11. The LSO projects bilaterally to the central nucleus of the inferior colliculus ( ICC ). 12. Signals from the retina can also travel directly from the retina to the superior colliculus . 13. The superior colliculus and prefrontal cortex also have a major role in awareness of a visual stimulus. 14. The trochlear nerve comes out of the posterior surface of the midbrain, below the inferior colliculus . 15. This indicates that the inferior colliculus is metabolically more active than many other parts of the brain. 16. The LGN also receives some inputs from the optic tectum ( also known as the superior colliculus ). 17. The inferior colliculus receives input from both the ipsilateral and contralateral cochlear nucleus and respectively the corresponding ears. 18. La Berge provides a model that describes the complex interaction between the superior colliculus and other brain areas. 19. Broadly, a functional pattern can be discern which describes a number of layers within the superior colliculus . 20. It also projects to the superior colliculus , the suprachiasmatic nucleus, and the nucleus of the optic tract.