Dawson G, Klinger L G, Panagiotides H, Hill D, Spieker S
Psychology Department, University of Washington, Seattle 98195.
Child Dev. 1992 Jun;63(3):725-37.
Studies of adults and infants indicate that the left frontal brain region is specialized for approach emotions, such as joy, whereas the right frontal region is specialized for withdrawal emotions, such as distress. Furthermore, depressed adults have been found to show reduced brain activity in the left frontal region. In this study, frontal and parietal electroencephalographic (EEG) activity was recorded from 27 infants aged 11-17 months (13 of whose mothers reported elevated depressive symptoms) during baseline and emotion-eliciting conditions. Compared with infants of nonsymptomatic mothers, infants of symptomatic mothers exhibited reduced left frontal brain activity during playful interactions with their mothers and failed to exhibit the typical pattern of greater right frontal activity during a condition designed to elicit distress (maternal separation). Infants of symptomatic mothers also showed less distress during maternal separation; however, no group differences in behavior were found during the playful condition. Group differences were evident in the frontal region, but not in parietal brain activity.
对成年人和婴儿的研究表明，左额叶脑区专门负责处理趋近性情绪，如喜悦，而右额叶脑区专门负责处理退缩性情绪，如痛苦。此外，研究发现抑郁的成年人左额叶脑区的大脑活动会减少。在这项研究中，记录了27名11至17个月大婴儿（其中13名婴儿的母亲报告有抑郁症状）在基线状态和情绪诱发条件下的额叶和顶叶脑电图（EEG）活动。与无症状母亲的婴儿相比，有症状母亲的婴儿在与母亲玩耍互动时左额叶脑活动减少，并且在旨在诱发痛苦的条件下（母婴分离）未表现出右额叶活动增强的典型模式。有症状母亲的婴儿在母婴分离期间也表现出较少的痛苦；然而，在玩耍条件下未发现行为上的组间差异。组间差异在额叶区域明显，但在顶叶脑活动中不明显。
