MRI Scan Preparation. We did not use any mock scan or additional preparation beyond standard written and verbal description when consent was obtained as well as verbal instructions prior to and during scan session.

MRI Scanning.We would give children chloral hydrate to take for sedation for the scan if they did not cooperate with the examination. Chloral hydrate is conventionally used as a sedative and hypnotic pharmaceutical drug, which has a long history of safety and availability in infants and is used frequently for pediatric electroencephalography sedation. Sedation was performed by a trained and certified nurse following the guidelines and protocols established by the Radiology Sedation Committee of the hospital. A caregiver was present for each participant during the scan.

High-resolution MR data of the whole brain were acquired using a 3D T1W1 sequence with the following parameters: repetition time (TR) = 2200ms,echo time (TE) = 3.06 ms, thickness=1mm,

field of view (FOV) = 192×192 mm^2.

BOLD: repetition time (TR) =:2000 ms/, echo time (TE) = 25 ms ms,  field of view (FOV) = 192×192 mm², flip angle (FA) = 90°