The Effects of Meaning and Emotional Content of a Sentence on the Kinematics of a Successive Motor Sequence Mimiking the Feeding of a Conspecific.
The Effects of Meaning and Emotional Content of a Sentence on the Kinematics of a Successive Motor Sequence Mimiking the Feeding of a Conspecific.
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DOI：
10.3389/fpsyg.2016.00672
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发表时间：
2016
影响因子：
3.8
通讯作者：
Gentilucci M
中科院分区：
文献类型：
--
作者：
De Stefani E;De Marco D;Gentilucci M
目的：句子的情感内容和意义是否会影响连续运动序列的运动学？材料和方法：参与者观察了演员说出表达积极或消极情绪和意义的句子的视频片段(在实验1中与快乐或愤怒有关，在实验2中与食物欣赏或食物厌恶有关)。然后，他们伸手抓住，把一个糖块放在演员的嘴里。受试者对其内容可以传达(1)情绪(即面部表情和韵律)和意义、(2)仅有意义或(3)仅有情绪的句子做出反应。在每个条件下，比较了表达积极情绪和消极情绪的句子的运动学效果。通过情感或意义传递的刺激(积极的食物欣赏和消极的食物厌恶)对抓握和伸展的运动学都有类似的影响。结果：在实验一中，无论是正反两种表达形式，还是单独表达意义时，正反句的运动学特征都不存在差异。相比之下，在单一情感的情况下，正价句子更快地接近同位。在实验2中，情绪的效价(对食物的赞赏是积极的，对食物厌恶是消极的)影响抓握和伸展的运动学，与通道无关。讨论：实验1中缺乏意义的影响可能是因为句子意义与运动序列目标(摄食)的相关性较弱。实验2证明确实如此，因为当意义和随后的情绪与序列目标相关时，它们会影响运动学。相反，单一情绪根据正反向效价激活了对行为者的接近或回避。这些数据表明，情绪和意义的影响之间存在行为上的分离。
Aim: Do the emotional content and meaning of sentences affect the kinematics of successive motor sequences? Material and Methods: Participants observed video-clips of an actor pronouncing sentences expressing positive or negative emotions and meanings (related to happiness or anger in Experiment 1 and food admiration or food disgust in Experiment 2). Then, they reached-to-grasp and placed a sugar lump on the actor’s mouth. Participants acted in response to sentences whose content could convey (1) emotion (i.e., face expression and prosody) and meaning, (2) meaning alone, or (3) emotion alone. Within each condition, the kinematic effects of sentences expressing positive and negative emotions were compared. Stimuli (positive for food admiration and negative for food disgust), conveyed either by emotion or meaning affected similarly the kinematics of both grasp and reach. Results: In Experiment 1, the kinematics did not vary between positive and negative sentences either when the content was expressed by both emotion and meaning, or meaning alone. In contrast, in the case of sole emotion, sentences with positive valence made faster the approach of the conspecific. In Experiment 2, the valence of emotions (positive for food admiration and negative for food disgust) affected the kinematics of both grasp and reach, independently of the modality. Discussion: The lack of an effect of meaning in Experiment 1 could be due to the weak relevance of sentence meaning with respect to the motor sequence goal (feeding). Experiment 2 demonstrated that, indeed, this was the case, because when the meaning and the consequent emotion were related to the sequence goal, they affected the kinematics. In contrast, the sole emotion activated approach or avoidance toward the actor according to positive and negative valence. The data suggest a behavioral dissociation between effects of emotion and meaning.