PSY 250 Lecture Notes - Lecture 14: Imaging Technology, Ct Scan, Attentional Blink

• School: University of Miami
• Department: Psychology
• Course: PSY 250
• Professor: hurtado

Document Summary

Electroencephalogram (eeg) the subject is given a stimulus and we can see when the neurons are firing in relation to the stimulus; good when information but not good where information. Computed tomography (ct) scan- computer generates cross-section views of the brain using x-ray radiation. Positron emission topography (pet) scan- radioactive dose of glucose is injected into the bloodstream to produce 3-dimensional, color images of the functional processes within the human body; good where information. Magnetic resonance imaging (mri)- uses radio waves and magnetic field to provide very clear pictures of the brain. Functional mri (fmri)- measures blood flow while subject is stimulated, examines structure and function of brain. Attentional blink- the phenomenon that the second of two targets cannot be detected or identified when it appears close in time to the first. Results: typical attentional blink is second. Asked an observer pay attention to one of two different messages, each delivered to one ear over stereo earphones.