The Living Brain Flashcards
What does structural imaging study?
Anatomy of the SNC
What does functional imaging study?
Dynamic function of the SNC
What did Angelo Mosso discover in the 19th century?
He linked brain pulsations to brain activity
Who invented the X-rays?
Röntgen
What did Walter Dandy invent in 1919?
Pneumoencephalography
Who invented the EEG in 1924?
Psychiatrist Hans Berger
What did Berger measure with EEG?
Sleep characterization and epileptic seizures
Who invented the first CT scanner in 1967?
Hounsfield
What does a CT scanner do?
Is an X-ray reconstruction
Name characteristics of PET
It needs a radioactive tracer produced in a Cyclotron on site
Invasive
Expensive
Detect GAMMA rays from tracer
Characteristics and functions of fMRI
Versatile
Visualize anatomy
Mapping tracts
DTI
Dynamic changes during tasks or rest state
The difference in image quality in fMRI is due to:
Variation in spatial and temporal resolution
How is MRI for visualizing structure?
High spatial resolution (great detail)
Low temporal resolution (minutes to acquire)
How is fMRI for visualizing function?
Low spatial resolution (poor details)
High temporal resolution (seconds to acquire)
Characteristics of EEG
Cheap $
LOWEST spatial resolution
HIGHEST temporal resolution
LOWEST tolerance needed
