9.29 Notes Flashcards
Problem with PET scan
It assumes that more glucose is in that part of the brain because it needs more sugar to function, but this is flawed because some parts of the brain don’t use a lot of sugar because it’s high-efficiency, but that doesn’t mean it’s not being used
Regional cerebral blood flow
rCBF; Inhaling a radioactive substance; functional imaging technique; the parts of the brain using the most blood are the most active
Functional magnetic resonance imaging
fMRI; Functional imaging; modified MRI so it can be used to determine which part of the brain is more or less active
Transcranial magnetic stimulation
TMS; uses magnetic energy to deactivate or activate various brain areas
Transcranial direct current stimulation
TDCS; uses electricity to deactivate or activate a brain area for up to an hour
Functional near infrared spectrograph
fNIRS; Near infrared light is shined on your skull; different areas of the brain absorb different amounts of light; how much it is absorbed is based on the amount of oxygen in the frontal lobe
Wilder Penfield
The one who mapped body parts on the sensory cortex when he was doing neurosurgery on epileptic patients
Headaches
Pain in the blood vessels or muscles, not in the brain
WADA test
Performed prior to brain surgery to allow the surgeon to know which side of the brain contains the language; conducted by injecting sodium Amytal into the coronary artery, which is a fast-acting barbiturate, also known as the truth serum; whichever side you inject makes that side go to sleep; but can cause strokes
Rostral
Anterior
Caudal
Posterior
Contralateral
Opposite side
Ipsilateral
On the same side as
Nerve
A bundle of axons in the PNS; take info from outside and send them to spinal cord and from your spinal cord to your muscles
Tracts or productions
Bundles of axons in the CNS
