Hiroyuki Uchiyama Koichi Goto Hiroyuki Matsunobu ON-OFF retinal ganglion cells temporally encode OFF/ON sequence. 611-615 2001 14 Neural Networks 6-7 http://dx.doi.org/10.1016/S0893-6080(01)00030-2 db/journals/nn/nn14.html#UchiyamaGM01