Emotions are functional brain states that usually cause external changes
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Across animal species, emotions are used to communicate
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in behavior.
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information about internal states and influence the way an individual makes
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decisions and takes actions to maximize survival. It is difficult to accurately,
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rapidly, and reproducibly identify emotions in animal models.
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humans, the subjective component of an emotion can be measured through
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self-evaluation and verbal expression.
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In animals,( B ) can only be
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estimated with indirect measures. Homology* to human behavior is currently
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used to recognize emotion in different animal species%; identifying emotions
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