behavior/neurological
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• juvenile males exhibit less spontaneous alternation in the Y-maze test
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• juvenile males spent more time in the open arms of the elevated plus maze test, indicating reduced anxiety
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• juvenile males show increased impulsive behaviors in the elevated plus maze test
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• juvenile males and females exhibit hyperactivity in the motor activity test, Y-maze test, and elevated plus maze test
• treatment with methylphenidate hydrochloride does not ameliorate hyperactivity
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