The Theory Behind the Polygraph Test Is That People Who

question 95

Multiple Choice

The theory behind the polygraph test is that people who are lying

• A) have increased activity of the sympathetic nervous system.
• B) shift the pattern of blood flow in the brain.
• C) have increased activity of the parasympathetic nervous system.
• D) change their eye movements.

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Definitions:

Positron Emission Tomography (PET)

A nuclear medicine functional imaging technique that produces a three-dimensional image or picture of functional processes in the body.

Functional Magnetic Resonance Imaging (fMRI)

A neuroimaging technique that measures and maps brain activity by detecting changes associated with blood flow, used in research and clinical applications.

Frontal Cortex

The front part of the cortex of the brain. Divided left and right into the two frontal lobes, this part of the brain is associated with cognitive functioning such as planning, foresight, and understanding.