PSY 105 Lecture Notes - Acetylcholine, Peripheral Nervous System, Hindbrain
13 Feb 2013
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Document Summary
How do scientists study the nervous system: examining autopsy tissue, testing the behaviour of patients with damage to certain parts of the brain, recording brain activity, or brain waves from the surface of the scalp, animal studies. Techniques that allows the study of brain activity and structure by obtaining visual images in awake humans. Positron emission tomography (pet) small dose of radiation is injected and the radiation is used to scan the person"s brain. Functional magnetic resonance imaging (fmri) allows the detection changes in blood flow, a presumed indicator of changes in the activity of neurons. Computerized axial tomography (cat) shows the structure of the brain. Magnetic resonance imaging (mri) shows the structure of the brain, however shows a more clearer resolution that cat. Glia: the cell that, in addition to neurons, makes up the nervous system. Cell body (c) contains nucleus, which provides energy for the neuron. The part of neurons that collect input from other neurons.
