A new study finds that pregnancy hormones in mice alter the brain circuits involved in 'mothering,' researchers say.
A study of female mice found that two hormones produced during pregnancy alter brain circuits that control parenting behaviors, a teamThe changes make an animal's brain more responsive to the odors and sounds from mouse babies, and appear to remodel"parenting circuits" in the brain to work more efficiently, saysWhy beautiful sadness — in music, in art — evokes a special pleasureAlthough human brains are vastly more complicated than mouse brains, McCarthy says, the finding could...
Kohl and a team of scientists thought these circuits might be affected by two hormones that are produced in greater quantity during pregnancy.A house mouse mother nurses her litter in a nest. A new study on female lab mice finds that hormones released during pregnancy reshape their brains, preparing them to care for young.A house mouse mother nurses her litter in a nest.
Without the neurons and receptors, mice who gave birth didn't even try to nurse their pups. Other experiments have shown that artificially activating these hormone receptors causes virgin mice to act like mothers.
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