A shape-label matching task is commonly used to examine the self-advantage in motor reaction-time responses (the Self-Prioritization Effect; SPE). In the present study, auditory labels were introduced, and, for the first time, responses to unisensory auditory, unisensory visual, and multisensory object-label stimuli were compared across block-type (i.e., trials blocked by sensory modality type, and intermixed trials of unisensory and multisensory stimuli). Auditory stimulus intensity was presented at either 50 dB (Group 1) or 70 dB (Group 2). The participants in Group 2 also completed a multisensory detection task, making simple speeded motor responses to the shape and sound stimuli and their multisensory combinations. In the matching task, the SPE was diminished in intermixed trials, and in responses to the unisensory auditory stimuli as compared with the multisensory (visual shape+auditory label) stimuli. In contrast, the SPE did not differ in responses to the unisensory visual and multisensory (auditory object+visual label) stimuli. The matching task was associated with multisensory ‘costs’ rather than gains, but response times to self- versus stranger-associated stimuli were differentially affected by the type of multisensory stimulus (auditory object+visual label or visual shape+auditory label). The SPE was thus modulated both by block-type and the combination of object and label stimulus modalities. There was no SPE in the detection task. Taken together, these findings suggest that the SPE with unisensory and multisensory stimuli is modulated by both stimulus- and task-related parameters within the matching task. The SPE does not transfer to a significant motor speed gain when the self-associations are not task-relevant.

形状标签匹配任务通常用于检查运动反应时间反应中的自我优势（自我优先效应；SPE）。在本研究中，引入了听觉标签，并且首次比较了对非感官听觉、非感官视觉和多感官对象标签刺激的反应跨块类型（即，被感官模式类型阻断的试验和混合试验单感觉和多感觉刺激）。听觉刺激强度以 50 dB（第 1 组）或 70 dB（第 2 组）呈现。第 2 组的参与者还完成了一项多感官检测任务，对形状和声音刺激及其多感官组合做出简单的加速运动反应。在匹配任务中，SPE 在混合试验中减少，与多感官（视觉形状+听觉标签）刺激相比，对非感官听觉刺激的反应。相比之下，SPE 对非感官视觉和多感官（听觉对象+视觉标签）刺激的反应没有差异。匹配任务与多感官“成本”而非收益相关，但对自我与陌生人相关刺激的响应时间受到多感官刺激类型（听觉对象+视觉标签或视觉形状+听觉标签）的不同影响。因此，SPE 通过块类型以及对象和标签刺激方式的组合进行调制。检测任务中没有 SPE。总之，这些发现表明，具有非感觉和多感觉刺激的 SPE 受到匹配任务中刺激和任务相关参数的调节。