A device used to detect very weak magnetic field produced by brain is?
A device used to detect very weak magnetic field produced by brain is?
Explanation
SQUID stands for Superconducting Quantum Interference Device.
It is an extremely sensitive magnetometer used to detect very weak magnetic fields, such as those produced by brain activity (in magnetoencephalography, or MEG).
It can detect magnetic fields as small as 10⁻¹⁴ tesla, making it ideal for brain studies.