Some of the research information pertains to ongoing clinical trials. No representation is made regarding Vielight devices or their capabilities beyond published results.
The information provided is for educational purposes only and is not intended to support the safety or effectiveness of Vielight devices. The Neuro Rx Gamma is the investigational device used in the pivotal clinical trial for Alzheimer’s disease.
None of Vielight’s devices are medical device cleared by Health Canada and they are not intended to diagnose, treat, cure, or prevent any disease.

Investigating Photobiomodulation for Alzheimer’s Disease

The clinical trial discussed on this page is set to investigate the effects of the Vielight Neuro RX Gamma device on patients with Alzheimer’s disease. More specifically, the trial is designed to find out whether transcranial-intranasal photobiomodulation could improve cognitive functioning and quality of life in patients with moderate to severe Alzheimer’s Disease.

The participants in the study will receive Neuro RX Gamma devices for home-based treatment sessions. The Neuro RX Gamma delivers low-energy near-infrared LED light to the brain, identically to the Neuro Gamma.

This extensive study involves 228 participants in a double-blind, randomized trial and includes a placebo-controlled group. The trial will take place in 8 sites across North America. It is expected to commence in January 2019 and run till January 2021.

ClinicalTrials.gov Link

Brain Photobiomodulation

Brain Photobiomodulation has enormous research potential

Gamma Neural Oscillations

Published in Nature, Scientific Reports – April 2019

Dr Corinne Fischer
Dr Corinne FischerChief Principal Investigator
Dr Corinne Fischer’s research focus includes the study of neuropsychiatric symptoms in dementia, specifically delusions and their neurocognitive/neurobiological correlates.

Dr. Fischer is an adjunct scientist and co-director of Neurodegenerative Research, Division of Neuroscience Research, at the Keenan Research Centre for Biomedical Research, the Li Ka Shing Knowledge Institute, St. Michael’s Hospital.

St Michael’s Hospital

The principal testing site will take place at St. Michael’s Hospital in Toronto, Ontario.

Home to the Li Ka Shing Knowledge Institute, made up of the Keenan Research Centre and the Li Ka Shing International Healthcare Education Centre, the hospital is among the first in the world to bring together researchers, educators and clinicians to take best practices and research discoveries to patient bedsides faster.

History of evidence

2014 – 2016

  • Significant Improvement in Cognition in Mild to Moderately Severe Dementia Cases Treated with Transcranial Plus Intranasal Photobiomodulation: Case Series Report

Co-authoring institutes – Harvard Medical School, Boston University School of Medicine

[ Full Publication (US National Library of Medicine) | Download Transcript ]


  • Photobiomodulation for Improving Brain Function in Dementia

[ Published Study Link (US National Library of Medicine)

    ( 10 participants | 1 year | Published )
  • Pulsed Near Infrared Transcranial and Intranasal Photobiomodulation Significantly Modulates Neural Oscillations

[ Published Study Link (Nature, Scientific Reports)]

    ( 20 participants | 1 year | Published )

Disclaimer: Some of the research information pertains to ongoing clinical trials. No representation is made regarding Vielight devices or their capabilities beyond published results.

Please note that the Neuro Gamma device is not the same as the Neuro RX Gamma that is currently being used in our clinical trials.
The RX Gamma is intended to be fully compliant with regulatory requirements for a medical device and will not be available without regulatory clearance. The “Neuro RX Gamma” is therefore a different product from the “Neuro Gamma”.

All Ongoing Vielight Research

(2019) Pulsed Near Infrared Transcranial and Intranasal Photobiomodulation Significantly Modulates Neural Oscillations: a pilot exploratory study

Data Analysis and Study Publishing

Published Study: Link

Study Title
Evaluating the effect of the Vielight Neuro Gamma Device on real-time EEG signals in older adults at rest.

Study Objective
To evaluate whether the energy delivered by the Vielight Neuro Gamma produces a reliable effect on neural activity in older adults.

Double-blind, prospective, crossover.

Study Duration
Two session evaluation.

Study Site(s)
Vielight Inc. Office

Number of Subjects
Maximum of 20 older adults

Major Inclusion/Exclusion Criteria
• 60 years of age or older
• No current major psychiatric or neurologic disease
• No history of stroke or seizures
• All other medical conditions controlled by stable therapy

Study Product and Planned Use
The experimental intervention will be the Vielight Neuro Gamma general wellness device. The device uses 5 light emitting diodes (810nm wavelength). Four diodes provide near-infrared energy transcranially, while the last does so intranasally, all targeting regions of the Default Mode Network. No significant heat is generated, allowing for a sham device which will be indistinguishable from the intervention to both the subjects and EEG technician. Devices will be utilized concurrently with EEG recording of subject at rest. The devices will be used in a randomized crossover design within the single study visit with the same EEG recordings to be obtained under both sham and active conditions.

