after a unilateral lesion made through all six tectal layers , three distinct pathways could be observed : 1 ) an ascending projection both ipsi- and contralateral to the pretectal area , the dorsomedial region of the thalamus , and the lateral geniculate body , 2 ) a commisural projection to the contralateral tectum and intercollicular nucleus , and 3 ) a descending projection to the rhombencephalic reticular formation .
C0039729
thalamus
C0086526
lateral