The controllability of aversive and neutral pictures: an event-related potential study.
The controllability of aversive and neutral pictures: an event-related potential study.
复制标题
DOI：
10.1016/j.bbr.2021.113265
复制
发表时间：
2021-06-25
影响因子：
2.7
通讯作者：
MacNamara A
中科院分区：
文献类型：
--
作者：
Bauer EA;Thomas G;MacNamara A
控制身体上令人厌恶的刺激可能会减少压力、唤醒和对这些刺激的生理反应。尽管如此，避免情绪厌恶的刺激/过度尝试控制负面情绪可能会增加这些刺激的显着性。在此，我们使用了一种新的范式来考察可控性对厌恶图片和中性图片加工的影响(使用晚期正电位，LPP)和反应不确定性(使用命令后负变化，PINV)。参与者(n=48)被告知，他们可以按下一个按钮来终止呈现厌恶或中性的图片，但这只在实验的某些阶段是正确的，而在其他阶段则不是。结果表明，与没有控制区相比，控制区的LPP更大，而且这是由第一个控制区中较大的LPP对厌恶图片的驱动，但仅限于在没有控制区开始任务的参与者。因此，知道厌恶的刺激可能并不总是可控的(即，先前的不可控经验)似乎会增加这些刺激的动机突显，一旦控制成为可能。此外，不可控性增加了早期和晚期的PINV，并且第二组的晚期PINV比第一组更大。因此，本研究提供了第一个证据，表明PINV可以使用厌恶和中性图片来诱发，并提示PINV早期和晚期的功能差异。结果支持这一新的范式用于检查对情绪刺激的控制。
Control over physically aversive stimuli may reduce stress, arousal and physiological responses to these stimuli. Nonetheless, avoidance of emotionally aversive stimuli/excessive attempts to control negative emotion might alternatively increase the salience of these stimuli. Here, we used a novel paradigm to examine the effect of controllability on the processing of aversive and neutral pictures (using the late positive potential, LPP) and response uncertainty (using the post-imperative negative variation, PINV). Participants (n = 48) were told that they could press a button to terminate the presentation of an aversive or neutral picture, but this was only true during some blocks of the experiment and not others. Results showed that the LPP was larger for control compared to no control blocks and that this was driven by larger LPPs to aversive pictures during the first control block, but only for participants who had started the task in a no control block. Therefore, knowing that aversive stimuli might not always be controllable (i.e., a prior experience of uncontrollability) appears to increase the motivational salience of these stimuli once control becomes possible. In addition, uncontrollability increased both the early and late PINV, and the late PINV was larger for the second compared to the first control block. As such, the current study provides the first evidence that the PINV can be elicited using aversive and neutral pictures and suggests functional differentiation between the early and late portions of the PINV. Results support the utility of this novel paradigm for examining control over emotional stimuli.
登录
查看更多内容
影响因子：
6.9
作者：
Diener C;Kuehner C;Brusniak W;Struve M;Flor H
通讯作者：
Flor H
影响因子：
2.6
作者：
Diener, Carsten;Struve, Maren;Flor, Herta
通讯作者：
Flor, Herta
影响因子：
4.6
作者：
Hajcak, Greg;Meyer, Alexandria;Kotov, Roman
通讯作者：
Kotov, Roman
影响因子：
3.7
作者：
KATHMANN, N;JONITZ, L;ENGEL, RR
通讯作者：
ENGEL, RR
影响因子：
2.6
作者：
Lang, Peter J.;Bradley, Margaret M.
通讯作者：
Bradley, Margaret M.