How RLT Enhances Cognitive Function

Photobiomodulation, commonly referred to as RLT, is being investigated for its role in treating neurodegenerative diseases, alongside its other applications.

Mouse Models and Experimental Findings

In 2015, Li-Huei Tsai initiated a groundbreaking study involving genetically modified mice that produce amyloid-B plaques, which are associated with Alzheimer's. These mice were exposed to a flickering light at 40 Hz for one hour each day. Upon completion of the study, the brains of these mice were examined alongside a control group that did not receive the light treatment. Remarkably, the treated mice showed a significant reduction in amyloid plaques.

EEG Brainwaves: A Window into Brain Activity

The concept of brainwaves was pioneered by Hans Berger in 1929 when he recorded electrical activity in the brain using electrodes. Today, EEG technology allows us to observe various brainwave patterns defined by their frequency:

• Delta: 0.5–4 Hz — Related to deep sleep.
• Theta: 4–8 Hz — Linked to meditative states.
• Alpha: 8–13 Hz — Associated with relaxed wakefulness.
• Beta: 13–32 Hz — Reflects normal, alert consciousness.
• Gamma: 25–140 Hz — Connected to visual processing and REM sleep.

It's important to note that the brain utilizes multiple frequencies simultaneously, with one often dominating, much like a leading instrument in an orchestra.

Neurodegenerative Diseases and EEG Patterns

The presence of neurodegenerative diseases alters EEG patterns. For instance, Parkinson's disease is characterized by increased beta waves, while Alzheimer's patients often exhibit diminished gamma waves.

The Impact of 40 Hz on Amyloid Clearance

Tsai's research suggests that the 40 Hz light may activate microglia in the brain, which play a crucial role in clearing amyloid-B. In their experiments, one hour of exposure to 40 Hz light resulted in a noticeable reduction of amyloid formation for up to 24 hours. Furthermore, when older mice with substantial amyloid buildup were treated for a week, there was a remarkable 67% reduction in plaque levels within the visual cortex.

The Role of Sound in Cognitive Health

Bi-aural beats, a method utilizing sound frequencies played through stereo channels, can also influence brainwave states. For example, a frequency shift of 8–13 Hz can help induce alpha brainwave activity conducive to meditation. This technique has been shown to enhance delta wave amplitude during sleep, resulting in improved memory recall.

Current Research and Human Trials

In 2018, initial human trials commenced with six individuals diagnosed with mild to moderate Alzheimer's. Participants received two one-hour sessions of 40 Hz light therapy daily for ten days. While no significant differences in amyloid plaque levels were observed post-treatment, it is essential to recognize that ten days is a relatively short duration, and long-term studies are ongoing.

Cautionary Note

For those considering home experimentation, it's vital to note that LED lights flashing at gamma frequencies can trigger seizures in individuals with photosensitive epilepsy.

Combining Therapies for Enhanced Results

Given the established benefits of RLT in treating neurodegenerative diseases, combining 40 Hz light therapy with RLT could yield even greater therapeutic effects. I recommend exploring near-infrared light (NIR) in the wavelength range of 800 to 1024 nm, applied at 40 Hz to the skull or body. Many clinical studies have reported positive outcomes using RLT at an 810 nm wavelength.

More Resources on Red Light Therapy

I have authored a book titled "Living Younger Longer Using Red Light Therapy," available on Amazon. For various formats, including ePub, PDF, and print, please visit my website:

Disclaimer

The information provided in this article is intended for informational purposes only and should not be considered a substitute for professional medical advice. The author, John Iovine, shares his research insights based on reliable sources. However, the accuracy of referenced information may change over time, and the author disclaims any responsibility for such updates or modifications.