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Human Brain and Behaviour- Lecture 1- 11th September 2012.docx

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Ted Petit

PSYB65 Human Brain and Behaviour Lecture 1 11 September 2012 - Deals with Patients with brain damage and brain diseases - Your brain is grey cells, it creates a phenomenon because it is just little neurons that creates thoughts, and emotions and consciousness - The brain is divided into the central nervous system (CNS) and the Peripheral nervous system (PNS) - The brain and the spinal cord make up the central nervous system - The Peripheral nervous system is everything else. Sends information out to control the muscles of your feet, arms etc. - The spinal cord is continous with the brain, if you take it apart you cant tell where one ends and one begins. It is all just one big nervous system - Once you are in the brain, there are many ways of subdividing the brain - The simplest way is dividing it into the forebrain, the midbrain and the hindbrain. - The hindbrain – composed of a lot of things. The two major things are the cerebellum (involved with sensory motor integration; receives sensory information and determines what actions needs to be done, when you have damage to this people have problems standing up, they look like they are drunk) The other thing that is major is the Medulla ( it looks like a cauliflower stuck out from a stick, it is responsible for basic life processes that is keeping you alive at the most basic level, talking about heart beat and respirtation) - The next major component is the Midbrain- one important thing that is located there is the reticular formation, it is very important for controlling sleep wakefulness cycles what is referred to circadian rhythms. What do you call someone that doesn’t wake up, someone that is in a coma, they have a damage circadian rhythm. - Then as you move forward the next structure is the forebrain- starting from the back of it the one in the centre is the thalamus, beneath it is the hypothalamus. Thalamus is a relay centre, it stops there, and then it is relayed on to a new place. The hypothalamus controls life processes in a more complex way, it keeps the species alive over a more long period of time, it is responsible for eating behaviour, drinking, it is also involved
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