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"By monitoring a well-replicated biomarker associated with reward, a study by neuroscientists from Florida Atlantic University provides evidence that the old adage, &quot;There's no place like home,&quot; has its roots deep in the brain. The study demonstrates that a signal for pleasure—dopamine—rises rapidly when mice are moved from a simple recording chamber to their home cage, but less so when they are returned to a cage not quite like the one they knew. Prior studies have shown that rodents will actively choose their home cage over a look-alike environment. Using a sensor for dopamine placed in the mouse brain's key reward center, FAU scientists are the first to demonstrate that home evokes a surge of dopamine that mimics the response to a dose of cocaine."
<https://medicalxpress.com/news/2020-11-dopamine-surge-reveals-mice-home.html>