techniques - biology

Question 1

uses x-rays from many different angles and a computer to build up an image of the brain or body

Answer 1

Computerized Tomography (CT) scan

Question 2

implantation of a electrode to deliver electrical stimulation to a region effectively inactivating the region

• Parkinson’s disease: globus plaidus and other regions
• multiple sclerosis: thalmus

Answer 2

Deep Brain Stimulation

Question 3

delivery of low current to brain region of interest via electrodes on the scalp. Thought to the likelihood that neurons would fire (neuronal excitability)

Answer 3

Transcranial Direct Current Stimulation (tDCS)

Question 4

radioactive sugar or glucose injected which is taken up by active neurons. emitted positions annihilate and convert to gamma rays which are detected.

Answer 4

Positron Emission Tomography

Question 5

Variation of MRI

measures movement of water molecules along axons. Allows teaching of brain wiring

Answer 5

Diffusion Tensor Imaging

Question 6

Uses MRI techniques to image blood flow which reflects neuronal activity. Multiple images taken over time to generate a dynamic view, albeit at which lower resolution than a standard MRI scan

Answer 6

Functional Magnetic Resonance Imaging (fMRI)

Question 7

imaging technique that uses a combination of radio waves and magnetic fields to scan the brain or a body part. Generates a static image.

Answer 7

Magnetic Resonance Imaging (MRI)