BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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provide a way to measure the functioning and activity of the brain.
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produce black and white scans of the brain’s structures.
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create selective injuries that allow researchers to study brain function.
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provide detailed computerized interpretations of brain dysfunctions.
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Detailed explanation-1: -Functional magnetic resonance imaging (fMRI) measures the small changes in blood flow that occur with brain activity. It may be used to examine which parts of the brain are handling critical functions, evaluate the effects of stroke or other disease, or to guide brain treatment.
Detailed explanation-2: -fMRI and PET measure haemodynamic changes induced by regional changes in neuronal activity. These techniques have a high spatial resolution (a few millimeters), but a poor temporal resolution (a few seconds to several minutes).
Detailed explanation-3: -A PET scan is similar to an fMRI in that both measure blood flow in the brain, which is an indirect measure of brain activity. However, there are advantages and disadvantages to both functional brain imaging methods.
Detailed explanation-4: -fMRI detects brain activity by measuring the changes in both the amount of oxygen in the blood and the amount of blood flow [4, 5]. This measurement is known as blood-oxygen-level-dependent activity (BOLD activity).