Study Procedures
1. Informed Consent
2. Eligibility Assessment
3. First EEG Recording
4. One week washout period
5. Second EEG Recording

Primary Endpoint
Change from baseline in overall power spectral density between active and sham session.

Statistical Methodology
Repeated measures ANOVA with treatment as within subject measure.

2.1. Study Rationale & Background
Vielight Inc. has developed a novel general wellness device, called the Vielight Neuro Gamma, which delivers near infrared light through LEDs positioned over the skull and intranasally. This device is intended to enhance mental acuity as a general wellness device.

There are questions as to whether near infrared light is capable of penetrating the skull and/or nasal mucosa to reach and produce reliable effects in the brain.

Thus, Vielight Inc. wishes to utilize electroencephalography (EEG) as a method to measure, in real time, the effects of the Vielight Neuro Gamma on neural activity.

2.2. Study Device: Vielight Neuro Gamma
The Vielight Neuro Gamma device is a portable, wearable, low-level light delivery device that administers near-infrared light to the brain trans-cranially and intra-nasally and is intended to enhance mental acuity as part of general wellness. The device, shown below, consists of a controller (1), a Nasal Applicator (2), and a Head Set (3).

neuro gamma
Figure 1. Vielight Neuro Gamma device
The Vielight Neuro Gamma delivers painless, non-invasive, non-thermal, non-laser, pulsed (40 Hz; 50% duty cycle), near-infrared light (810 nm wavelength) through 5 non-laser light emitting diodes (LEDs) over a 20 minute session. The device is powered by three rechargeable NiMH batteries. As shown below, one of the Vielight Neuro Gamma

LEDs is placed inside the nose for intranasal transmission of light energy and the remaining four LEDs are positioned over the skull for transcranial transmission.

Figure 2. Placement of Vielight Neuro Gamma device
2.3. Study Objective
In order to effectively test the capability of the Vielight Neuro Gamma to affect neural activity, EEGs using an active device must be compared to sham device EEGs in 20 subjects. This will allow us to reasonably calculate whether there is a significant difference in power spectral density as well as examine other relevant outcomes post-hoc.

2.4. Study Design
This is a non-randomized prospective experimental study.
Study Procedures are as follows:
1. Informed Consent
2. Eligibility Assessment
3. First EEG Recording
4. One week washout period
5. Second EEG Recording

2.5. Study Endpoints
Detailed information about endpoint calculation is provided in Section 6 Statistical Plan and Methods.

2.6. Study Site
This study will be conducted in the offices of Vielight Inc. at 346A Jarvis Street in the downtown Toronto region. This site has been setup to meet the requirements of the EEG system.

3.1. Inclusion Criteria
1. Present valid government identification demonstrating age of 60 years or older
2. Capable of speaking English in order to comply with study procedures
3. Capable of reading English in order to complete Informed Consent form and online screening survey

3.2. Exclusion Criteria
1. Unable/unwilling to sign Informed Consent form
2. Mini Mental State Examination (MMSE) score of <27
3. Current major psychiatric or neurologic disease
4. History of stroke or seizures
5. Medical conditions uncontrolled by stable therapy

4.1. Subject Recruitment
Subjects will be recruited from the Greater Toronto Area through recruitment advertisements placed online on sites such as Craigslist or Kijiji and via social media sites including Facebook. Advertisements in the form of posters in the local area surrounding the study site or in newspapers such as NOW! or Eye Weekly may also be used to recruit prospective subjects. Any advertisements will be approved by an Institutional Review Board. A total of 20 subjects are anticipated to complete this study.

4.2. Preliminary Eligibility Assessment
Eligibility screening will be conducted through an online screening form providing a short description of the study and requesting non-medical information. Questions will be related to the inclusion criteria in section 3 above as well as with regards to their ability to comply with study procedures (eg. willingness to remove any religious clothing or wigs to accommodate the EEG cap).

