TY - RPRT TI - Older observers have attenuated increment thresholds upon transient backgrounds. AU - J F Sturr AU - K L Church AU - S C Nuding AU - K Van Orden AU - H A Taub PY - 1986 DO - 10.1093/geronj/41.6.743 UR - https://pubmed.ncbi.nlm.nih.gov/3772050/ ID - 3772050 ER -