One way to investigate anxiety in laboratory animals (rats) is to measure their

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Time spent in the open arms of an elevated maze is a well-established measure of anxiety in laboratory animals, with anxiety-prone animals spending less time in the open arms. Immobility in forced swim tasks and sleep activity patterns can measure depression-like behaviors, while blood levels of GABA can be affected by a range of factors beyond anxiety (like stress and drug treatments).

One Way to Investigate Anxiety in Laboratory Animals (Rats) Is