TY - RPRT TI - Material-dependent activation in prefrontal cortex: working memory for letters and texture patterns--initial observations. AU - Marek Binder AU - Andrzej S Urbanik PY - 2005 DO - 10.1148/radiol.2381041622 UR - https://pubmed.ncbi.nlm.nih.gov/16304084/ ID - 16304084 ER -