PSYC340 Midterm: Neuroimaging Review

• School: University of Delaware
• Department: Psychology
• Course: PSYC340
• Professor: Medina Jared

Document Summary

Used diagnostically: measure damage from stroke, multiple sclerosis, movement disorders, neuron diseases, mental illness. Used: to measure brain activity and blood flow within the brain. Mri-anatomical structure; diagnose soft tissues of the human body & brain (shows abnormalities) fmri-metabolic function; processes in human brain. Used: to show structure of brain, not what the brain is doing. Can show lesions, age, & degradation in underlying neurons; pulses cause depolarization of neurons. Neurons activate visual & motor areas, or whatever is being stimulated axes realign with the field & release energy: energy is measured by scanner & interpreted as data, different atoms produce different frequencies. Cons: causes epileptics to have seizures, only excites surface of cortex, moderate spatial resolution values are statistically compared to see if signal is stronger for condition x or condition y. Task oriented: if part of your brain is performing a cognitive function, your brain knows to send more oxygen there for the structure to use.