TY - RPRT TI - Dissociating working memory from task difficulty in human prefrontal cortex. AU - D M Barch AU - T S Braver AU - L E Nystrom AU - S D Forman AU - D C Noll AU - J D Cohen PY - 1997 DO - 10.1016/s0028-3932(97)00072-9 UR - https://pubmed.ncbi.nlm.nih.gov/9347483/ ID - 9347483 ER -