTSD and depression during CPT. Results After the initial phase of treatment (hypnosis or symptom monitoring), the hypnosis condition showed significantly greater improvement than the control condition in sleep and depression, but not PTSD. After CPT, both conditions demonstrated significant improvement in sleep and PTSD; however, the hypnosis condition demonstrated greater improvement in depressive symptoms. As sleep improved, there were corresponding improvements in PTSD and depression, with a stronger relationship between sleep and PTSD. Conclusion Hypnosis was effective in improving sleep impairment, but those improvements did not augment gains in PTSD recovery during the trauma-focused intervention. Public Health Significance: This study suggests that hypnosis may be a viable treatment option in a stepped-care approach for treating sleep impairment in individuals suffering from PTSD.

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