3.4- measuring and observing brain activity

Question 1

lesioning

Answer 1

a technique in which researchers intentionally damage an area in the brain (abnormal or damaged tissue)

Question 2

sham group

Answer 2

a set of animals that go through all of the surgical procedures, aside from the lesion itself, in order to control for the effects of stress, anesthesia, and the annoyance of stitches test

Question 3

structural neuroimaging

Answer 3

a type of brain scanning that produces images of the different structures of the brain

Question 4

computerized tomography (CT scan)

Answer 4

a technique in which scans x-rays are sent through the brain by a tube that rotates around the head (cheaper + safe)

Question 5

magnetic resonance imaging (MRI)

Answer 5

a imaging technique in which clear images of the brain are created based on how different neural regions absorb and release energy while in magnetic field

Question 6

diffusion tensor imaging (DTI)

Answer 6

allowing researchers or medical personnel to measure white-matter pathways in the brain

Question 7

functional neuroimiaging

Answer 7

a type of brain scanning that provides info about which areas of the brain are active when a person performs a particular behaviour

Question 8

electroencephgram (egg)

Answer 8

measures patterns of brain activity with the use of multiple electrodes attached to the scalp

Question 9

maynetoencepalgraphy (meg)

Answer 9

a neuroimaging technique that measured the tiny magnetic fields created by the electrical activity of nerve cells in the brain

Question 10

positron emission tomography (PET)

Answer 10

a type of scan in which a low level of a radioactive isotope is injected into the blood, and it’s movement to regions of the brain engaged in a particular task is measured

Question 11

functional magnetic resonance imaging (FMRI)

Answer 11

measures brain activity by detecting the influx of oxygen- rich blood into neural areas that were just active