The frontal cortex appears to be asymmetrically related to approach motivation, avoidance motivation, and motivational conflict. Much past work has investigated approach and avoidance motivation, but little work has investigated frontal asymmetry in the face of motivational conflict in part because of the inherent conflict between avoidance motivation and motivational conflict. The current study sought to disentangle the existing confound between avoidance motivation and motivational conflict. In the study, participants selected the likelihood of viewing negative (vs. positive) images for zero reward points (avoidance only condition), or negative (vs. positive) images for the chance to win reward points (approach–avoidance conflict conditions). Participants exhibited greater relative right frontal asymmetry while making percent likelihood selections in the approach–avoidance conflict conditions relative to the avoidance only conditions. Additionally, participants exhibited greater relative right frontal asymmetry while viewing disgust images during trials with the greatest approach–avoidance conflict relative to trials with the lowest approach–avoidance conflict. Together, these results suggest that motivational conflict, and not avoidance motivation, is associated with greater relative right frontal activity.

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接近-避免冲突范式中的正面不对称

额叶皮层似乎与接近动机、回避动机和动机冲突不对称相关。过去的许多工作都研究了接近和回避动机，但很少有工作研究面对动机冲突的正面不对称性，部分原因是回避动机和动机冲突之间存在内在冲突。目前的研究试图解开回避动机和动机冲突之间现有的混淆。在这项研究中，参与者选择查看负面（与正面）图像的可能性为零奖励点（仅回避条件），或负面（与正面）图像以获得获得奖励点的机会（接近-回避冲突条件）。参与者表现出更大的相对右额不对称性，同时相对于仅回避条件在接近回避冲突条件下进行百分比可能性选择。此外，参与者在观看厌恶图像时表现出更大的相对右额不对称性，相对于采用最低接近-回避冲突的试验，在采用最大接近-回避冲突的试验期间。总之，这些结果表明动机冲突，而不是回避动机，与更大的相对右侧额叶活动相关。参与者在观看厌恶图像时表现出更大的相对右额不对称性，相对于采用最低接近-回避冲突的试验，采用最大接近-回避冲突的试验。总之，这些结果表明动机冲突，而不是回避动机，与更大的相对右侧额叶活动相关。参与者在观看厌恶图像时表现出更大的相对右额不对称性，相对于采用最低接近-回避冲突的试验，采用最大接近-回避冲突的试验。总之，这些结果表明动机冲突，而不是回避动机，与更大的相对右侧额叶活动相关。