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1·Nothing happens until the excitatory stimulus exceeds a certain threshold value.

兴奋性刺激超过某一临界值以前毫无反应。

2·The cool pain and heat pain threshold may degrade or not differentiate when the increase of the rate of stimulus is not enough.

在刺激温度变化率增加不够大时，冷痛觉、热痛觉阈值可能随温度变化率增加而降低或无差别。

3·Objective: To understand the effect of different rates of stimulus on thermal threshold.

目的：在定量感觉检查中，探讨不同刺激温度变化率对温度觉阈值的影响。

4·The withdrawal threshold after mechanical stimulus on posterior limbs was observed.

测定其后肢机械刺激缩爪阈值。

5·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。

6·According to the conduction velocity of afferent fibers and stimulus threshold, evoked EPSCs that are mediated by A-like or C-like fibers were distinguished.

以传入纤维的传导速度与刺激阈值为指标，可以区分A样纤维与C样纤维兴奋性突触后电流。