General Information & Situations
Imaging
Monitoring Electrical Activity
Monitoring Chemical Signals
100
What are the 3 different classes of methods used to measure and look at brain activity?
Monitoring Electrical Activity, Imaging, and Monitoring Chemical Signals
100
What are some different examples of Imaging Techniques used on the brain?
MRI, fMRI, PET/SCAN, CT
100
What are techniques used to monitor electrical activity in the brain?
EEG, EMG, ECoG
100
What are some techniques used to monitor chemical signals?
Cyclic Voltammetry, In vivo microdialysis, spinal tap
200
A doctor is trying to accurately detect the presence of and the location of cancerous cells in their patient's body. What type of brain imaging would they use?
PET scan
200
Which imaging technique uses BOLD signals to create an image of the brain?
fMRI
200
What do EEG’s take advantage of?
the difference in charge between the cell body and the synaptic terminal.
200
What is the only way to directly measure neurotransmitters in humans?
Spinal Tap
300
A patient with severe brain injuries’ skull is removed in order to reduce brain swelling. The surgeons would like to get a clearer signal with no electrical interference from the skull so they place electrodes directly on it. What type of imaging is being used?
EEG
300
What technique for monitoring electrical activity in the brain has the shortest discrimination time CT scan or fMRI?
CT scan has a discrimination time of less than 1 milisecond, where as the fMRI has a discrimination time of 1 second, therefore CT scan is shorter.
300
label these as EEG tangential, MEG tangential and EEG radial
300
Which technique draws cerebrospinal fluid and looks at the general circulating neuron levels, and what does this tell us about its temporal resolution?
Spinal Tap, bad temporal resolution
400
Q: Match the stages with the time
Hemodynamic delay, amount of time to return to baseline, time to peak to peak of the response
Hemodynamic delay ~2seconds
Time to peak of the response ~13seconds
Amount of time to return to baseline ~20seconds
400
If you wanted to use a brain imaging technique with the best spatial resolution, which would you choose?
fMRI
400
What is the difference between an EEG and an EMG?
An EEG records electrical waves of the brain whereas an EMG evaluates nerve and muscle function in the arms of legs
400
During in-vivo microdialysis, what is used to measure the amount of neurotransmitters released?
a semipermeable membrane