Flashcards in Introduction Deck (15):
This is used for proper placement of an electrode or cannula.
This is an electric recording technique in which the recording is taken from a single cell.
This is a gross electrical recording from a large brain area.
Electroencephalogram (EEG) *Fig 5.9 p. 107*
This is when a stereotactic instrument is employed and part of the brain is removed, damaged or destroyed, usually by aspiration, burning or freezing.
Lesion *Fig 5.15 p. 111*
True or False: the animal used in histological examinations is sacrificed concluding the experiment.
What happens to the animal's brain following the histological examination?
It is REMOVED, HARDENED in formalin, embedded in paraffin then SLICED and STAINED
This is an X-RAY that reveals the BLOOD VESSELS in the brain.
Angiogram *Fig 5.1 p. 102*
What preparatory steps are taken prior to an angiogram?
Dye is injected into the blood vessels that enter the brain.
This is a non-invasive IMAGING TECHNIQUE where a NARROW X-RAY beam is emitted by a source on one side of the head while detectors MEASURES the number of PHOTONS that emerge.
Computerized Axial Tomography (CAT Scan)
*Fig 5.2 p. 103*
True or False: in a CAT scan, less x-ray light passes through soft tissue.
FALSE, soft tissue allows MORE x-ray light through
This type is non-invasive imaging us similar to a CT scan except signals arise from decay of RADIOISOTOPES injected into patient's circulation.
Positron Emission Tomography
*Fig 5.6 p. 105*
True or False: the radioisotope used in PET scans can be linked to glucose.
TRUE, the radioisotope used in PET scans can be LINKED TO GLUCOSE
In this type of NON-INVASIVE IMAGING, the nuclei of atoms in the brain respond to MAGNETIC FEILDS differently depending upon their local atomic environment.
Magnetic Resonance Imaging
*Fig 5.3 p. 103*
*Fig 5.4 p. 104*
True or False: in an MRI, dense tissue shows less activity.
FALSE, in an MRI, DENSE tissue shows MORE activity