uit: http://neuroskeptic.blogspot.com/2010/06/f...Neuroskeptic%29Langford et al tried it out on mice with a certain genetic mutation, which causes severe migraines in humans. These mice displayed the pain face even in the absence of external painful stimuli, showing that they were suffering internally. A migraine drug was able to stop the pain.
Finally, lesions to a part of the brain called the anterior insula stopped mice from expressing their pain. This is exactly what happens in people as well, suggesting that our displays of suffering are an evolutionary ancient mechanism. Of course this kind of study can't prove that animals consciously feel pain in the same way that we do, but I see no reason to doubt it: we feel pain as a result of neural activity, and mammals have exactly the same brain systems.
Het besluit volgens de auteurs:
uit: Langford, D., Bailey, A., Chanda, M., Clarke, S., Drummond, T., Echols, S., et al. (2010). Coding of facial expressions of pain in the laboratory mouse Nature Methods, 7 (6), 447-449We developed the mouse grimace scale (MGS), a standardized behavioral coding system with high accuracy and reliability; assays involving noxious stimuli of moderate duration are accompanied by facial expressions of pain. This measure of spontaneously emitted pain may provide insight into the subjective pain experience of mice.
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