BIOLOGICAL BASES OF BEHAVIOR
STUDYING THE BRAIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oxygen, which is provided by the blood
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Sugar, which is provided by the pancreas
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Fat, which is provided by fat cells
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None of the above
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Detailed explanation-1: -FMRI is a method of measuring the flow of oxygenated blood in the brain (Ogawa et al., 1990A, 1990B; Bandettini, 1992). FMRI is based on the BOLD effect where BOLD stands for blood oxygen-level dependent.
Detailed explanation-2: -FMRI revealed that the generation of negativity (increased cortical excitation) was accompanied by widespread activation in central, pre-frontal, and parietal brain regions as well as the basal ganglia.
Detailed explanation-3: -An fMRI imaging scan takes advantage of activated neurons requiring more oxygen from red blood cells. This increase in activity leads to a change in blood flow. fMRI detects these changes. By indirectly measuring the alterations in blood flow and electrical activity, fMRI assesses brain activity.
Detailed explanation-4: -Blood-oxygenation-level-dependent functional magnetic resonance imaging is a noninvasive technique that has become increasingly popular in the neurosciences. It measures the proportion of oxygenated haemoglobin in specific areas of the brain, mirroring blood flow and therefore function.