Multiple choice SQUID/Superconducting Quantum Interference Device is helpful in the study of electrical potential of different parts of brain electrical potential of different parts of heart weak magnetic fields in different parts of brain weak magnetic fields in different parts of heart Reveal answer Fill a bubble to check yourself C Correct answer Explanation SQUID sensors are extremely sensitive magnetometers used to measure the incredibly weak magnetic fields generated by neuronal activity in the brain, a technique known as magnetoencephalography.