This year is the centennial anniversary of German psychiatrist Hans Berger's invention of electroencephalography (EEG), a way to record electrical activity in the brain, now called brainwaves or ...

Theta waves are one of the five types of electrical pulses your brain produces. They tend to happen when you’re lightly sleeping, dreaming, or in a state of deep relaxation. Experts believe they play ...

Your brain is a busy place. Brain waves are, essentially, the evidence of electrical activity produced by your brain. When a group of neurons sends a burst of electrical pulses to another group of ...