What Are Brainwaves? A Beginner’s Guide to the Brain, Mind, and Soul
I remember a time when I went to the hospital because I had a headache and couldn't understand why. I suspected that work-related stress might have been the cause. The doctor asked me to undergo an electroencephalogram, or EEG, to measure the electrical activity in my brain. After reviewing the results, the doctor suggested that stress might be contributing to how I felt, and the test had not revealed an obvious problem.
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