疼痛对青年男性注意网络测试的影响

The effect of tonic pain stimulation on the attention network test in young males

目的研究疼痛对注意行为的影响。方法对20名健康在校大学生采用左上臂加压持续性疼痛诱发疼痛，分别在疼痛条件，压迫条件，及在无疼痛条件下进行一次注意网络测试（ANT），试验顺序随机，电脑自动记录反应时，疼痛过后立即用麦克吉尔量表进行疼痛评估。结果①3种试验条件下注意网络中的执行网络时间有差异，疼痛条件下为（120．24±18．21）ms，压迫感条件为（94．06±25．28）ms，无疼痛条件下为（92．51±35．71）ms，疼痛条件下执行网络的时间明显延长，差异显著（F=76．31，P〈0．01）。②疼痛条件下疼痛所导致的负面情绪分数与疼痛条件下的反应时成正相关（r=0．11，P=0．03）。结论疼痛能影响注意网络的执行网络的功能，疼痛所导致的负面情绪能干扰注意。

Objective To investigate the effect of tonic pain stimulation on the attention network test （ANT）. Methods Twenty healthy males recruited from university were enrolled in this study,and laboratory pain was induced by cuff pressure stimulation on the upper arm. All subjects performed the task separately under pain, no-pain and pressure conditions. The reaction time and accuracy rate of the ANT were quantified. The subjective pain perception was assessed by the short-form McGill Pain Questionnaire （SF-MPQ）. Results Across three conditions, the executive network showed significant pain effect （F = 76.31, P 〈 0. 001 ） ： no-pain condition at （92.51 ± 35.71 ） ms, pressure condition at （ 94.06 ± 25.28 ） ms, pain condition at （ 120.24 ± 18.21 ） ms. Furthermore, the average reaction time and the A-scores （i. e. affective words） in SF-MPQ caused by pain was positively correlated （ r = 0.11, P = 0.03 ） . Conclusion Pain can result in deficit in the executive network for attention regulation. The negative affections caused by pain can interfere with attention.