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| Name | Class |
|---|---|
| University of Southampton | OTHER |
| AIT Austrian Institute of Technology GmbH | OTHER |
| University of Zurich | OTHER |
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This study aims to a) investigate the feasibility of the detection of episodes of RMD using contactless 3D video analysis and customised analysis software and b) the use of vestibular stimulation as a therapy for childhood rhythmic movement disorder.
Rhythmic movement disorder (RMD) is a childhood onset sleep disorder that is characterised by repetitive movements that involve large muscle groups, such as body rocking, rolling and head banging. These rhythmic movements are performed prior to and during sleep and as such can disturb sleep with clinical consequences. There is no standard measure to quantify the severity of rhythmic movements. 3D video offers a contactless method of achieving this without disrupting the child's sleep. Vestibular stimulation has a soothing effect and might be effective in promoting sleep. Furthermore, mild vestibular stimulation in the form of gentle rocking movements generated by the Somnomat device might function as a stimulation substitute for the child's RMD with therapeutic potential.
This study aims to a) investigate the feasibility of the detection of episodes of RMD using contactless 3D video analysis and customised analysis software and b) the use of vestibular stimulation as a therapy for childhood rhythmic movement disorder.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intervention night | Experimental | Vestibular stimulation, in the form of gentle rocking movements, is provided using the Somnomat B rocking bed. Stimulation is provided for the first 60 minutes of the night and for 10 minutes upon detection of symptoms. The stimulation frequency is in the range of 0.25-2 Hz. |
|
| Baseline night | Sham Comparator | The sound of the moving bed is played back to the participant at the right sound intensity level. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Somnomat B | Device | Vestibular stimulation is provided using an innervated bed platform. This robotic device consists of a standard single bed, mounted on a moving mechanism. It was developed and produced by the ETH Zürich and approved for use in this study by Swissmedic. |
| Measure | Description | Time Frame |
|---|---|---|
| Effect of Therapy on Subjective Sleep Quality | Difference in perceived sleep quality between baseline and intervention nights. Data is collected in the first hour after awakening using a questionnaire. | 2 nights |
| Reliability of Automatic Detection of Symptoms | Episodes of rhythmic movement scored by an algorithm using 3D Video will be compared to the scoring of an expert | 3 nights |
| Measure | Description | Time Frame |
|---|---|---|
| Effect of Therapy on Objective Sleep Quality | Sleep quality is determined based on 2D video recordings and compared between baseline and intervention nights. | 2 nights |
| Effect of Therapy on Symptoms |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Robert Riener, Prof. Dr. | ETH Zürich | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sensory Motor Systems Lab | Zurich | Canton of Zurich | 8092 | Switzerland |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 31681030 | Derived | Gall M, Kohn B, Wiesmeyr C, van Sluijs RM, Wilhelm E, Rondei Q, Jager L, Achermann P, Landolt HP, Jenni OG, Riener R, Garn H, Hill CM. A Novel Approach to Assess Sleep-Related Rhythmic Movement Disorder in Children Using Automatic 3D Analysis. Front Psychiatry. 2019 Oct 16;10:709. doi: 10.3389/fpsyt.2019.00709. eCollection 2019. |
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| ID | Term |
|---|---|
| D013016 | Sound |
| ID | Term |
|---|---|
| D011840 | Radiation, Nonionizing |
| D011827 | Radiation |
| D055585 | Physical Phenomena |
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Crossover Assignment
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Blinding of the participants is impossible, as the stimulation is easy to perceive and cannot be confused with a baseline night. Therefore, participants are informed about the character of the night (max. 5 minutes) before the moment of lights off. For safety reasons the experimenter that is present is also aware of the condition.
| Sound | Other | Sound of the moving bed was recorded and played back during the baseline night. |
|
Severity of symptoms is determined based on 2D video recordings. The number of episodes of rhytmic movement (count) and the duration of episodes (minutes) compared between baseline and intervention nights.
| 2 nights |
| Preferred Stimulation Parameters | Participants can try out different directions of movement (pitch or roll) and different movement frequencies between 0 and 2 Hz and choose their preferred settings (one direction + one frequency). | 1.5 hours |