During the tests, participants were told to step four paces to the left, right, backward or forward.

在测试过程中，受试者还被要求向前、或向后、或向左、或向右走4步。

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During the tests, participants were told to step four paces to the left, right, backward or forward.

在测试过程中，受试者还被要求向前、或向后、或向左、或向右走4步。

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