PSYB64H3 Chapter Notes - Chapter 1: Positron Emission Tomography, Horseradish Peroxidase, Ct Scan
27 Oct 2011
School
Department
Course
Professor
Document Summary
Imaging: computerized tomography (ct), provides excellent structural information, however, a ct scan cannot distinguish between a living brain and a dead one. The darkness or coloration of each voxel represents the level of pulse activity in an area. Functional mri (fmri): is used to assess brain activity by tracking blood flow in the brain. Evoked potentials: allows researchers to examine the brain"s electrical activity in response to a stimulus, such as a tone. Repeated transcranial magnetic stimulation (r tms) consists of magnetic pulses delivered through a single coil of wire encased in plastic that is placed on the scalp. In some cases, r tms will inhibit a certain function, such as hearing voices among some patients with schizophrenia. In other cases, r tms appears to disinhibit behavior, or allow a normally inhibited behavior to be expressed: delgado would face a bull armed with only a transmitter.
