More recently, scientists have started to focus on measuring changes in brain activity related to sexual arousal, by using brain-scanning techniques. A study on how heterosexual and homosexual men's brains react to seeing pictures of naked men and women has found that both hetero- and homosexual men react positively to seeing their preferred sex, using the same brain regions. The only significant group difference between these orientations was found in the amygdala, a brain region known to be involved in regulating fear. COUNT 5
QSN1 What have scientists started spending the most time on? ANS1 measuring changes in brain activity related to sexual arousal QSN2 How do scientiest measure brain activity? ANS2 by using brain-scanning techniques QSN3 How did both gay and straight men react to pictures of both naked men and women? ANS3 positively QSN4 What was the only difference in the study between gay and straight men? ANS4 The only significant group difference between these orientations was found in the amygdala, QSN5 What does the amygdala region of the brain do? ANS5 known to be involved in regulating fear.