Rats Trail Behind Shrews, Monkeys, and Humans in Visual Problem Solving
Rats take a fundamentally different approach toward solving a simple visual discrimination task than tree shrews, monkeys, and humans, according to a comparative study of the four mammal species published in eNeuro. The work could have important implications for the translation of research in animal models to humans.
Credit: Mustafar et al., eNeuro (2018)
Gregor Rainer and colleagues addressed this gap in knowledge by comparing the ability of two species more closely related to humans — macaques (Macaca fascicularis) and tree shrews (Tupaia belangeri) — to discriminate a flickering light from two distracting stimuli. While the macaques and tree shrews used similar visual learning strategies and their performance improved over time, rats (Rattus norvegicus) were instead focused on where they had previously received a food reward and their performance did not improve. These findings suggest that rats use their brains differently than the other species in the context of this particular task.
Contacts and sources:
Citation: Divergent solutions to visual problem solving across mammalian species DOI: https://doi.org/10.1523/ENEURO.0167-18.2018
Corresponding author: Gregor Rainer (University of Fribourg, Switzerland), [email protected]
Source: http://www.ineffableisland.com/2018/07/rats-trail-behind-shrews-monkeys-and.html
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