Electrical Vestibular Nerve Stimulation (VeNS) as a Treatment for Improving Sleep in Visually Impaired Patients
Effectiveness of Electrical Vestibular Nerve Stimulation in the Improvement of Sleep in Patients With Visual Impairment
Neurovalens Ltd.
60 participants
Dec 1, 2025
INTERVENTIONAL
Conditions
Summary
Trial title: Effectiveness of Electrical Vestibular Nerve Stimulation in the Improvement of Sleep in Patients with Visual Impairment. This pilot clinical trial is testing whether a device called VeNS (vestibular nerve stimulation) can safely and effectively improve sleep in adults who are visually impaired. The study will compare the active VeNS device to a sham (inactive) device. Participants will use the device under supervision for 30 minutes a day over 4 weeks, followed by a 4-week observation period. Researchers will assess sleep improvements, safety, and how acceptable and easy the treatment is for participants. Allocation: Randomized to either active device or control device usage. Endpoint classification: Efficacy Study Intervention Model: Parallel Assignment in 1:1 active to control allocation Sample size: The aim is to recruit a total of up to 60 participants. The study will last 8 weeks in total for each subject.
Eligibility
Inclusion Criteria15
- Signed Informed Consent
- Male or female, age ≥ 20 years and ≤ 60 years at the time of signing informed consent
- PSQI score ≥ 5 at screening and baseline
- Symptoms of sleep disorder lasting ≥ 3 months at the time of screening
- Severely Sight Impaired (defined as a visual acuity of < 6/60 but ≥3/60 at 6 meters) OR blind (defined as a visual acuity of <3/60 at 6 metres).
- Participants must be accompanied by a family member or carer during the enrollment and initial study visit. For subsequent visits, accompaniment is encouraged; if a companion is unavailable, assistance will be provided by study staff or trained personnel.
- Can speak/read Hindi or English
- Ability and willingness to complete all study visits and procedures; in particular an agreement to engage with trying to use the device per the study protocol
- Ability and willingness to attend the clinic for 30-minute stimulation sessions 5 days per week for the duration of the treatment period (4-weeks).
- Agree not to undergo any extreme lifestyle changes during the duration of the study that could impact sleep e.g. dietary or exercise changes
- Agreement not to use prescription, or over the counter, sleep medications for the duration of the trial and haven't for 4 weeks before the trial
- Agreement not to use sleep trackers for the duration of the study (e.g. sleep app smart watches such as Fitbits)
- Agree not to travel across multiple time-zones during the duration of the study
- Agree to maintain a familiar sleeping environment/routine throughout the study and will not discontinue or begin treatment with new devices, used while sleeping, during the study (e.g. CPAP machines)
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Exclusion Criteria22
- A PSQI score < 5 at screening
- History of skin breakdown, eczema or other dermatological condition (e.g. psoriasis) affecting the skin behind the ears.
- Previous diagnosis of a chronic viral infection, for example hepatitis or HIV
- A history of stroke or severe head injury requiring intensive care or neurosurgery
- Diagnosis of a current psychotic disorder
- Suffering from a current characterized depressive episode
- Presence of permanently implanted battery powered medical device or stimulator (e.g., pacemaker, implanted defibrillator, deep brain stimulator, vagal nerve stimulator etc.).
- Pregnancy or breast-feeding or intends to become pregnant
- History of epilepsy
- History of active migraines with aura
- History of head injury requiring intensive care or neurosurgery
- History of diagnosed cognitive impairment such as Alzheimer's disease/dementia
- History of bipolar, psychotic or substance use disorders
- Regular use (more than twice a month) of antihistamine medication within the last 6 month. The subject can opt to switch to Fexofenadine (non-drowsy) and may enroll after a wash-out period of 2 weeks.
- History or presence of malignancy within the last year (except basal and squamous cell skin cancer and in-situ carcinomas)
- A diagnosis of myelofibrosis or a myelodysplastic syndrome.
- Previous use of any VeNS device
- Participation in other clinical trials sponsored by Neurovalens or other insomnia studies
- Any other medical condition, or medication use, that in the opinion of the PI is likely to make the subject refractory to VeNS.
- History of vestibular dysfunction or other inner ear disease
- Member of the same household is currently or has previously participated in clinical study sponsored by Neurovalens
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Interventions
The Modius Sleep device is a non-invasive, battery-powered headset that delivers low-level electrical stimulation (up to 1.0 mA at 0.25 Hz) to the skin behind the ears over the mastoid processes. It is worn like headphones and used for 30 minutes per session, five times per week for four weeks, under clinical supervision. Participants are assisted by a staff member to position the electrodes and adjust stimulation intensity in 0.1 mA steps, up to a maximum of 1.0 mA. The headset is turned on manually, and participants are encouraged to set it up independently after initial guidance. Sessions take place while seated, and participants remain supervised throughout to ensure correct use and safety.
The sham version of the Modius Sleep device is visually and operationally identical to the active device to preserve blinding. It delivers a brief initial stimulation (30 seconds, with a 20-second taper) at 0.8 Hz to mimic the sensation of the active device without providing ongoing vestibular modulation. The appearance, placement, and user experience are the same, and participants are informed that the sensation may fade during use. Like the intervention device, the sham is used under supervision in the clinic for 30-minute sessions, ensuring identical procedures across both groups. This design maintains blinding while minimizing any physiological effects from the sham stimulation.
Locations(1)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT06956118