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From the article:

In a double-blind, placebo-controlled study, 54 young healthy women were given 0.5 mg of testosterone (or a placebo) four hours before a brain scan. This dosage is much lower than, for example, that used for a sex change treatment, or as a supplement for sportspeople, but it is sufficient to have a measurable effect on brain activity.


It seems that testosterone facilitates social approach by specifically activating the amygdalae only if social approach is desired. This is interesting for two reasons. It explains previous research that showed that testosterone makes approaching a social threat easier. Even more important, it shows that the amygdalae are not necessarily linked to dealing with emotions, but rather to motivation. Many studies forget to look at motivation. We are the first to demonstrate that the impact of testosterone on amygdala response depends on the motivational context."

Also in cases of social anxiety?

“We’re now going to repeat this study in people with social anxieties. We have already discovered that these people have lower testosterone levels. We are going consider how we can apply these results with testosterone to improving the treatment for anxiety disorders.”

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