Inside your brain
So what’s going inside there? .. what happens when you think, move, blink , smile …etc?
Well .. let’s see ..
Each action inside your brain is associated with a certain intensity measured in micro voltage .. electricity! .. yeah this is how it goes..
So when you think in a certain action, perform a muscular movement or even have a certain feeling [Sad, Happy .. etc], your brain fires a series of signals with an intensity that corresponds to this action.
Brain Rhythms:
EEG Signals are grouped into 5 categories based on their frequencies:
- Delta waves (0.5-4 Hz): Mainly associated with sleeping.
- Theta waves(4- 7.5 Hz): They fire when your consciousness slips towards drowsiness, in other words when you feel sleepy or even when you get a short nap.
- Alpha waves (8-13 Hz): Relaxed awareness without attention or concentration.
- Beta waves (14-26 Hz): Active thinking and attention
- Gamma waves (30 – 45 Hz): They often detect occurences of diseases.
Source: EEG Signal Processing, Saeid Sanei and J.A. Chambers
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