4.3. Study Visit Procedures

A) Study description and Informed Consent
• Study staff will explain the purpose of the study to the participant and what study participation will involve.
• Information must be given in both oral and written form.
• Subjects will be provided a copy of the Informed Consent Form, and given as much time as necessary to make an informed decision regarding participation.
• The subject information advises the participant that they are free to refuse their participation in or withdraw from the study at any time.
• The subject will be encouraged to ask questions.
• The investigator or other study staff will then obtain and document informed consent from the participant.
• The subject will be given copies of the signed Informed Consent Form.
• If consent is declined, the subject’s reason for declining (if provided) will be recorded in the screening log and CRF

B) Assessment of eligibility criteria
• Following consent, study staff will reassess eligibility captured during online screening and record these on the study Case Report Form (CRF).
• Study staff will also confirm the following exclusion criteria and record these on the study Case Report Form (CRF):
a. No current major psychiatric disorder or neurologic disease
b. No history of stroke or seizure
c. No other medical conditions uncontrolled by stable therapy
• Study staff will then conduct the MMSE to determine if the participants score is above 27 (ie. cognitively healthy) and record this on the study Case Report Form (CRF).
• If the subject has a MMSE score of 23 or lower, they will be informed that their score indicates potential cognitive impairment; however, this finding may be erroneous. Subjects will be encouraged to visit a physician in order to be properly assessed for cognitive impairment.
• If the subject does not satisfy eligibility criteria, the subject will not be enrolled and the CRF will indicate the reason for exclusion. A screening log will be maintained listing all subjects screened for the study and will document the reasons for non-participation of non-enrolled subjects.

C) Acquisition of EEG recordings
• Subject will be asked to sit in a comfortable chair, with their back supported and their legs and ankles uncrossed with feet flat on the floor
• Study staff will record any relevant subject details (physical characteristics and demographics) in the Case Report Form. These include but are not limited to: the Subject’s date of birth (YYYY-MM-DD), sex, weight, height, etc.
• Study staff will place the saline-rinsed EEG electrode cap on the subject and may apply additional saline to individual electrode locations in order to ensure good conductivity
• Once the electrode cap is producing reliable readings, the subject will be asked to remain still and quiet with their eyes closed for an initial 10 min Rest-EEG recording
• At the completion of the 10 min recording, study staff will then place the Vielight Neuro Gamma device or Sham device on the subject, as shown in Figure 2 above.
• Study staff may then re-apply additional saline to individual electrode locations in order to ensure good conductivity
• Once the electrode cap is producing reliable readings, the subject will be asked again to remain still and quiet with their eyes closed for a 20 min Rest-EEG recording
• At the completion of the 20 min recording, study staff will then remove the Vielight Neuro Gamma device or Sham device and again re-apply additional saline to individual electrode locations in order to ensure good conductivity
• Once the electrode cap is producing reliable readings, the subject will be asked to remain still and quiet with their eyes closed for a final 10 min Rest-EEG recording

The second study visit will be a replication of Part C of the first visit. At the conclusion of the visit, the subject will be provided financial compensation of $100 CAD for the study.

5.1. Devices and Procedural Purposes
Device(s) being evaluated for effect on neural activity:
Vielight Neuro Gamma

Quantitative EEG system with recording electrode cap:
BrainMaster Discovery 20 System 

5.2. Device Safety
Vielight Neuro Gamma:
The controller houses three 1.5V NiMH batteries (1900 mAh each) and the controlling electronics for the Neuro Gamma. Both the Headset and Nasal Applicator are connected to the controller with connectors that prevent them from being incorrectly inserted. A single button initiates a software controlled 20-minute therapy – automatically timed but can be discontinued by pressing the button a second time. The maximum power output density to the nasal mucosa is 25 mW/cm2 with a 50% duty cycle (total energy delivered per session = 15 J). The maximum power output density to the scalp is 100 mW/cm2 with a 50% duty cycle for the posterior band LEDs and 100 mW/cm2 with a 50% duty cycle for the anterior band LED (total energy delivered per session = 225 J). All LEDs are well under the exposure limits established by IEC 62471:2006 – Photobiological safety of lamps and lamp systems..

BrainMaster Discovery 20 System:
The BrainMaster Device does not produce any electro-magnetic fields and does not interfere with the operability of other devices The unit is entirely powered by the USB interface, eliminating the need for batteries, while maintaining subject safety.

6.1. Planned Analysis
The primary endpoint for this study will be the change from baseline in overall power spectral density between active and sham session. To statistically determine a significant difference a repeated measures ANOVA with treatment as the within-subject measure will be utilized.

Additional exploratory analysis of a variety of measures obtained from the EEG recording will be conducted post-hoc.

