PS267 Study Guide - Quiz Guide: Ct Scan, Magnetoencephalography, Electroencephalography
Document Summary
Diffusor tension imaging (dti: 3-d image made of many 2-d images, x-ray absorption varies w/ tissue density, abundance of h atoms, detailed, high resolution image, use mri scanner to measure water content of axon tracts. Magnetoencephalography (meg) change in magnetic fields on scalp caused by underlying neural activity. Event-related design: non-invasive pre-surgical mapping, con: magnetic field so small = special room, electrodes directly on brain for 1 week. Description: linked behaviour to brain structure changes, treat patient throughout life & do autopsies, phrenology: skull bumps = mental traits, aggregate field theory: whole brain participates in behaviour. Individual neurons: stain individual neurons, syncytium: whole brain = continuous tissue mass, the neuron doctrine: nervous system made of individual cells, electrical transmission from dendrite axon, described nerve cell, discovered purkinje cells, velocity (speed) of nerve conduction. Ebbinghaus: mental process (memory) can be measured and analyzed.
