Using video recordings of the setup phase of cognitive neuroscience experiments, we examine episodes where experimenters show and tell participants how a particular tool (a “blunt needle”) will be used and how that might feel. We analyze how experimenters describe and demonstrate prospective sensations for participants. We show that experimenters often describe sensations “by negation” (saying what participants will not experience) and sometimes “indirectly” (for example, by formulating what they will do). We show that these descriptions are elaborated through demonstrations of sensations, both on the experimenters' and the participants' bodies. Importantly, we document how the interplay of the description and demonstration of sensations is important in reassuring participants about the nonharmful nature of the tool and its use.

中文翻译：

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配置预期的感觉：实验人员为参与者准备可能的感受

通过使用认知神经科学实验准备阶段的录像，我们检查了实验人员展示的剧集，并告诉参与者如何使用特定工具（“钝针”）以及感觉如何。我们分析实验者如何描述和证明参与者的预期感受。我们表明，实验者通常通过“否定”（说出参与者将不会经历的东西）来描述感觉，有时甚至是“间接地”（例如通过表述他们将要做什么）来描述感觉。我们表明，这些描述是通过对实验者和参与者身体的感觉演示来详细阐述的。重要的是，我们记录了感觉的描述和演示的相互作用对于使参与者放心该工具的无害性质及其使用方式非常重要。