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Light Dose Database

Search for red light therapy studies on specific health conditions:

Red light therapy brain dose

627 nm Transcranial Red Light Increases Cranial Artery Blood Velocity

In a 2015 study, 25 healthy elderly women received 627 nm transcranially at four sites, two times per week for ...
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Red light therapy brain dose

810 nm Infrared Transcranial LED Treatment Corresponds with Decreased Depression Scores

Ten patients with Major Depressive Disorder (MDD) received 810 nm LED treatment transcranially at 60 J/cm^2. Researchers measured decreased depression ...
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Red light therapy brain dose

850 nm Transcranial Infrared LED Improves Attentional Performance

39 healthy volunteers received 60 J/cm^2 of 850 nm infrared LED transcranially. They experienced improved attentional performance in the Go/No ...
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Red light therapy brain dose

903 nm Transcranial Infrared LED Light Improves qEEG Reaction Time

In a 2017 study, 31 healthy volunteers received 903 nm LED LumiWave light transcranially. They experienced improved reaction time in ...
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Red light therapy brain dose

Alzheimer’s Vielight 810 nm Red Light Dose

Vielight administered transcranial and intranasal 810 nm to Alzheimer's patients for 12 weeks. Tests at 6 and 12 weeks showed ...
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Red light therapy brain dose

Better Reaction Time in Concussion Patients Red Light Dose

903 nm, 16.67 mW/cm^2, 240 s/site, 20 J/cm^2, 1200 s, 5 sites simultaneously using a cap to the occipital, left ...
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Red light therapy brain dose

Chronic TBI Infrared Laser Transcranial Treatment

10 chronic TBI patients received 810 nm and 980 nm infrared laser treatment of 14.8 to 28.3 J/cm^2 2 to ...
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Red light therapy brain dose

Chronic Traumatic Brain Injury, Depression, PTSD, Social Anxiety Transcranial LED Treatment

11 chronic traumatic brain injury patients were treated with 633 nm and 870 nm infrared three times per week for ...
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Red light therapy brain dose

Improve Coma Patient Alertness after 785 nm Transcranial Laser Treatments

16 comatose patients received 785 transcranial 785 nm infrared laser treatments five timers a week for four weeks. Post treatment ...
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Red light therapy brain dose

Improved Brain Oxygenation Red Light Dose

1064 nm, 250 mW, 600 s, 150 J/cm^2 improved brain oxygen supply. Improve brain oxygen supply ...
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Red light therapy brain dose

Increase Brain Blood Flow in Vegetative Patient Red Light Dose

830 nm, 11.4 mW/cm^2, 1800 s, 2/day/73 days (146) improved blood flow and correlated with patient regaining cognition. 850 nm ...
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Red light therapy brain dose

Increased Brain Blood Flow Red Light Dose

627 nm, 70 mW/cm^2, 10 J/cm^2, four points of the frontal and parietal region for 30 s each (120 s), ...
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Red light therapy brain dose

Infrared Sinus Delivery the Most Efficient Choice to Stimulate the Brain

Researchers tested 671 nm and 808 nm 1 mW/cm^2 laser photon delivery in a severed cadaver head. They compared sinus ...
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Red light therapy brain dose

Infrared Transcranial Treatment Improves Vigilance, Memory and Mood Scores

In a 2013 study researchers irradiated 40 healthy volunteers with 60 J/cm^2 1064 nm continuous laser light for 4 minutes ...
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Red light therapy brain dose

Invasive Femoral Artery Laser Fiber Optic Irradiation Improves Alzheimer’s Symptoms

89 Alzheimer's patients received a range of wavelengths in the visible spectrum (25-1000 nm) for 20 to 40 minutes, with ...
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Red light therapy brain dose

Keto Diet and Alzheimer’s Red Light Dose

increased hyptohalmic and peripheral insulin sensitivity, lowered HgA1c; normalization of blood lipid panel; improved memory including HOMA-IR decreasing from 4.67 ...
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Red light therapy brain dose

