Isao Hayashi Hisashi Toyoshima Takahiro Yamanoi Recognition of perception and the localization for aperture problem in visual pathway of brain. 1872-1877 2007 SMC http://dx.doi.org/10.1109/ICSMC.2007.4413697 conf/smc/2007 db/conf/smc/smc2007.html#HayashiTY07