PSY 105 Lecture Notes - Ct Scan, Oligodendrocyte, Resting Potential
20 Feb 2014
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Document Summary
Examining autopsy tissue, testing the behaviour of patients with brain damage, use electroencephalograms (eeg) records brain activity from the surface of the scalp, animal studies & neuroimaging techniques that show visual images in awake humans. Structural imaging techniques use advanced technology to create images of the living, healthy brain. Cat or ct scan (computerized axial tomography) and mri (magnetic resonance imaging) more expensive but higher resolution. Functional brain imaging techniques allow us to watch the brain in action. And fmri (functional magnetic resonance imaging) shows where the activity in the brain is concentrated; the red areas indicate heavy activity; quicker to capture changes in brain activity than pet; shows 2 phases, gesture preparation and gesture production. Neurons are cells in the nervous system that communicate w/ one another to perform info- processing tasks; there are 100 billion neurons in the brain. Glia are cells that help support neurons; they outnumber neurons 10:1; there are diff types:
