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Topic starter 02/08/2025 10:44 pm
🧲 Magnetoencephalography (MEG) is a powerful, non-invasive brain imaging technique that maps brain activity by detecting the magnetic fields produced by electrical currents in neurons.
🧠 How It Works
- Neurons communicate via tiny electrical impulses.
- These impulses generate magnetic fields, which MEG captures using ultra-sensitive sensors called SQUIDs (Superconducting Quantum Interference Devices).
- The sensors are housed in a helmet-like device that records brain activity with millisecond precision.
🧪 What MEG Measures
- Spontaneous brain activity: Useful for identifying abnormal patterns, such as those linked to epilepsy.
- Evoked responses: Tracks how the brain reacts to stimuli like sounds, images, or touch.
🧰 Clinical & Research Uses
| Application | Purpose |
|---|---|
| Epilepsy Surgery Planning | Pinpoints seizure origins to guide precise surgical intervention |
| Brain Tumor Mapping | Identifies critical functional areas to avoid during tumor removal |
| Cognitive Neuroscience | Studies perception, language, and motor functions in real time |
| Psychiatric Research | Explores brain dynamics in conditions like depression or schizophrenia |
🌟 Why MEG Stands Out
- No radiation or injections—completely safe and painless.
- Offers higher temporal resolution than MRI or CT scans.
- Can detect activity deep within the brain, not just on the surface.
MEG is like a magnetic stethoscope for the brain—quietly listening to its electrical symphony with astonishing clarity.
