eli5: How do MRIs make your muscles twitch

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Went for an MRI recently, and my mucl8wwrs twitching every time the machine made a sound. The tech said it was nerve activation, but how could a magnetic field make my arm twitch?

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Anonymous 0 Comments

MRI machines make images by changing magnetic fields in a controlled manner. When these fields are changed rapidly, it can induce electric fields which in turn can lead to peripheral nerve stimulation or muscle twitching

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