I've recently taken up the study of neurology, and I was wondering if you could create a device that would input gamma waves into your brain. And if it would be safe. Suppose you had a device that you wore sort of like a headband, and it emitted gamma waves and focused them into your brain. Would this be safe, if at low power? And would it increase focus/awareness?
I am fairly certain that the question is not about electromagnetic gamma light radiation, but rather about the gamma frequency brain waves. While we do not "inject gamma waves" we can stimulate brain activity at gamma level frequencies through the use of sensory stimulation that occurs at such a frequency. There has been research done with people who have Alzheimer's and the use of lights that turn off and on at the same frequency as Gamma waves.
Here are the respective wikipedia articles that concern gamma waves vs gamma rays respectively https://en.wikipedia.org/wiki/Gamma_wave vs https://en.wikipedia.org/wiki/Gamma_ray#:~:text=A%20gamma%20ray%2C%20or%20gamma,imparts%20the%20highest%20photon%20energy.
I found the following articles about the use of gamma frequency stimulation in Alzheimer patients.
Here is a link to an article: https://www.nia.nih.gov/news/noninvasive-brain-wave-treatment-reduces-alzheimers-pathology-improves-memory-mice#:~:text=Previously%2C%20researchers%20at%20the%20Massachusetts,also%20boosted%20the%20activity%20of Noninvasive brain wave treatment reduces Alzheimer's pathology, improves memory in mice
Here is an article that mentions the use of sound waves at a gamma frequency too.
https://www.alzforum.org/news/research-news/flash-beep-gamma-waves-stimulate-microglia-memory Flash! Beep! Gamma Waves Stimulate Microglia, Memory
Q: Could you inject external gamma waves into your brain safely?
A: Yes, nowdays we can inject external gamma waves into the brain safely, and the procedure has been done routinely in many advanced neuroradiosurgical clinics for decades now – it’s called Gamma Knife or Gamma Knife Radiosurgery.
But the procedure isn’t done to increase focus or awareness – there’s no theoretical background or experimental evidence for that. Instead, the procedure is done to precisely remove a pathologic lesion, such as tumor, arterovenous malformation, and epileptic focus.
This procedure is the procedure of choice when the conventional neurosurgery cannot be performed due to fact that the lesion is too deep down in the brain or too near a vital structure (such as in the middle of the brainstem) or that the patient's age or medical conditon wouldn't allow a conventional neurosurgical procedure.