AHI	Apnea–Hypopnea Index
ALFF	Amplitude of Low-Frequency Fluctuations
AMS	Acute Mountain Sickness
ASL	Arterial Spin Labeling
ATP	Adenosine Triphosphate
BH	Breath Holding
BOLD	Blood-Oxygen-Level Dependent
CEN	Central Executive Network
CMRO2	Cerebral Metabolic Rate of Oxygen
CMS	Chronic Mountain Sickness
DAN	Dorsal Attention Network
DCM	Dynamic Causal Modeling
dFC	Dynamic Functional Connectivity
DMN	Default Mode Network
EPI	Echo-Planar Imaging
fALFF	Fractional Amplitude of Low-Frequency Fluctuation
FC	Functional Connectivity
FCD	Functional Connectivity Density
FPN	Fronto-Parietal Network
HA	High Altitude
HIE	Hypoxic–Ischemic Encephalopathy
ICA	Independent Component Analysis
MCI	Mild Cognitive Impairment
ODI	Oxygen Desaturation Index
OSA	Obstructive Sleep Apnea
PAIR	Presaturation with Inversion Recovery
ReHo	Regional Homogeneity
ROS	Reactive Oxygen Species
rs-fMRI	Resting-State Dunctional Magnetic Resonance Imaging
RSN	Resting-State Network
SMN	Sensory–Motor Network
SN	Salience Network
VAN	Ventral Attention Network
VN	Visual Network