Braskie MN, Medina LD, Rodriguez-Agudelo Y, Geschwind DH, Macias-Islas MA, Cummings JL, Bookheimer SY, Ringman JM. Increased fMRI signal with age in familial Alzheimer's disease mutation carriers. Neurobiol Aging. 2012 Feb;33(2):424.e11-21. PubMed Abstract