6.2. Primary Endpoint Analysis: Sample Size Selection
The sample size of the study was chosen based on a review of the literature for exploratory EEG studies of novel neurotechnologies. Utilizing a sample size of 20 for this initial study will allow us to best estimate effects sizes of critical measures to be examined in follow-up confirmatory studies.

6.3. Eligibility of Subjects, Exclusions, Missing Data, and Removal of Subjects
All subjects responding to the advertisements are potential study candidates and will be screened for eligibility. Every effort will be made to ensure eligibility of the subjects prior to study enrollment. Subjects who do not meet all inclusion/exclusion criteria will not be enrolled or followed in the study. Subjects for whom no data was acquired due to technical failures or those that withdraw consent will be excluded from analysis. Subjects for whom only partial data was acquired will be included in all possible analysis.

7.1. Serious Adverse Events
A serious adverse event is any adverse event which occurs during the study visiti. is life threatening; orii. results in permanent impairment of a body function or permanent damage to a body structure; oriii. necessitates significant intervention, such as major surgery, to prevent permanent impairment of a body function or permanent damage to a body structure; oriv. requires hospitalization or an extended hospital stay; orv. results in moderate transient impairment of a body function or transient damage to a body structure; orvi. requires intervention, such as medication or cardioversion to prevent permanent impairment of a body function or damage to a body structure.Examples of serious adverse events include death, cardiac tamponade, myocardial infarction, stroke, and seizure.

7.2. Adverse Events
An adverse event is any adverse event that results in minimal transient impairment of a body function or damage to a body structure or which does not require any intervention other than monitoring. Examples of an adverse event include skin reaction or headache at the locations where the Vielight Neuro Gamma device makes contact with the subject’s skin.
A pre-existing condition should not be reported as an adverse event unless there has been a substantial change in severity that cannot be attributed to natural history.

7.3. Reporting
As this is a minimal-risk study, no serious adverse events are anticipated. However, any adverse events reported by subjects or observed by the study staff, during the course of the study visit procedures, will be recorded in the subjects CRF along with a brief description and any action taken. All adverse events determined by the principal investigator to be a potential result of study visit procedures, will be reported to the Institutional Review Board and the study sponsor.

8.1. Anticipated Study Timeline
Recruitment Initiation — D0

20 Subjects Recruited — D0 + 4 weeks

Interim Analysis Completed — D0 + 4 weeks +10 days

Study Complete — D0 + 6 weeks

8.2. Criteria for the Termination of the Trial
The study will be terminated upon completion of the recruitment target (N=20) and verification of the data by the study sponsor. The study may also be terminated earlier at the discretion of the sponsor.

8.3. Essential Documentation
The Principal Investigator and other appropriate study personnel will sign the protocol to document their willingness to adhere to this protocol and to conduct the study in accordance with local legal requirements and the International Conference on Harmonization (ICH) guidelines for GCP.
In order to be authorized to initiate the study, the Principal Investigator will ensure the following documentation is obtained:
1. A copy of the dated, documented approval of the IRB to the protocol and any amendments, subject consent forms, advertisements for subject recruitment , subject compensation, and any other documents submitted. The IRB approval should quote version numbers and/or dates of documents reviewed
2. Evidence that the IRB operated in compliance with 21CFR56 (e.g., list of members and affiliations)
3. The Principal Investigator’s current curriculum vitae (CV)
4. A copy of the protocol signed with a statement of interest by the Principal Investigator
All other relevant documents essential prior to study initiation should be placed appropriately in the site’s study master files.

8.4. Subject Confidentiality
The confidentiality of subjects enrolled in this study will be maintained at all times.
All study reports and communications relating to subjects will identify each subject by their subject number and initials only. Investigators will maintain a log enabling them to identify clearly each subject enrolled.

8.5. Quality Control, Quality Assurance, Monitoring
The data from source documents will be entered into CRFs. The data will be subjected to manual review for completeness, logic, accuracy, and consistency. A final monitoring report will be generated demonstrating compliance to the protocol.

8.6. Data Integrity
Data integrity is ensured through monitoring by the sponsor of source document to CRF verification.

8.7. Data Handling and Record Keeping 

8.8.1. Study Finance
Subjects will be provided $100 CAD as compensation for their involvement at the end of the second study visit, following the completion of all study procedures.

8.8.2. Financial Disclosure/u>
The investigator must provide the sponsor with sufficient and accurate financial information to meet regulatory disclosure requirements (21 CFR 54). The investigator will update this information if any relevant changes occur during the investigation and for one year following the completion of the study.