Laser Infrared on Palm Changes Brainwave Amplitude

Wu et al. 2012 [] Healthy volunteers (40) Laser, 6 diodes, Advanced Chips & Products Corp. (Hillside, NJ, USA) 830 ...
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Red light therapy brain dose

Near Infrared Transcranial Treatment Improves Some Disorder of Consciousness Patients

Non-invasive brain stimulation to promote alertness and awareness in chronic patients with disorders of consciousness: Low-level, near-infrared laser stimulation vs ...
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Red light therapy brain dose

Parksinson’s Mobility, Balance and Cognition Improvements with Brain Photobiomodulation

Vielight Gamma 4 LEDs, 240 joules, four transcranial targets Vielight Gamma 1 LED, 15 joules, one intranasal target Irradia MID ...
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Red light therapy brain dose

Red and Infrared LED Treatment for Traumatic Brain Injury, Depression and PTSD Case Report

Two Chronic Traumatic Brain Injury (TBI) patients who also had depression or post trauamtic stress disorder (PTSD) symptoms  received 633 ...
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Red light therapy brain dose

Red Light Halts Brain Memory Tissue Damage

A 2019 study in Scientific Reports showed that 660 nm photobiomodulation reduces oxidative stress and induces BDNF expression in the ...
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Red light therapy brain dose

Reduce Cognitive Decline Biomarkers Red Light Dose

1064 nm, 250 mW/cm^2, 480 s, 60 J/cm^2, 240 s per site, 2 sites, 1/week/5 weeks: Improve memory and increase ...
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Red light therapy brain dose

Reverse Cognitive Decline Red Light Dose

2x/day Week 1: 635 nm and 810 nm combined, continuous wave, transcranial helmet, and body pad on lower back, simultaneous ...
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Red light therapy brain dose

Severe Brain Damage Transcranial Laser Brings Improvement, Epileptic Fits

Five traumatic brain injury patients with cognitive disabilities received transcranial 785 nm infrared laser 5 times per week for 6 ...
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Red light therapy brain dose

Significant Gulf War Illness (Chronic Multisymptom Illness) Improvements after 12 Weeks of Vielight Neuro Alpha Treatment

Improvements in Gulf War Illness Symptoms After Near-Infrared Transcranial and Intranasal Photobiomodulation: Two Case Reports Chao 2019 MilMed Researchers tested ...
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Red light therapy brain dose

Stroke Improvement on N=1 Patient Receiving 660 nm Red and 850 nm Infrared Therapy

A stroke victim received 660 nm and 850 nm irradiation to 32 sites on the head, brainstem, spine and musculature ...
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Red light therapy brain dose

Therapy Results Similar to Aerobic Exercise Red Light Dose

1064 nm, 250 mW/cm^2, 240 s per site, 2 forehead sites, 60 J/cm^2 attained psychomotor vigilance task and working memory ...
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Red light therapy brain dose

Transcranial 1064 nm Infrared Treatment Improves Depression

51 patients with elevated depression symptoms received 1064 nm infrared transcranial laser treatments over two sessions. Researchers concluded that "right ...
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Red light therapy brain dose

Transcranial 808 nm High Dose Infrared Significantly Improves Major Depressive Disorder Rating Scores

4 Major Depressive Disorder (MDD) patients received 808 nm infrared laser treatment at 84 J/cm^2 at 4 sites transcranially. At ...
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Red light therapy brain dose

Transcranial 808 nm Infrared Laser Treatment Improves Stroke Outcomes Not Repeatable

120 acute stroke patients received 808 nm transcranial laser within 24 hours of onset. Each received 1.2 J/cm^2 at the ...
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Red light therapy brain dose

Transcranial 850 nm Infrared Treatment of Vegatative Patient Yields Blood Flow and Neurological Improvement

A researcher treated a vegatative patient with 850 nm infrared LED 20.5 J/cm^2 for 30 min, 2 times per day, ...
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Red light therapy brain dose

Transcranial Infrared Improves Executive Function Scores

Blanco et al. 2015 [] Healthy volunteers (30) Laser, Cell Gen Therapeutics, LLC (Dallas, TX, USA) 1064 nm 250 mW/cm2, ...
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Red light therapy brain dose

