The study participants were shown a series of short videos featuring either sexually explicit content or sports whilst their brain activity was monitored using functional magnetic resonance imaging (fMRI), which uses a blood oxygen level dependent
(BOLD) signal to measure brain activity.
This characteristic is known as the blood oxygen level dependent
During a simple finger-tapping task, changes were assessed in cerebral blood flow, cerebral metabolic rate of oxygen consumption, and blood oxygen level dependent
mapping within a subcortical region, the lenticular nuclei of the basal ganglia.
It uses a imaging technique known as blood oxygen level dependent
Called Blood Oxygen Level Dependent
(BOLD) imaging, the new method detects increases in blood flow to active areas of the brain.