Like females, males too experience sharp changes in their hormones once they start parenting, say scientists who studied the brain structure of small monkeys.//
Yevgenia Kozorovitskiy and her colleagues from Princeton University studied the brain structure of common marmosets - small monkeys that live in trees - that had become fathers, reported the online edition of New Scientist.
The species is rare among mammals in that fathers share in caring for their offspring.
In both first-time and experienced fathers with dependent offspring, the team found structural changes in the prefrontal cortex, a region of the brain important for planning and memory, said one of the researchers.
In these areas, the neurons showed signs of enhancement with a greater number of connections. They also had more receptor sites for the hormone vasopressin. The number decreases as the infants age, dropping back to normal as the young become independent.
'Fatherhood produces changes in very high-cognitive-level areas,' said Kozorovitskiy last week at a meeting of the Forum of European Neurosciences in Vienna, Austria.
The nerve enhancements may reflect changes in the reward system, suggested Kozorovitskiy, encouraging the father to bond and care for the infant. It could be the neural basis of parenting, she added.
Page: 1 Related medicine news :1
. Males Lifespan Shortened By Elevated Levels Of Testosterone2
. Males Show More Risky Behaviour with Alcohol3
. Impact Of Stress On Belfast Males4
. Sexually Abused Males Found Struggling In heir relations with Healthcare Providers5
. Same Genes Act Differently in Males and Females6
. Fewer Neurons in Amygdala of Autistic Males7
. Researchers Find Fewer Neurons in the Amygdala of Males with Autism8
. Males Adapt To Battle With Competing Sperm9
. Sun Exposure Severe in Males10
. Cognitive Problems Occur More Rapidly in Female Alcoholics Than in Males11
. Female Ducks Develop Complicated Genitals to Outwit Aggressive Males