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What causes behavioural differences in males, females: University of Maryland

What causes behavioural differences in males, females: University of Maryland

Sentinel Digital DeskBy : Sentinel Digital Desk

  |  3 March 2019 7:35 AM GMT

New York: US researchers have discovered a mechanism for how androgens — male sex steroids — sculpt brain development, which could ultimately help understand development of social behavioural differences between males and females. The team, from the University of Maryland in the US, discovered a mechanism for how androgens sculpt the brains of male rats to produce behavioural differences, such as more aggression and rougher play behaviour.

“We already knew that the brains of males and females are different and that testosterone produced during the second trimester in humans and late gestation in rodents contributes to the differences but we did not know how testosterone has these effects,” said Margaret M. McCarthy from the varsity.

The study revealed that the number of newborn cells in the part of the brain called the amygdala, which controls emotions and social behaviours acts as a key contributor to the differences in behaviour between males and females. Males have fewer of these newborn cells, because they are actively eliminated by immune cells by endocannabinoids which plays a role in reproductive functions and response to stress. (IANS)

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