There are some other posts with these "40Hz articles", and sometimes it comes out as 80Hz too. But for real what the hell is going on? How is this only now becoming a thing?
Also, people suffering from epilepsy, and the rest of the people who think it's a good idea to help them, have been consistently discovering one crazy thing after another, proving why we, as humans, are supposed to spend valuable resources helping people no matter who they are.
How 40Hz sensory gamma rhythm stimulation clears amyloid in Alzheimer's mice
Feb 2024, phys.org
"Ever since we published our first results in 2016, people have asked me how does it work? Why 40 Hz? Why not some other frequency?"They first replicated the lab's prior results that 40 Hz sensory stimulation increases 40 Hz neuronal activity in the brain and reduces amyloid levels, then measured increases in cerebrospinal fluid in the brain tissue of mice treated with sensory gamma stimulation compared to untreated controls, and also measured an increase in the rate of interstitial fluid leaving the brain.
via Massachusetts Institute of Technology and The Picower Institute: Li-Huei Tsai, Multisensory gamma stimulation promotes glymphatic clearance of amyloid, Nature (2024). DOI: 10.1038/s41586-024-07132-6.
New brain stimulation technique shows promise for treating brain disorders
Feb 2024, phys.org
Non-invasive brain stimulation method called Patterned Low-Intensity Low-Frequency Ultrasound (LILFUS), which is based on specific ultrasound parameters that mimic the brainwave patterns of theta (5 Hz) and gamma (30 Hz) oscillations observed during learning and memory processes.The new tool allowed the researchers to either activate or deactivate specific brain regions at will - intermittent delivery of the ultrasound was found to induce long-term potentiation effects, while continuous patterns resulted in long-term depression effects.One of the most promising aspects of this new technology is its ability to facilitate the acquisition of new motor skills. When the researchers delivered ultrasound stimulation to the cerebral motor cortex in mice, they observed significant improvements in motor skill learning and the ability to retrieve food.Interestingly, researchers were even able to change the forelimb preference of the mice. This suggests potential applications in rehabilitation therapies for stroke survivors and individuals with motor impairments.
But....it would also suggest...
via Center for Cognition and Sociality in the Institute for Basic Science: Ho-Jeong Kim et al, Long-lasting Forms of Plasticity through Patterned Ultrasound-induced Brainwave Entrainment, Science Advances (2024). DOI: 10.1126/sciadv.adk3198.
Brain waves found to travel in one direction when memories are made and the opposite when recalled
Mar 2024, phys.org
By carefully monitoring neural activity of people who were recalling memories or forming new ones, the researchers managed to detect how a newly appreciated type of brainwave—traveling waves—influences the storage and retrieval of memories."Broadly, we found that waves tended to move from the back of the brain to the front while patients were putting something into their memory,""When patients were later searching to recall the same information, those waves moved in the opposite direction, from the front towards the back of the brain"The study drew on data from participants who were being treated for drug-resistant epilepsy at hospitals across the United States.
via Columbia University School of Engineering and Applied Science: The direction of theta and alpha travelling waves modulates human memory processing, Nature Human Behaviour (2024). DOI: 10.1038/s41562-024-01838-3.
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