Davidson R J, Fox N A
Science. 1982 Dec 17;218(4578):1235-7. doi: 10.1126/science.7146906.
Ten-month-old infants viewed videotape segments of an actress spontaneously generating a happy or sad facial expression. Brain activity was recorded from the left and right frontal and parietal scalp regions. In two studies, infants showed greater activation of the left frontal than of the right frontal area in response to the happy segments. Parietal asymmetry failed to discriminate between the conditions. Differential lateralization of the hemispheres for affective processes seems to be established by 10 months of age.
10个月大的婴儿观看了一段女演员自发产生快乐或悲伤面部表情的录像片段。从左右额叶和顶叶头皮区域记录大脑活动。在两项研究中，婴儿在观看快乐片段时，左额叶的激活程度比右额叶更大。顶叶的不对称性未能区分这两种情况。情感过程中大脑半球的差异侧化似乎在10个月大时就已确立。
