Subject averages (mean ± stddev) of temporal SNR and apparent g-factor (gapp) for different multiband factors as determined in GM and WM VOIs.

All measures were derived from realigned and detrended time series data. Temporal SNR(t) (see Eq (1)) was calculated from the full time series (SNRfull; Tacq = 7 min) as well as from truncated time courses of 210 volumes (SNR210). The apparent g-factor gapp (see Eq (3)) was determined from the full time series. The mean VOI size (number of voxels, mean ± stddev) in GM and WM was 20346±1513 and 14156±1329, respectively.Subject averages (mean ± stddev) of temporal SNR and apparent g-factor (gapp) for different multiband factors as determined in GM and WM VOIs.