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首页> 外文期刊>Journal of psychophysiology >Male Smokers' Behavioral and Brain Responses to Deviant Cigarette-Related Stimuli in a Two-Choice Oddball Paradigm
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Male Smokers' Behavioral and Brain Responses to Deviant Cigarette-Related Stimuli in a Two-Choice Oddball Paradigm

机译：男性吸烟者的行为和大脑响应在双重选择的奇怪范式中对不同的卷烟相关的刺激

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摘要

Experimental studies on smoking and response-inhibition capacity have revealed inconsistent findings, which might be due to differences in sensitivity of the behavioral paradigms used. Here we aimed to replicate the impaired response inhibition in male smokers that was found in a previous study using a two-choice oddball task. This task enables the use of response times as index of inhibition capacity and equalizes the response requirement for the different trial types. In addition, we measured event-related brain potentials to explore the nature of the cognitive processes underlying the behavioral difference. Smokers (n = 19) and non-smokers (n = 19) were asked to make a different response to frequent standard stimuli (cigarette-unrelated pictures) than to infrequent deviant stimuli (cigarette-related pictures). Compared to non-smokers, smokers took a longer time to respond to deviant but not standard stimuli. In addition, smokers, but not non-smokers, displayed a smaller N2 amplitude to deviant than standard stimuli, and only the non-smokers showed larger P3 amplitudes to deviant compared to standard stimuli. Moreover, the response time (RT) measure was differentially correlated with N2 and P3 amplitudes in smokers and non-smokers. The joint results support the notion of deviant cognitive processes in smokers compared to non-smokers that are either directly or indirectly related to response-inhibition capacity.
机译：吸烟和反应抑制能力的实验研究表明了不一致的发现，这可能是由于所用行为范式的敏感性的差异。在这里，我们旨在通过双选择奇怪的任务来复制在先前研究中发现的男性吸烟者中的反应抑制。此任务使得能够使用响应时间作为抑制容量的索引，并均衡不同试验类型的响应要求。此外，我们测量了与事件相关的大脑潜力，以探讨行为差异的认知过程的性质。吸烟者（n = 19）和非吸烟者（n = 19）被要求对频繁的标准刺激（卷烟无关图片）进行不同的反应，而不是少常见的刺激（卷烟相关的图片）。与非吸烟者相比，吸烟者花了更长时间的时间来回应异常但不是标准刺激。此外，吸烟者，但不是非吸烟者，比标准刺激的差异显示出较小的N2幅度，并且与标准刺激相比，只有非吸烟者向偏差显示出更大的P3振幅。此外，响应时间（RT）测量与吸烟者和非吸烟者中的N2和P3幅度差异相关。与非吸烟者相比，联合结果支持吸烟者中的偏差认知过程的概念与响应抑制能力直接或间接相关。

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