functional neuroimaging

Question 1

neural tracts

Answer 1

-intracerebral (within hemisphere)
- intercerebral (between hemisphere)
projection fibers

Question 2

intracerebral neural tract

Answer 2

arcuate fasciculus
- transmits information from wernickes area to brocas area
longitudinal fasiculus
- integrate information and send to prefrontal cortex

Question 3

intercerebral

Answer 3

anterior/posterior commmisures and corpus callosum

Question 4

projetion fibers

Answer 4

thalamo-cortical radiations

- from nuclei to thalamus into corticies

Question 5

corpus callosum

Answer 5

telencephalon

connects fibers

Question 6

positron emission and singe photon emission computed tomogrophy

Answer 6

PET and SPEC scan

• spatial and temporal resolutions arent great
• combine with MRI to get better image
• injects radio nucleides
• gamma rays pick up by detectors
• measures glucose and oxygen metabolism during activity

Question 7

PET ICC

Answer 7

very very invasive
lots of clinical and research use
expensive and hard to keep up

Question 8

near infrared spectroscopy

Answer 8

laser beam and receptor

• cells have different light properties when oxy/deoxygenated and more active areas will use more oxygen
• can only map cortical areas

Question 9

fNIRS

Answer 9

non invasive and easy to set up
not expensive and accessible
heavily used for research but some clinical use

Question 10

functional magnetic resonance imagining

Answer 10

• MRI picks up differences in signal when doing activity and whne not doing activity
• oxy vs deoxy blood have differences in magnetic propertie s
  very high spatial resolution and decent temporal resolution

Question 11

blood oxygenation level dependancy (BOLD)

Answer 11

fNIRS and fMRI