TY - RPRT TI - Double-ring network model of the head-direction system. AU - Xiaohui Xie AU - Richard H R Hahnloser AU - H Sebastian Seung PY - 2002 DO - 10.1103/physreve.66.041902 UR - https://pubmed.ncbi.nlm.nih.gov/12443230/ ID - 12443230 ER -