Transcranial Infrared Increased Brain Blood Oxygenation

In a 2016 study 12 healthy volunteers were irradiated with a 1064 nnm laser light dose of 13.75 J/cm^2 per ...
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Red light therapy brain dose

Transcranial Infrared Treatment Improves Pre-Frontal Rule Based Learning

Blanco et al. 2017 [] Healthy volunteers (118) Laser, CG-5000, Cell Gen Therapeutics, LLC (Dallas, TX, USA) 1064 nm 250 ...
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Red light therapy brain dose

Traumatic Brain Injury Anxiety and Depression Red Light Dose

810 nm, 10 treatments over 2 months, 13.2 W/0.89 cm^2 or 810 nm and 980 nm, 9W/0.89 cm^2  symptoms of ...
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Red light therapy brain dose

Traumatic Brain Injury Lesion Red Light Dose

Transcranial Photobiomodulation Therapy in the Cognitive Rehabilitation of Patients with Cranioencephalic Trauma https://www.liebertpub.com/doi/10.1089/photob.2019.4683 3x/week/6 weeks (18) 30 min session "Alteration ...
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Red light therapy brain dose

Traumatic Brain Injury Red Light Dose

Improve cognition and memory in chronic TBI patients using 61 diodes: 9x633 nm, 52 x 870 nm; 12-15 mW/diode; 500 ...
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Red light therapy brain dose

Vielight 810 and Neuro Intranasal and Transcranial Infrared LED Significantly Decreases Dementia Symptoms

A 2017 study in Photomedicine and Laser Surgery found improved dementia symptoms after 810 nm infrared transcranial and intranasal irradiation ...
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Red light therapy brain dose

Vielight Treatment Measurable Brain Improvements in N=1 Traumatic Brain Injury Patient

One 23-year old traumatic brain injury patient complained of headaches, anxiety, and difficulty concentrating. He home-treated with a Vielight Neuro ...
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Red light therapy brain dose

Whole Head Infrared LED Treatment Significantly Improves Dementia Measurements

11 dementia patients received 1060 nm to 1080 nm infrared pulsed at 10 Hz LED treatment for 6 minutes a ...
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Search the Photobiomodulation Database for studies on health conditions:

This is the EMF Channel database of light therapy study doses. After getting the results, click to view more study details. Only successful studies are included. 99% of the studies here are on humans, not animals. This database is a work in progress. Many thanks to Vlad for his PBM database. When the data here references his work, the detail page includes a link to the PBM spreadsheet.

About the EMF Channel Light Dose Database

Many people purchase red light therapy or neuromuscular electrical stimulation devices without knowing optimal doses for the results they want to see. The right dose is especially key to light therapies, which have optimal windows of wavelength and energy delivered. Treatment doses outside of those windows will nullify results or harm the user. I took the results from successful EMF studies when these studies included:

  • Photobiomodulation (Red Light Therapy, Blue Light Therapy, Low Level Light Therapy)
  • Transcutaneous Electromagnetic Nerve Stimulation (TENS)
  • Pulsed Electromagnetic Field (PEMF) Therapy
  • Neuromuscular Electrical Stimulation (NMES)

Many studies do not report exact dose parameters they used. They are therefore not included here, even the study reported a therapeutic result.

Table: Light Dose Parameters

Term

Parameter

Time

Seconds

Power

Milliwatts (mW) or Watts (W)

Total Dose Energy

joules (J) = power x time = Watts x seconds

Wavelength

Nanometers (nm)

Frequency

Hertz (Hz)

Spot Size

Squared Centimeters (cm^2)

Duty Cycle

Percentage of time light source is on per cycle

Power Density

Watts per centimeters squared (W/cm(2) = power / probe size

Fluence

Joules per Centimeters Squared (J/cm^2) = total energy delivered by the probe size

Source: Turchin, Curtis. Light and Laser Therapy: Clinical Procedures 6th Edition (p. 16)