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Psychology in Modules: Module 5.docx

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PSYC 1010
Rebecca Jubis

Module 5 Page 1 Module 5 Tools of Discovery and Older Brain Structures Lesion - tissue destruction. A brain lesion is a naturally or experimentally caused destruction of the brain tissue.  Today scientists can electronically, chemically, or magnetically stimulate various parts of the brain to note effect Electroencephalogram (EEG) - an amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp. Presenting a stimulus and having a computer filter out brain activity unrelated to the stimulus. PET (Positron Emission Tomography) - a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task. MRI (Magnetic Resonance Imaging) - a technique that uses magnetic fields and radio waves to produce computer generated images of soft tissue. MRI scans show brain anatomy. MRI's have reveled larger than normal neural area in the left hemisphere of musicians. Have also revealed enlarged ventricles (fluid filled brain areas). fMRI (functional MRI) - a technique for revealing blood flow and therefore brain activity by comparing successful MRI scans. The Brainstem Brainstem - the oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skill; the brainstem is responsible for automatic survival functions. Medulla - the base of the brainstem, controls heartbeat and breathing. Just above the medulla, Pons helps coordinate movements. Thalamus - the brains sensory switchboard, locat
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