Additionally, the arousal threshold falls as we age, so that sounds and other interruptions are more likely to awaken us.

另外，随着年龄的增加，半夜惊醒的次数也逐渐增多，声音或其它干扰都很有可能吵醒我们。

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The average of intensities of the maximum stimulus not causing arousal and the minimum stimulus causing arousal is considered as current perception threshold.

被试的电流感觉阈值可以定义为无皮肤电流响应时所接受的最大刺激强度和有皮肤电流响应时所接受的最小刺激强度的平均值。

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