PSYCO104 Lecture Notes - Lecture 4: Diffusion Mri, Infrared Spectroscopy, Pulse Oximetry

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Eric Legge

Document Summary

Psych 104 lecture 4 biological psychology and genetic influences. Functional magnetic resonance imaging (fmri): repeated cycles of measuring and detecting changes in the blood and oxygenation of the brain, when the brain is used it needs more oxygen. Make people do different cognitive tasks (ex. get people to sing, solve problems, do math) during scanner. Infrared lights pointed towards the skull: shine lights into the brain. Receptors on them (refracted infrared lights come back: more oxygenated blood (more refraction than deoxygenated blood) Can see the quick changes in impulses and activity. Intracranial eeg: takes recordings of the electrical impulses directly inside the brain, electrodes implanted into different brain structures, not done for experimental purposes, recording the medical issue an individual is having. Epileptic seizures (early monitoring system to know when they will have a seizure: can record the data and get more precise data (the signal won"t be disturbed)