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Pain perception in decapitated rat brain.

R F Derr
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Abstract

The question of humaneness of decapitation per se has been considered. The time required for the oxygen tension in decapitated rat brain to decline to a level at which the brain becomes unconscious was estimated to be 2.7 sec. Assuming that decapitation is a powerful arousal stimulus and that the resulting EEG activation (low voltage, fast activity) indicates a conscious awareness of pain and distress the maximum time the pain and distress could be perceived would be 2.7 sec. Hence, decapitation of rats per se may be considered humane.

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AnimalsBrainEuthanasiaOxygen ConsumptionPainRatsSensory ThresholdsJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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R F Derr. 1991. Pain perception in decapitated rat brain.. https://doi.org/10.1016/0024-3205(91)90391-n

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