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02 Dec, 2023
Whether dreaming of a white Christmas or simply pondering how best to rearrange the furniture, humans are able to conjure up myriad situations that are not in front of us. Now it seems rats may be able to do something similar.
Researchers have found that rats can navigate their way through a space they have previously explored using their thoughts alone, suggesting the rodents have some sort of imagination.
... the researchers note that a region of the brain called the hippocampus contains a sort of mental model, or map, depicting previously explored environments. When an individual moves through specific locations within such an environment, particular neurons fire in the brain.
However, humans can, at will, imagine navigating their way through places they have previously visited – for example the corridors of a workplace.
To explore whether rats can do the same, and unpick a possible mechanism, researchers employed a brain-machine interface in which electrodes were surgically implanted into the rats’ brains. The rats were then placed on a treadmill ball within a 360-degree immersive virtual reality (VR) arena, and presented with an on-screen goal to run towards.
source: the guardian,
Tags: science
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