“…The diencephalic visual "nuclei" receive a projection from the ipsilateral and the contralateral retina, whereas the mesencephalic visual centers in the tectum and tegmentum receive direct projections only from the contralateral retina. An indirect ipsilateral projection, however, exists into the optic tectum by means of tecto-tectal and thalamo-tectal connections (WLASSAK, 1893;RAMON, 1894;GAUPP, 1904;HERRICK, 1925;KAPPERS et aI., 1936;KRETH, 1940;KNAPP et aI., 1965 NOMOKONOVA, 1968;RUBINSON, 1968RUBINSON, , 1969LAZAR, 1969a;EBBESSON, 1970;SCALIA and GREGORY, 1970;GOLDBERG and KOTANI, 1967;ALEKSANDROVA, 1972;SCALIA and FITE, 1974).…”