Human Neurobiology Tech
EED
Measures brain waves, action potentials are electrical impulses, detects electrical impulses
detects electrical activity in the brain
Smagg measures brain waves
action potentials are electrical
Small, flat electrodes on the scalp
types of brain scane: CT or CAT scan
x-rays move in a circle around the body
a computer takes the x-ray date and displays a 2D image
can be done with/ without contrast
Types of brain scan: MRI Scan
use magnetic fields and radio waves to form images
as oscillating magnetic field at a specific frequency
protons in water molecules emit a radio frequency signal that is picked up by a receiving coil
fMRI scan
uses blood-oxygen-level dependent contrast to map neural activity
brain activity= increase in blood flow
PET scan
produces a 3D image of the body
systems detects gamma rays emitted indirectly by a position-emitting radionuclide (tracer)
if the tracer is an analogue to glucose can measure activity
A type of nuclear imaging test
uses radioactive substance and a special camera to create 3D images