分视野范式呈现的情绪性面孔的加工

Facial Emotion Processing in the Split Visual-field Paradigm

研究采用36名被试(女20名,男16名),采用4种变化强度(5%、10%、20%、30%)的5种情绪面孔(愉快、惊讶、悲伤、厌恶、愤怒),记录被试对左右视野呈现的中性面孔和情绪面孔识别的正确率,考察情绪效价单侧化效应的性别差异。结果发现:积极情绪面孔比消极情绪面孔的识别正确率更高;表情强度高的面孔识别正确率高于表情强度低的面孔;女性被试对左视野出现的消极情绪面孔识别正确率高于右视野出现的消极情绪面孔,相反,对右视野出现的积极情绪面孔识别正确率更高。说明在女性被试上出现了效价单侧化效应。

With the divided visual field technique, 36 normal subjects were asked to discriminate among emotional faces. Neutral faces were shown paired with morphed images of different intensity of emotional faces. The results revealed the valence-specific laterality effect in women but not in men. When discriminating negative emotional expressions in the left visual field, female subjects performed significantly better; Conversely, when discriminating positive emotional expressions in the rigtht visual field, female subjects performed better than males.