TY - RPRT TI - Increasing required neural response to expose abnormal brain function in mild versus moderate or severe Alzheimer's disease: PET study using parametric visual stimulation. AU - M J Mentis AU - G E Alexander AU - J Krasuski AU - P Pietrini AU - M L Furey AU - M B Schapiro AU - S I Rapoport PY - 1998 DO - 10.1176/ajp.155.6.785 UR - https://pubmed.ncbi.nlm.nih.gov/9619151/ ID - 9619151 ER -