Audio long read: Lab mice go wild — making experiments more natural in order to decode the brain
Nature Podcast
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The Neurobiology of Aggression
A group of neurons in the hypothalamus gradually ramped up activity to a level that correlated with what the mouse did. At low levels, the animal might freeze or ignore the other mouse. But as levels built up over tens of seconds, it might show signs of aggression - such as trying to mount the other mouse at high levels. The neurons seemed to function like a volume dial for aggression. And what's more, the levels vary between mice, with some creatures almost never attacking and some quick to do so.
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