Introduction

Question 0

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

Answer 0

Microelectrode Recording

Question 1

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

Answer 1

Stereotaxic Instrument

Question 2

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

Answer 2

Electroencephalogram (EEG) Fig 5.9 p. 107

Question 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.

Answer 3

Lesion Fig 5.15 p. 111

Question 4

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

Answer 4

TRUE

Question 5

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

Answer 5

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

Question 6

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

Answer 6

Angiogram Fig 5.1 p. 102

Question 7

What preparatory steps are taken prior to an angiogram?

Answer 7

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

Question 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.

Answer 8

Computerized Axial Tomography (CAT Scan)

Fig 5.2 p. 103

Question 9

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

Answer 9

FALSE, soft tissue allows MORE x-ray light through

Question 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.

Answer 10

Positron Emission Tomography

Fig 5.6 p. 105

Question 11

True or False: the radioisotope used in PET scans can be linked to glucose.

Answer 11

TRUE, the radioisotope used in PET scans can be LINKED TO GLUCOSE

Question 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.

Answer 12

Magnetic Resonance Imaging

• Fig 5.3 p. 103*
• Fig 5.4 p. 104*

Question 13

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

Answer 13

FALSE, in an MRI, DENSE tissue shows MORE activity

Question 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.

Answer 14

Functional Magnetic Resonance Imaging

Fig 5.7 p.105