Giving them cannabis-like drugs enhances the 50 kHz UV vocalizations ("laughter") rats emit during social play http://link.springer.com/chapter/10.1007%2F978-1-4939-2294-9_10 …
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Giving them cannabis-like drugs enhances the 50 kHz UV vocalizations ("laughter") rats emit during social play http://link.springer.com/chapter/10.1007%2F978-1-4939-2294-9_10 …