Warm-Up 3/28

1. Stimulus is a cause of physical response:something that causes a physical response in an organism, e.g. a drug or an electrical impulse
2. Medulla oblongata is a portion of the hindbrain that controls autonomic functionssuch as breathing, digestion and heart rate. Hypothalamus is a part of the brain does the job of connecting the endocrine system with the nervous system through the pituitary gland.
3.  Mechanoreceptors are receptor cells that detect sound 
4. 
5. Processing visual stimuli: Edge enhancement is a ‘pre- central nervous system ‘processing of information on the retina itself. This processing is not carried out by part of the brain but by the organisation of the retinal cells.

Contralateral processing is the way in which the brain collects and integrates information from the eyes to create the perception of seeing. Both these processes require a more detailed knowledge of the retina and brain. It should also be noted that this biology is still the subject of much research and the ideas presented are hypothetical.