What exactly are “brainwaves” and do they work the same way as, say, radio waves?

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What exactly are “brainwaves” and do they work the same way as, say, radio waves?

In: Biology
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Brain waves represents the rhythmic activity of neurons. This is an electrical signal as it largely involves the movement of charge.

Radiowaves are electromagnetic radiation like visible light or microwaves, or ultraviolet light or gamma rays

When neuron fire, they generate electric signal, and when you THINK thats a whole lot of neurons generating a whole lot of signal, which produces a very weak electromagnetic radiation, the radiation is a wave like form that can be detected via sensors.

So yes, in a sense brain wave ARE radio waves, just very, very, very, weak.

In the brain there are an extremely large amount of neurons. Within the neurons and outside of the neurons there are substances that are positively or negatively charged, creating an electric potential that drives neuronal activity. The combined electrical activity of thousands of neurons creates a ripple effect that spreads towards the skull. If you put electrodes on top of the skull, which is called an electroencephalogram, they will be pushed and pulled by the combined electrical activity of neurons. This pushing and pulling of the electrodes is what we have called “brain waves”.