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A new study sheds light on the potential of non-invasive interventions, including light, sound, and magnets, to stimulate gamma brain waves as a promising treatment for Alzheimer’s disease.
According to Medical Xpress, the focus on gamma brain waves is significant as Alzheimer’s is associated with reduced fast brain oscillations in the gamma range, which spans from 30 to 100 Hz.
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Inducing 40 Hz Brain Activity
The review emphasizes recent studies demonstrating the feasibility and safety of inducing 40 Hz brain activity in Alzheimer’s patients through various non-invasive methods. Preliminary evidence indicates these methods could positively affect brain function, disease pathology, and cognitive function.
Corresponding author, Dr. Li-Huei Tsai of MIT, explains that the increased gamma activity resulting from non-invasive 40 Hz sensory stimulation significantly alters the cellular state of various glial cell types in the brain.
Ongoing investigations aim to uncover the precise mechanism by which 40 Hz brain activity recruits diverse cell types, providing neuroprotective effects.
The study discusses the therapeutic potential of gamma stimulation in treating Alzheimer’s disease and delves into possible mechanisms responsible for its positive effects.
Several techniques are explored in the review, including 40 Hz light, auditory, and vibrotactile stimulation and non-invasive ones such as transcranial alternating current and transcranial magnetic stimulation.
These methods aim to induce gamma brain activity and show promise in enhancing connectivity, supporting cognitive function, and addressing disease pathology in Alzheimer’s patients.
Preclinical Evidence
The review also touches upon preclinical evidence related to both neuronal and non-neuronal mechanisms involved in the beneficial effects of gamma stimulation. It explores the roles of microglia, astrocytes, and vasculature in mediating these effects on brain function.
The study also highlights the remarkable progress in the field of gamma stimulation, expanding from optogenetic and visual stimulation in mice to various multimodal stimulation paradigms in humans. The advantages of multimodal stimulation include more widespread engagement of the brain and potential supralinear dynamics of brain activation.
While studies on sensory gamma stimulation suggest safety and promising results for Alzheimer’s symptoms and pathology, the review underscores the need for more extensive clinical studies with extended treatment durations and blinded, placebo-controlled methodologies to validate these findings.
The ongoing research aims to enhance the efficacy of gamma stimulation and explore its broader applications.
“The next generation of studies on gamma stimulation is already underway. Most importantly, larger clinical studies are required to ascertain the long-term benefits of gamma stimulation. In animal models, the focus should be on delineating the mechanism of gamma stimulation and providing further proof of principle studies on what other applications gamma stimulation may have,” the authors wrote in their study.
The review was thoroughly detailed in the Journal of Internal Medicine.
Related Article: [STUDY] Nose-Picking Could Increase Alzheimer’s Disease Risk; Other Daily Habits That Can Lead to Dementia
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