1. The midbrain is broken up into the tectum and the tegmentum. 2. Electrical stimulation experiments demonstrated that the tectum initiates orienting and snapping behaviors. 3. The superior colliculus / optic tectum forms a major component of the midbrain. 4. The tectum is responsible for auditory and visual reflexes. 5. Retinal axons enter the anterior tectum and proceed posteriorly. 6. When the tectum was removed, orienting behavior disappeared. 7. In optic tectum has a layer the marginal layer that is cerebellum-like. 8. The tectum is the chin and the cerebral peduncles are the face and ears. 9. Ipc gives rise to tightly focused cholinergic projections both to Imc and the tectum . 10. They presented owls with sound stimuli while recordings were made from the optic tectum .
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