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Related Experiment Videos

Acquired immobility response in weaver mutant mice.

R Lalonde

    Experimental Neurology
    |December 1, 1986
    PubMed
    Summary

    Weaver mutant mice did not show immobility in a forced swim test. These mice exhibited less swimming ability but more vigor, suggesting the cerebellum influences swimming behavior.

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    Area of Science:

    • Neuroscience
    • Animal Behavior

    Background:

    • The forced swimming task is a common behavioral test used to assess depression-like behavior in rodents.
    • The cerebellum is known to play a role in motor control, but its specific contribution to behaviors like immobility in forced swimming tasks is not fully understood.

    Purpose of the Study:

    • To investigate the role of the cerebellum in the immobility response observed in the forced swimming task.
    • To characterize the swimming behavior of weaver mutant mice, which have cerebellar defects.

    Main Methods:

    • Weaver mutant mice and normal littermate controls were subjected to a forced swimming task.
    • Swimming performance, including ability and vigor, was assessed and compared between the two groups.

    Main Results:

    • Weaver mutant mice did not display the typical immobility response seen in control mice.
    • Mutant mice exhibited reduced swimming ability but increased swimming vigor compared to controls.

    Conclusions:

    • The cerebellum appears to play a significant role in the acquisition of the immobility response during the forced swimming task.
    • Cerebellar function influences not only motor execution but also the behavioral strategies employed in response to stressful stimuli.

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