Optical Studies

Look through the institutional studies inspiring Healyan to be an all-in-one platform for improved sleep, relaxation, focus, memory and problem solving.

Increased Sleep Quality & Time

40 Hz light flickering significantly improves sleep quality by increasing extracellular adenosine levels in the brain. This non-invasive technique was shown to extend sleep time and reduce the onset latency (time to fall asleep) in children with insomnia, offering a novel approach to treat sleep disturbances affecting up to 20% of the global population.

Study Results

    • Total Sleep Time (TST) increased 63.5 minutes.
    • Sleep Efficiency improved 9%.
    • Sleep Onset Latency dropped by 19 minutes
    • Wake Time After Onset decreased 25.5 minutes.
    • REM Sleep Onset Latency fell by 48.9 minutes
    • REM sleep increased from 18.5% to 19.4%.

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    • Survey methodology: Controlled experiemnt provided by Zhou Xuzhao, et al. (PhD & researcher at Wenzhou Medical University), approved by the Institutional Ethics Committee

Improved Focus & Concentration

Stroboscopic visual training (SVT) is correlated with a significant enhancement in visual and perceptual skills, including a notable 9 out of 10 measured increase in visual response time. Results could possibly have broader applicability beyond sports, enhancing cognitive performance in various activities.

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Survey methodology: Controlled experiment provided by Dr Luke Wilkins (PhD & lecturer at Newcastle University and Nottingham Trent University), approved by the faculty of Medical Sciences Research Ethics Committee.

Stress & Anxiety Reduction

This study investigates the effects of brain wave entrainment (BWE) on heart rate variability (HRV), specifically focusing on alpha brain stimulation in ten individuals aged between 20 to 70 years. The findings indicate significant improvements in HRV metrics post-treatment, demonstrating the potential benefits of BWE for stress and anxiety reduction.

Study Results

    • Total HRV variability increased by 20% to 68%.
    • This reflects overall heart health improvement.
    • Parasympathetic improvements 38% to 73%.
    • Heart rate reductions heart by 9%
    • This promotes a calmer physiological state.


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    • Survey methodology: Controlled experiment provided by Casciaro, Francesco, et al. (PhD researchers within the Department of Neurological Sciences and Division of Psychology and Language Sciences University College, London).

Efficient Problem Solving

This study finds that high frequency lighting led subjects to report a more pleasant mood. This improved mood, in turn, positively affected their problem-solving abilities. The research highlights the influence of sensory processing outside of conscious awareness on emotional and cognitive outcomes, suggesting that a positive affect, induced by sensory environments, can enhance cognitive functions like problem solving.

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Survey methodology: Controlled experiment provided by Knez, Igor (PhD & Professor at the University of Gävle, Department of Social Work and Psychology).

Improved Memory

This study investigates the efficacy of Stroboscopic Visual Training (SVT) in improving visual and motor functions, highlighting its potential benefits for individuals with visual impairments due to neurological conditions.

Study Results

    • Enhanced short-term memory capacity.
    • Better recall of short term visual information.
    • Improvement in central field motion sensitivity.
    • Increased processing speed,
    • Quicker interpretation to visual stimuli.
    • Improved eye-hand coordination.

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    • Survey methodology: Controlled experiment provided by Morris, Rosie, et al. (PhD & As. Professor at the Northumbria University, supported by the British Geriatric Society Movement Disorder Research Grant)

Quality Relaxation & Socialization

This study explored the efficacy of rhythmic photic stimulation using LEDs at alpha frequencies (9–11 Hz) as a non-pharmacological treatment for depression-like behaviors. The mice results indicate that such stimulation significantly improves mood associated with depression, anxiety, and social interaction to levels comparable with, or better than, those observed with the antidepressant fluoxetine.

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Survey methodology: Controlled experiment provided by Kim, Shinheun, et al. (PhD & Professor at the Laboratory for Neurotherapeutics, Department of Neurology, Comprehensive Epilepsy Center, Biomedical Research Institute).

Better Grade Sleep

In a promising study from the University of Southern Santa Catarina, Brazil, preliminary results suggest that Audio-Visual Brain Entrainment (ABE) might enhance sleep quality among university students. Significant improvements in sleep quality were observed, as evidenced by the Pittsburgh Quality of Sleep Index (PQSI, p<0.05). These initial findings offer an optimistic glimpse into ABE's potential benefits on sleep, warranting further exploration in larger-scale studies.

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Survey methodology: Controlled experiment provided by Cristina Salm, Daiana, et al. (PhD & Researcher at the Laboratory for Neurotherapeutics, Experimental Neuroscience Laboratory (LaNEx), University of Southern Santa Catarina).