Individual Variability and Test-Retest Reliability Revealed by Ten Repeated Resting-State Brain Scans Over One Month

Individual differences in mind and behavior are believed to reflect the functional
variability of the human brain. Due to the lack of a large-scale longitudinal dataset, the
full landscape of variability within and between individual functional connectomes is
largely unknown. We collected 300 resting-state functional magnetic resonance imaging
(rfMRI) datasets from 30 healthy participants who were scanned every three days for
one month. With these data, both intra- and inter-individual variability of six common
rfMRI metrics, as well as their test-retest reliability, can be estimated across multiple
spatial scales.