Sulpizio Simone, Doi Hirokazu, Bornstein Marc H, Cui Joy, Esposito Gianluca, Shinohara Kazuyuki
Faculty of Psychology, Vita-Salute San Raffaele University, Milan, Italy.
Department of Neurobiology and Behavior, Nagasaki University, Graduate School of Biomedical Science, Japan.
Infant Behav Dev. 2018 Aug;52:89-96. doi: 10.1016/j.infbeh.2018.05.009. Epub 2018 Jun 14.
We hypothesized an association between auditory stimulus structure and activity in the brain that underlies infant auditory preference. In a within-infant design, we assessed brain activity to female and male infant directed relative to adult directed speech in 4-month-old infants using fNIRS. Results are compatible with the hypothesis that enhanced frontal brain activation, specifically in prefrontal cortex that is involved in emotion and reward, is evoked selectively by infant directed speech produced by female voices and may serve as a neuronal substrate for attention to and preference for "motherese" displayed by infants.
我们假设,婴儿听觉偏好背后的大脑活动与听觉刺激结构之间存在关联。在一项针对婴儿个体的设计中,我们使用功能近红外光谱技术(fNIRS),评估了4个月大婴儿在听到针对婴儿的女性和男性语音以及针对成人的语音时的大脑活动。结果与以下假设相符:由女性声音发出的针对婴儿的语音会选择性地诱发大脑额叶,特别是参与情感和奖赏的前额叶皮质的增强激活,这可能是婴儿对“妈妈语”产生关注和偏好的神经基础。