Knyazev G G, Bocharov A V, Savostyanov A N
Fiziol Cheloveka. 2016 May-Jun;42(3):103-9.
We studies the differences in oscillatory responses to emotional facial expressions in 40 subjects with different severity of depressive symptoms (19 men and 21 women) aged 18-30 years. In subjects with low severity of depressive symptoms (group 2), the perception of happy facial expressions was marked by lower delta synchronization as compared with angry and neutral expressions; in subjects with high severity of depressive chronization as compared with angry and neutral expression; in subjects with high severity of depressive symptoms (group 1), the perception of happy faces was marked by higher delta synchronization. Since an increase in delta oscillations is usually observed in aversive conditions, we suggest that happy facial expressions are perceived as negative stimuli by the subjects of group 1. The perception of angry facial expressions was accompanied by alpha band desynchronization in Group 2 and by alpha synchronization in Group 1. Basing on Klimesch's theory, this effect suggests that the subjects of group 1 are initially set up for the perception of negative emotional information. The effect of emotional stimulus category was significant in group 2, but not significant in group 1, which is an evidence of disorders in the recognition of emotional information in depression-prone individuals.
我们研究了40名年龄在18至30岁之间、抑郁症状严重程度不同的受试者（19名男性和21名女性）对情绪化面部表情的振荡反应差异。在抑郁症状较轻的受试者（第2组）中，与愤怒和中性表情相比，对快乐面部表情的感知表现为较低的δ波同步化；在抑郁症状严重的受试者（第1组）中，与愤怒和中性表情相比，对快乐面部表情的感知表现为较高的δ波同步化。由于通常在厌恶条件下会观察到δ波振荡增加，我们认为第1组受试者将快乐面部表情视为负面刺激。在第2组中，对愤怒面部表情的感知伴随着α波段去同步化，而在第1组中则伴随着α波同步化。基于克利梅施的理论，这种效应表明第1组受试者最初倾向于感知负面情绪信息。情绪刺激类别的效应在第2组中显著，但在第1组中不显著，这证明了易抑郁个体在情绪信息识别方面存在障碍。
