Complex sentence: Dr. Ali Rezai is an American neurosurgeon specialized in neuromodulation and neural engineering who, in 2014, used a chip implant to decode and transmit signals from the motor cortex of a patient's brain to bypass spinal injury and restore limb movement.
Split into simpler sentences: Dr. Ali Rezai is an American neurosurgeon who specializes in neuromodulation and neural engineering. In 2014 he used a chip implant to decode and transmit signals from the motor cortex of a patient's brain to bypass spinal injury and restore limb movement.