Hello. I am doing a project in school on brainwaves so I can tell you all I know about it. From what I know about brainwaves, the waves are caused by neurons by a process called action potential. Action potential is what creates the wave. In order to get into action potential, you need some type out stimulus to trigger the brain reaction. Most of the time, the neuron is at resting potential, which has a charge of -70 mV (milivolts). This charge is caused by isotopes from different elements in the neurons. The most common isotopes are sodium, potassium, calcium, and chlorine. When the stimulus is triggered, the charge decreases up to -55 mV before action potential starts. When it starts, the sodium ports of the cell open up and all the sodium rush into it because the cell has a negative charged and sodium has a positive charge. Soon, too much sodium rushes into the cell so the sodium ports close and the potassium ports open, which also has a positive charge, so they rush out of the cell, trying to balance it, but it drops down to -70 mV. This all happens in .005 seconds (5 milliseconds). This also happens simultaneously between multiple different neurons at the same location. There are trillions of neurons inside the human body. So when you say a brain wave is being blocked, that can't be correct because medication can't control brainwaves, but you must mean the different ports in your brain. Each section of the brain branches off and from the central nervous system, which is where neurons come from and to. When the certain chemicals like dopamine and seratonin go to the brain, it causes certain things to happen. Well, normally it should keep you functioning, but if levels are low, then it can cause things like depression, anxiety, and even AD/HD. When the chemical is added into your body, the neurons have more of the chemical added in, which is sending it to the brain I think. It could be that the chemical blocks ports in a section of the brain, mainly the prefrontal cortex, I'm not sure. But anyways, because of more or less of the chemical in your body, it makes the brain back to "normal". I think people with AD/HD lack the chemical, so I am not sure why the chemical would block the ports, but I'm not entirely sure. Anyways, so this is what the medication should do. Sorry this was really long to explain, but if you have more questions, ask me. Hope this helps.

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