The danger of systematic bias in group-level FMRI-lag-based causality estimation.
Stephen M. SmithPeter A. BandettiniKarla L. MillerT. E. J. BehrensKarl J. FristonOlivier DavidThomas T. LiuMark William WoolrichThomas E. NicholsPublished in: NeuroImage (2012)