You’ve heard the “om” sound yogis make when they meditate, right? Well, Joshi says using a buzzing sound is another way to use your voice to calm yourself in the midst of a freakout. “Bhramari, a humming bee sound, can be done by closing the eyes and making the humming sound like a bee,” she says. “These sound vibrations calm down the thought waves and relax the entire nervous system. External sound frequency resonates with the internal rhythm of the body and mind, creating peace and tranquility within.” Research from India has shown Bhramari to improve cardiovascular patterns. Press your ears closed for an even stronger vibration.

Delta brainwaves are produced and associated with states of deep sleep and healing. Stress slips away very easily in this state. Sleep is deep and dreamless. The Delta state has been noted as having a good effect in terms of healing on both the adrenal and limbic systems. Something which in turn has led to it’s perceived positive effect on conditions such as PTSD.
In their earlier experiments, the scientists had detected connections between neurons from organoids and neurons from the mouse brain, but they could not tell  whether or not the neurons could actually communicate with one and  other. Optogenetics is an extremely clever technique that uses light to  control neurons. By using this technique, the researchers were able to  specifically stimulate the neurons in the organoids by turning on and  off a light. When the light was on, the neurons of the organoids became  electrically active. When they used electrodes to measure the activity  of neurons outside the organoid in another part of the mouse brain, they  were able to detect electrically activated neurons there too, showing  that organoid neurons could signal to host neurons.
I can offer a hypothetical--however do not know know practical it will turn out to be. There is a fair amonut of bad science on this topic on you tube. The gamma wave frequency is associated with attentional focus and arguably a unified sense of self. If it could be entrained it should lead to a meditative focus-like exceptionally well-trained meditators. Some but not all studies on meditating Buddhist monks suggest this is so. Does this really and more generally occur--I will say there is nothing lost in trying--we all go into a 40Hz range on occasion without ill effect-- but I would not put confidence in the purported methods out there at present. Good luck.
Fortified milk is an excellent source of vitamin D, a nutrient that might boost happiness. A 50-year-long study by London's UCL Institute of Child Health found an association between reduced levels of vitamin D and an increased risk of panic and depression among 5,966 men and women. People who had sufficient vitamin D levels had a reduced risk of panic disorders compared to subjects with the lowest levels of vitamin D. Other foods high in vitamin D include salmon, egg yolks, and fortified cereal.
After the illness, I returned to school and found out that I couldn’t understand what the teacher was saying. Or what people were saying to me in general. Then I had difficulty comprehending math (which I was excellent at before). Then my reaction time just CRASHED. I was also classified by new teachers as “flighty”, “in a dream world”, “not mentally engaged”, as my brain began to stay in a state of sleepy-but-unable-to-sleep mode.
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