PSY 106 Chapter Notes - Chapter 5: Positron Emission Tomography, Magnetic Resonance Imaging, Cerebral Angiography
Document Summary
Ch 5 - methods of studying the nervous system. Positron emission tomography (pet): brain-imaging technique that has been widely used in biopsychological research because it provides images of brain activity rather than brain structure. Functional mri (fmri): produces images of the increase in oxygen flow in the blood to active areas of the brain: four advantages over pet, 1. Nothing has to be injected into the subject: 2. Provides both structural and functional information in the same image: 3. It can be used to produce 3d images of activity over the entire brain. 5. 2 recording human psychophysiological activity - methods of recording physiological activity from the surface of the human body. Eeg signal: sensory evoked potential - the change in the cortical eeg signal that is elicited by the momentary presentation of a sensory stimulus, the cortical eeg that follows the sensory stimulus has two components, 1. The response to the stimulus (signal: 2.
