EEG Sensor
An EEG sensor (Electroencephalogram sensor) is a device used to record electrical signals from the brain. These signals are produced by neurons communicating in the brain and are measured on the scalp using specialized sensors or electrodes.
Working
1. Electrodes Placement:
Small sensors (electrodes) are placed on the scalp. These electrodes detect tiny voltage changes caused by brain activity.
2. Signal Amplification:
Brain signals are very weak, so they are amplified to make them measurable.
3. Data Processing:
The signals are filtered to remove noise (like muscle movement) and processed to analyze brain wave patterns.
4. Output:
The data is displayed as waveforms, showing brain activity over time.
Applications
1. Medical Use:
- Diagnosing epilepsy, sleep disorders, and brain injuries.
- Monitoring anesthesia during surgeries.
2. Brain-Computer Interfaces (BCI):
- Allowing people to control devices (e.g., wheelchairs, prosthetics) with their brain activity.
3. Education and Training:
- Used for neurofeedback therapy to improve focus, reduce stress, or enhance learning.
4. Research:
- Studying cognitive processes, emotions, and brain functions.
5. Gaming and Consumer Devices:
- EEG headsets like Neuro Sky or Emotive Insight let users control games or apps using brain signals.
6. Mental Health:
- Tracking stress, attention, or meditation states.
