TY - RPRT TI - T1 white/gray contrast as a predictor of chronological age, and an index of cognitive performance AU - Lewis, J. D. AU - Evans, A. C. AU - Tohka, J. PY - 2017 DO - 10.1101/171892 UR - https://www.biorxiv.org/content/10.1101/171892v1 ID - 10.1101/171892 ER -