The Effects of Sadness Induction on the Sense of Ownership

The data shows the effects of a sadness induction on the Rubber Hand Illusion. Our experiment was composed of three experimental groups. One group saw neutral pictures in the beginning of each trial, one group saw subliminally presented sad pictures and one group saw supraliminally presented sad pictures. Following the picture presentation, the Rubber Hand Illusion task was performed. Before and after the stimulation, the proprioceptive estimation of the left index finger was taken and a questionnaire on the subjective illusion strength (Botvinick & Cohen, 1998) was surveyed after the post-proprioception measurement. We performed the picture task and the rubber hand illusion task 4 times, each time applying a different stroking style. Stroking was carried out either synchronously (SY) or asynchronously (AS) combined with either slow (3cm/s) (SL) or fast (30cm/s) (FA) stroking speed. At the baseline and after each picture task, participants completed the SAM scale (Bradley & Lang, 1994). In the end, demographical information was surveyed, as well as a questionnaire on dissociative symptoms (FDS; Freyberger et al., 1999).

本数据集呈现了悲伤情绪诱导对橡皮手错觉（Rubber Hand Illusion）的影响。本实验共设置三组实验分组：一组在每个试次的起始阶段呈现中性图片，一组呈现阈下悲伤图片，另一组呈现阈上悲伤图片。图片呈现环节结束后，被试将完成橡皮手错觉任务。在抚触刺激实施前后，我们会对被试的左手食指进行本体感受评估；且在本体感受后测环节结束后，还将收集关于主观错觉强度的问卷数据（Botvinick & Cohen, 1998）。本实验中，图片任务与橡皮手错觉任务各重复执行4次，每次采用不同的抚触范式。抚触操作分为同步（SY）与异步（AS）两种模式，且分别搭配慢（3cm/s，SL）与快（30cm/s，FA）两种抚触速度。在基线阶段与每一轮图片任务结束后，被试均需完成SAM情绪自评量表（Bradley & Lang, 1994）。实验收尾阶段，我们将收集被试的人口统计学信息，以及关于分离症状的问卷数据（FDS；Freyberger等, 1999）。