Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention, School of Psychology and Cognitive Science, East China Normal University, No. 3663, North Zhong Shan Road, Shanghai, 200062, China.
Department of Psychology, Research Center for Psychology and Behavioral Sciences, Soochow University, Suzhou, China.
Cogn Affect Behav Neurosci. 2024 Oct;24(5):881-893. doi: 10.3758/s13415-024-01202-y. Epub 2024 Jul 2.
Previous research has indicated that the left dorsolateral prefrontal cortex (DLPFC) exerts an influence on attentional bias toward visual emotional information. However, it remains unclear whether the left DLPFC also play an important role in attentional bias toward natural emotional sounds. The current research employed the emotional spatial cueing paradigm, incorporating natural emotional sounds of considerable ecological validity as auditory cues. Additionally, high-definition transcranial direct current stimulation (HD-tDCS) was utilized to examine the impact of left dorsolateral prefrontal cortex (DLPFC) on attentional bias and its subcomponents, namely attentional engagement and attentional disengagement. The results showed that (1) compared to sham condition, anodal HD-tDCS over the left DLPFC reduced the attentional bias toward positive and negative sounds; (2) anodal HD-tDCS over the left DLPFC reduced the attentional engagement toward positive and negative sounds, whereas it did not affect attentional disengagement away from natural emotional sounds. Taken together, the present study has shown that left DLPFC, which was closely related with the top-down attention regulatory function, plays an important role in auditory emotional attentional bias.
先前的研究表明，左背外侧前额叶皮层（DLPFC）对视觉情绪信息的注意力偏向施加影响。然而，左 DLPFC 是否对自然情绪声音的注意力偏向也起着重要作用尚不清楚。本研究采用情绪空间线索范式，将具有高度生态有效性的自然情绪声音作为听觉线索。此外，还采用了高清晰度经颅直流电刺激（HD-tDCS）来检查左背外侧前额叶皮层（DLPFC）对注意力偏向及其子成分（即注意力投入和注意力解除）的影响。结果表明：（1）与假刺激条件相比，左 DLPFC 的阳极 HD-tDCS 减少了对正、负声音的注意力偏向；（2）左 DLPFC 的阳极 HD-tDCS 减少了对正、负声音的注意力投入，但对从自然情绪声音中解除注意力的影响没有影响。综上所述，本研究表明，与自上而下的注意力调节功能密切相关的左 DLPFC 在听觉情绪注意力偏向中起着重要作用。
