All participants underwent MRI in a General Electric Discovery MR 750 3.0 Tesla MRI scanner with an orthonormal head coil with routine scanning to exclude severe brain tissue injury and motor artifacts of the brain. The echo-planar imaging sequence was used to acquire the resting-state blood-oxygen-level-dependent signal; the scanning parameters were as follows: echo time = 40 ms, repetition time = 2,000 ms, matrix = 64 × 64, flip angle = 90°, field of view = 24 cm × 24 cm, scanning time = 400 s, and image thickness space = 2 mm. A total of 200 volumes (33 slices/volume) were collected during rs-fMRI collection, resulting in 6,400 images for each subject.
During the whole resting-state scanning process, participants were instructed to close their eyes, keep their heads motionless, remain awake and relaxed, and minimize thinking activities. Meanwhile, cushions and ear plugs were used to prevent head movement and provide noise isolation.
During the whole resting-state scanning process, participants were instructed to close their eyes, keep their heads motionless, remain awake and relaxed, and minimize thinking activities. Meanwhile, cushions and ear plugs were used to prevent head movement and provide noise isolation.