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n-back

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n-back任务是一种连续实行任务, 被广泛应用于神经成像中来刺激测试者的大脑活动。 它由 Wayne Kirchner 在1958年提出.[1]

任务

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N-back任务是一连串的刺激物,该任务要求测试者在当前的刺激物与第n次之前的相符时做出反应。负载因素n可以被调节以改变任务的难度。

例如,一个仅以听觉测试的3-back任务可能要求测试者读以下一串字母:

T L H C H O C Q L C K L H C Q T R R K C H R

当读到加粗字体的字母时,测试者应给出反应,因为这些字母与其三项之前的字母相符。

參考文獻

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  1. ^ Kirchner, W. K. (1958), Age differences in short-term retention of rapidly changing information. Journal of Experimental Psychology, 55(4), 352-358
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