Introduction Flashcards Preview

Psychobiology > Introduction > Flashcards

Flashcards in Introduction Deck (15):
0

This is used for proper placement of an electrode or cannula.

Stereotaxic Instrument

1

This is an electric recording technique in which the recording is taken from a single cell.

Microelectrode Recording

2

This is a gross electrical recording from a large brain area.

Electroencephalogram (EEG) *Fig 5.9 p. 107*

3

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*

4

True or False: the animal used in histological examinations is sacrificed concluding the experiment.

TRUE

5

What happens to the animal's brain following the histological examination?

It is REMOVED, HARDENED in formalin, embedded in paraffin then SLICED and STAINED

6

This is an X-RAY that reveals the BLOOD VESSELS in the brain.

Angiogram *Fig 5.1 p. 102*

7

What preparatory steps are taken prior to an angiogram?

Dye is injected into the blood vessels that enter the brain.

8

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*

9

True or False: in a CAT scan, less x-ray light passes through soft tissue.

FALSE, soft tissue allows MORE x-ray light through

10

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*

11

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

12

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*

13

True or False: in an MRI, dense tissue shows less activity.

FALSE, in an MRI, DENSE tissue shows MORE activity

14

This type of non-invasive imaging uses high power OSCILLATING MAGNETIC FEILDS and powerful computation to measure CEREBRAL BLOOD FLOW and obtain a measure of NEURAL ACTIVITY.

Functional Magnetic Resonance Imaging

*Fig 5.7 p.105*