Many of the experiments discussed on class regarding blind-sight, and the responsiveness of the body to stimuli which affect the body through a visual blind spot could well be explained by the autonomic functions of the brain stem. (Corey, et al. 1995) This portion of the brain is responsible for many autonomic function of the body, such as respiration, heart beating, etc. Advanced training, what is often referred to as subconscious responses to external stimuli, could well be the part of neural learning which happens in the brain stem. The received stimulus does not have to transmit as far as the brain cerebral hemisphere for the body to 'know' how to respond. Thus, learned behaviors become more of a subconscious, autonomic function because of brain stem responses.
The visual cortex composes approximately 1/3 of the brain surface area, and if primarily responsible for receiving and processing visual input. The visual cortex is highly pattern recognitive, therefore it processed patterns in order to break down the input signals and make connections for the mind to understand.
Visual understanding is an important part of thought and understanding. The proof of which is the importance and presence of dreams. Regardless of the dream theory one ascribes to, each theorist and their theories lead in the same direction.