Concurrent emotional pictures modulate temporal order judgments of spatially separated audio-tactile stimuli
Concurrent emotional pictures modulate temporal order judgments of spatially separated audio-tactile stimuli
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并发情感图片调节空间分离的音频触觉刺激的时间顺序判断
DOI：
10.1016/j.brainres.2013.09.008
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发表时间：
2013
期刊：
影响因子：
2.9
通讯作者：
Müller
中科院分区：
文献类型：
--
作者：
Müller
尽管可以将注意力集中在高唤醒刺激上，但人们对一种模式中感知情绪如何影响其他模式中非情绪刺激的时间处理知之甚少。我们通过在观察者执行音频触觉时间顺序判断（TOJ）任务时向他们呈现空间上无信息的情感图片来解决这个问题。在实验 1 中，音频触觉刺激被呈现在参与者正前方的同一位置，参与者必须判断“哪种方式先出现？”。在实验2和实验3中，听觉触觉刺激一个传递到左侧，另一个传递到右侧，参与者必须判断“哪一侧先来？”。我们发现，当音频-触觉刺激在空间上分离时，负面和正面的高唤醒图片都会显着使 TOJ 偏向触觉并远离听觉事件。相比之下，当听觉-触觉刺激源自同一位置时，就不存在这种偏差。为了进一步检验这种偏差是否归因于图片所传达的情感意义或其高唤醒效应，我们在实验3中比较了近身威胁与远程威胁（情绪）图片对音频触觉TOJ的影响。这种偏差仅在近身威胁条件下表现出来。总而言之，研究结果表明，传达近身交互意义的视觉刺激会激活感觉运动功能链接，当这些信号在空间上分离时，触觉信号的处理优先于听觉信号。相比之下，来自同一位置的音频触觉信号会产生强烈的跨模态整合，从而抵消由情感图片引起的基于模态的注意力转移。
Although attention can be captured toward high-arousal stimuli, little is known about how perceiving emotion in one modality influences the temporal processing of non-emotional stimuli in other modalities. We addressed this issue by presenting observers spatially uninformative emotional pictures while they performed an audio-tactile temporal-order judgment (TOJ) task. In Experiment 1, audio-tactile stimuli were presented at the same location straight ahead of the participants, who had to judge “which modality came first?”. In Experiments 2 and 3, the audio-tactile stimuli were delivered one to the left and the other to the right side, and participants had to judge “which side came first?”. We found both negative and positive high-arousal pictures to significantly bias TOJs towards the tactile and away from the auditory event when the audio-tactile stimuli were spatially separated; by contrast, there was no such bias when the audio-tactile stimuli originated from the same location. To further examine whether this bias is attributable to the emotional meanings conveyed by the pictures or to their high arousal effect, we compared and contrasted the influences of near-body threat vs. remote threat (emotional) pictures on audio-tactile TOJs in Experiment 3. The bias manifested only in the near-body threat condition. Taken together, the findings indicate that visual stimuli conveying meanings of near-body interaction activate a sensorimotor functional link prioritizing the processing of tactile over auditory signals when these signals are spatially separated. In contrast, audio-tactile signals from the same location engender strong crossmodal integration, thus counteracting modality-based attentional shifts induced by the emotional pictures.
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