Batabyal T, Muthukrishnan S P, Sharma R, Tayade P, Kaur S
Stress and Cognitive Electroimaging Laboratory, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India.
Neurosci Lett. 2018 Oct 15;685:1-6. doi: 10.1016/j.neulet.2018.07.019. Epub 2018 Jul 18.
Emotional stimuli are known to capture attention and disrupt the executive functioning. However, the dynamic interplay of neural substrates of emotion and executive attentional network is widely unexplored. The present study attempts to elucidate the areas implicated during emotional interference condition. Fifteen right handed individuals [24.64 ± 2.63 years] performed two emotional interference tasks - Face Word Interference and Word Face Interference. Single trial EEG was recorded during baseline (eyes open) and during the tasks. The activity of the cortical sources was compared between the tasks and baseline for 66 gyri using sLORETA software. Eighteen gyri in Face Word Interference and fifty-four gyri in Word Face Interference have shown significantly decreased activity [p < 0.05/66] with respect to baseline respectively. Interestingly, in both the interference tasks, there was disengagement of fronto-parietal attentional networks (implicating the probable ability of emotional stimuli to disrupt cognition) and the areas associated with default mode network. Further, during baseline there was significant activity in premotor cortical areas, which may be due to active inhibition of motor movements associated with response.
已知情绪刺激会吸引注意力并干扰执行功能。然而，情绪与执行注意网络的神经基质之间的动态相互作用在很大程度上尚未得到探索。本研究试图阐明在情绪干扰条件下涉及的区域。15名右利手个体[24.64±2.63岁]执行了两项情绪干扰任务——面孔-单词干扰和单词-面孔干扰。在基线期（睁眼）和任务执行期间记录单次试验脑电图。使用sLORETA软件比较了66个脑回在任务和基线期之间的皮质源活动。面孔-单词干扰中的18个脑回和单词-面孔干扰中的54个脑回相对于基线期分别显示出显著降低的活动[p<0.05/66]。有趣的是，在这两项干扰任务中，额顶叶注意网络（意味着情绪刺激可能破坏认知的能力）和与默认模式网络相关的区域均出现了解离。此外，在基线期，运动前皮质区域有显著活动，这可能是由于对与反应相关的运动动作的主动抑制。
