Dopamine - a hindbrain attached to the spinal cord and is...

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Dopamine - involved in movement, learning, reinforcement, etc. Has been associated with several clinical disorders such as schizophrenia. Dopamine Hypothesis (of schizophrenia) - one possible explanation for Schizophrenia is that there is an excess of dopamine at certain synapses in the brain. The increased dopamine levels produces abnormal, problematic behaviors. There are 3 ways this can occur: a. presynaptic neuron produces too much dopamine. b. dopamine is not removed from cleft, so keeps working. c. oversensitive postsynaptic neuron receptors (Most popular) Back to top The Two Nervous Systems A. Central Nervous System (CNS) - consists of the brain and spinal cord 1) Spinal Cord bundles of neurons that extend from the base of the skull to just below the waist, and act as an information link between the brain and the rest of the body. 2) Brain the brain has 3 major divisions - hindbrain, midbrain, & forebrain
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Unformatted text preview: a. hindbrain- attached to the spinal cord and is responsible for many automatic functions such as breathing and heartbeat, as well as some voluntary actions like walking and facial movements. b. midbrain- area of the brain that serves primarily as a relay station between the forebrain and hindbrain, but does control some bodily movements like the startle reflex. c. forebrain- the largest and most complex region of the brain. 1. cerebrum- center for complex thought. Involved in learning, remembering, thinking, and consciousness. Divided into two halves (hemispheres) that are connected by the corpus callosum - if split, hemispheres can't communicate, but that does not mean that a person can't survive. There is a large and interesting body of research on split brain functions. Please check your text book for this....
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