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A functional near infrared spectroscopy (fNIRS) replication of the sunscreen persuasion paradigm

机译：防晒霜说服范式的功能性近红外光谱（fNIRS）复制

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摘要

Activity in medial prefrontal cortex (mPFC) during persuasive messages predicts future message-consistent behavior change, but there are significant limitations to the types of persuasion processes that can be invoked inside an MRI scanner. For instance, real world persuasion often involves multiple people in conversation. Functional near infrared spectroscopy (fNIRS) allows us to move out of the scanner and into more ecologically valid contexts. As a first step, the current study used fNIRS to replicate an existing fMRI persuasion paradigm (i.e. the sunscreen paradigm) to determine if mPFC shows similar predictive value with this technology. Consistent with prior fMRI work, activity in mPFC was significantly associated with message-consistent behavior change, above and beyond self-reported intentions. There was also a difference in this association between previous users and non-users of sunscreen. Activity differences based on messages characteristics were not observed. Finally, activity in a region of right dorsolateral PFC (dlPFC), which has been observed with counterarguing against persuasive messages, correlated negatively with future behavior. The current results suggest it is reasonable to use fNIRS to examine persuasion paradigms that go beyond what is possible in the MRI scanner environment.
机译：有说服力的消息期间内侧前额叶皮层（mPFC）的活动预测了未来消息一致的行为变化，但是对于可以在MRI扫描仪内部调用的说服过程类型有很大的限制。例如，现实世界中的说服通常涉及多个人的谈话。功能性近红外光谱（fNIRS）使我们能够从扫描仪中移出，进入更具生态学意义的环境。第一步，当前研究使用fNIRS复制现有的fMRI说服范式（即防晒霜范式），以确定mPFC是否通过该技术显示出相似的预测价值。与先前的fMRI工作一致，mPFC中的活动与信息一致的行为改变显着相关，超出了自我报告的意图。以前的防晒霜使用者和非防晒霜使用者之间的关联也有所不同。未观察到基于消息特征的活动差异。最后，在右背外侧PFC（dlPFC）区域中的活动与对未来的说服力呈负相关。目前的结果表明，使用fNIRS来检验说服范式是合理的，这些范式超出了MRI扫描仪环境所能提供的范围。

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