Rats Get Stressed When Exposed to Light, Says Study
In a breakthrough revelation, it has been revealed that rodents also suffer from seasonal gloom. Recently, a group of US researchers has revealed that rats suffer from a form of seasonal affective disorder (SAD).
The study was carried out by a group of researchers from the University of California at San Diego. Humans also get low during winters, but it's quite opposite with rats. They are creatures of night and get disturbed by day's brightness.
Study researcher Professor Nicholas Spitzer found rats to be in stress and full of anxiety as soon as days start getting longer and spring approaches. Rats are nocturnal; therefore, it's the day brightness that put rats under stress.
While explaining basic habits of rats, which is a nocturnal creature, Spitzer said that rats look out for food in night. The study, which has been published in the journal Science, is based on a series of experiments on rats.
Study researchers made rats exposed to light for 19 hours and kept them in dark for just five hours for a week. After assessing rodents' brain chemistry, it was found that rats were witnessing increased levels of stress and anxiety.
"Because rats are nocturnal, they're less stressed at night, which is good because that's when they can spend more time foraging or eating", said study researchers.
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