Doctors at a hospital in Guangzhou, capital of Guangdong province, have successfully performed a precise neural modulation surgery on a 12-year-old girl with drug-resistant epilepsy, by using an implantable brain-computer interface device to monitor her brain signals in real time.

The surgery, performed by doctors at Zhujiang Hospital of Southern Medical University on Monday, marked the first of its kind in South China, according to the hospital.

"By implanting a closed-loop brain acquisition and stimulation system, or ANS, it aims to precisely regulate abnormal neural activity," said Guo Yanwu, a professor from the hospital's department of functional neurosurgery.