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首页> 外文期刊>BMC Neuroscience >Alexithymia and the labeling of facial emotions: response slowing and increased motor and somatosensory processing
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Alexithymia and the labeling of facial emotions: response slowing and increased motor and somatosensory processing

机译：头疼症和面部表情标签：反应减慢，运动和体感处理增加

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Background Alexithymia is a personality trait that is characterized by difficulties in identifying and describing feelings. Previous studies have shown that alexithymia is related to problems in recognizing others’ emotional facial expressions when these are presented with temporal constraints. These problems can be less severe when the expressions are visible for a relatively long time. Because the neural correlates of these recognition deficits are still relatively unexplored, we investigated the labeling of facial emotions and brain responses to facial emotions as a function of alexithymia. Results Forty-eight healthy participants had to label the emotional expression (angry, fearful, happy, or neutral) of faces presented for 1 or 3?seconds in a forced-choice format while undergoing functional magnetic resonance imaging. The participants’ level of alexithymia was assessed using self-report and interview. In light of the previous findings, we focused our analysis on the alexithymia component of difficulties in describing feelings. Difficulties describing feelings, as assessed by the interview, were associated with increased reaction times for negative (i.e., angry and fearful) faces, but not with labeling accuracy. Moreover, individuals with higher alexithymia showed increased brain activation in the somatosensory cortex and supplementary motor area (SMA) in response to angry and fearful faces. These cortical areas are known to be involved in the simulation of the bodily (motor and somatosensory) components of facial emotions. Conclusion The present data indicate that alexithymic individuals may use information related to bodily actions rather than affective states to understand the facial expressions of other persons.
机译：背景背景虚度症是一种人格特质，其特征在于难以识别和描述情感。先前的研究表明，运动障碍与在出现时间限制的情况下识别他人的情绪表情有关。当表达式在相当长的一段时间内可见时，这些问题可能不会那么严重。由于这些识别缺陷的神经相关仍然相对未开发，因此我们调查了面部表情的标签以及大脑对面部表情的反应作为运动障碍的函数。结果四十八名健康参与者在进行功能性磁共振成像时，必须以强迫选择的方式标记呈现1或3秒的面部表情（愤怒，恐惧，快乐或中立）。通过自我报告和访谈来评估参与者的运动障碍程度。根据先前的发现，我们将分析的重点放在描述情感的困难中的运动障碍成分上。访谈所评估的描述情感的困难与负面（即愤怒和恐惧）面孔的反应时间增加有关，但与标签准确性无关。此外，具有较高读写障碍的人在面对生气和恐惧的面孔时表现出体感皮质和辅助运动区（SMA）的大脑激活增加。已知这些皮质区域参与面部表情的身体（运动和体感）成分的模拟。结论目前的数据表明，有运动能力的人可以使用与身体动作有关的信息，而不是与情感状态有关的信息来理解他人的面部表情。

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