researchers studying prairie voles say the rodents, which form monogamous relationships, experience a burst of the pleasure hormone dopamine in their brain when seeking and reuniting with their partner. However, after being separated for a lengthy period, they no longer experience such a surge.
We tend to think of it as getting over a breakup' because these voles can actually form a new bond after this change in dopamine dynamics something they can't do while the bond is still intact, said Dr Zoe Donaldson, a behavioural neuroscientist at CU Boulder and senior author of the work.
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