8.9. Publication Policy
All information concerning the sponsor’s operations, such as patent applications, formulae, manufacturing, processes, scientific data, or information supplied to the investigator by the sponsor and not previously published is considered confidential and shall remain the sole property of the sponsor. The investigator agrees to use this information only in accomplishing the study and will not use it for other purposes, without the prior written consent of the sponsor.

Study Sponsor
Lew Lim, CEO, Vielight Inc.
346A Jarvis Street, Toronto, ON  M4Y 2G6
P: 416-795-9778
E: lewlim@vielight.com

Principal Investigator
Reza Zomorrodi, PhD, Research Advisor, Vielight
P: 647-569-3711
E: reza.zomorrodi@vielight.com

Genane Loheswaran, MSc, Research Advisor, Vielight
P: 416-303-3799
E: genane@vielight.com

Janine Liburd, PhD, Research Scientist, Vielight
P: 1-855-875-6841
E: janineliburd@vielight.com

Abhiram Pushparaj, PhD, Regulatory Consultant, IPD
P: 647-244-8066
E: abhi@ironstonepd.com

(2024 Winter) Neuro RX Gamma – Pivotal Phase Trial (Phase III Trial)

Winter Registration Phase

Direct access to information on pilot study on clinicaltrials.gov – [ Study Link (clinicaltrials.gov, U.S. National Institutes of Health) ]

An IRB-approved large study evaluating the feasibility, safety, and efficacy of the Vielight Neuro Gamma for the treatment of moderate-to-severe Alzheimer’s Disease.

Trial Registration
Click here for more information – Link.

The objective of this trial is to determine whether the experimental Neuro Gamma device improves cognitive functioning and quality of life and decreases health services use as compared to a sham device in patients with moderate to severe Alzheimer’s Disease (AD).

Principal Investigator
Dr. Corinne E. Fischer, MD
Director of Memory Disorders Clinic, Geriatric Psychiatry, and Geriatric Mental Health Outreach Program, St. Michael’s Hospital
Adjunct Scientist in the Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael’s Hospital 

Regulatory and Funding Sponsor
Vielight Inc.
346A Jarvis Street Toronto, Ontario M4Y 2G6
Lew Lim, Founder and CEO, lewlim@vielight.com

Methodology Centre
Applied Health Research Centre
The Hub, Li Ka Shing Knowledge Institute St. Michael’s Hospital
30 Bond Street Toronto, ON, M5B 1W8
Stephanie De Masi, demasis@smh.ca

This is a randomized, double-blind, multi-centre trial. The trial will include patients with moderate to severe AD who will be randomized in a 1:1 ratio to active treatment with the Neuro Gamma device, or treatment with a sham device.
The following assessments will be performed during clinic visits at baseline, 12 and 24 weeks and during an extended follow up visit at 52 weeks:
• Severe Impairment Battery (SIB)
• Alzheimer’s Disease Cooperative Study Activities of Daily Living for Severe Alzheimer’s Disease (ADCS-ADL-Sev) scale
• Quality of life using European Quality of Life–5 Dimensions (EQ-5D, proxy version) and the Quality of Life in Alzheimer’s Disease (QOL-AD) scale
• Adverse events (AEs) and serious adverse events (SAEs)
• Resource Utilization in Dementia (RUD) instrument
• Neuropsychiatric Inventory Questionnaire (including Caregiver Distress ratings) at weeks 12, 24 and 52

The Applied Health Research Centre (AHRC) is an Academic Research Organization at the Li Ka Shing Knowledge Institute of St. Michael’s Hospital, with expertise in clinical research methodology and operations. The AHRC has experience managing more than 50 multi-site, national and international clinical trials and observational studies, and has grown to be one of the largest AROs in Canada.

The AHRC will work closely with the study Investigator(s) to manage this clinical trial, including site selection and site management, study training, study documentation, and project communications. AHRC will coordinate data management activities and will be responsible for developing electronic case report forms (eCRFs), performing data validation activities, providing data outputs and performing statistical analyses.

The AHRC employs industry-leading web-based secure database technology (REDCap and Medidata RAVE™) which incorporate advanced data validation and reporting tools, and allow for faster access to trial data than traditional paper-based data collection tools. Our electronic databases have built-in web-based study randomization tools, and can link with other data systems (e.g. laboratory information systems) to facilitate automatic upload of clinical data to minimize manual entry. The AHRC is using electronic data capture software to manage data for over 30 studies, including more than 20 CIHR-funded multi-centre trials.

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