PSY 2105 Chapter Notes - Chapter 5: Neuroglia, Cell Migration, Neuroblast
15 Mar 2017
School
Department
Course
Professor
Document Summary
Neuroimaging techniques (technology that lets science generate structural and functional maps of the brain. ) 3 categories: electrical activity: electrodes on scalp that detect changes in brain voltage due to neural activity. 2 types: spontaneous electroencephalography (eeg=measures rhythms of electrical activity of neurons as person is exposed to a variety of stimulus. ) ever-related potentials (measure activity of specific areas after a certain stimulus or action. Activity in parts of the brain that remain across lifespan. ) Meg (magnetoencephalography=magnetic fields generated by neural activity are measured by sensors. : assess anatomical structure: mri (images the brain by creating magnetic field and interacts with molecules of the body so they emit energy to create an image. Can be used to differentiate between tissue types. ) Dti (diffusion tension imaging where diffusion of water molecules through tracts in the brain are measured. Bold signal in more active areas=changes in blood oxygen level dependent (bold) where there is an increase of bloowdflow. )
