Rats' heart rate and grooming activity in the open field

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Observed 30 male long-evans hooded rats in a novel open-field situation under different levels of white noise and illumination. Grooming and heart rate were recorded, the latter with a telemetry apparatus. Heart rates were lower when white noise and illumination were present, but no differences between groups exposed to different intensities were found. No grooming differences, either in amount or distribution in time, were observed. It is concluded that heart rate and grooming in novel open-field situations are unrelated. (21 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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