1. Researchers can now see actual thought processes by measuring _____________.
neuron exchanges in the brain
spikes in the brain’s electrical currents
increases in blood flow and oxygen to different parts of the brain
past and present research on the brain
2. __________ is an older technique for monitoring brain activity.
3. PET’s and PECT’s commonly use _______________ materials such as oxygen, fluorine, carbon, and nitrogen. (1 point)
radioactively labeled
non-invasive
naturally occurring
deadly
4. In PET scans, the breakdown of radioactive materials in the body and the release of gamma rays produce a ____________ view of the brain.
5. Local police detectives are trying to determine their victim’s cause of death. They suspect that the victim might have died as a result of trauma to the head and brain. Which of the following brain imaging techniques would be most useful in this case?
MRI
fMRI
PET
EEG
For questions 6-10, fill in the blank with the letter of the description that best matches the type of brain scan.
Descriptions
A. Uses electrodes placed on the scalp to detect and measure patterns of electrical activity emanating from the brain
B. Uses magnetic fields and radio waves to produce high-quality two- or three-dimensional images of brain structures without injecting radioactive tracers
C. Detects changes in blood flow to particular areas of the brain to provide both an anatomical and a functional view of the brain
D. A scanner detects radioactive material that is injected or inhaled to produce an image of the brain
E. Uses a series of X-ray beams that are passed through the head
6. MRI
7. CT
8. fMRI
9. PET
10. EEG
best answer will be awarded