Bell Martha Ann
Department of Psychology Virginia Polytechnic Institute and State University.
Infancy. 2001 Jul;2(3):311-330. doi: 10.1207/S15327078IN0203_2. Epub 2001 Jul 1.
This work was designed to investigate individual differences in brain electrical activity during a looking version of the A-not-B task. It was proposed that this spatial task required the cognitive skills of working memory and inhibitory control, each associated with frontal lobe function. Electroencephalograms (EEGs) were recorded from 54 8-month-old infants during baseline and task. Only high performers on the looking task exhibited increases in 6- to 9-Hz EEG power from baseline to task. These task-related changes were evident at frontal and posterior scalp locations. High performers on the looking task exhibited lower EEG coherence values at right hemisphere frontal locations relative to the low performers. These lower coherence values were evident during baseline and task. All infants showed increased frontal-parietal coherence during the spatial working memory task relative to baseline values. These data confirm previous cognitive neuroscience work associating frontal lobe function with cognitive performance levels during infancy.
这项研究旨在调查在注视版A非B任务中大脑电活动的个体差异。研究提出，这个空间任务需要工作记忆和抑制控制的认知技能，每一项都与额叶功能相关。在基线期和任务期记录了54名8个月大婴儿的脑电图（EEG）。只有在注视任务中表现出色的婴儿，从基线期到任务期，6至9赫兹的脑电功率才会增加。这些与任务相关的变化在额叶和后头皮位置很明显。在注视任务中表现出色的婴儿，相对于表现较差的婴儿，在右半球额叶位置的脑电图相干值较低。这些较低的相干值在基线期和任务期都很明显。与基线值相比，所有婴儿在空间工作记忆任务期间额叶-顶叶相干性都增加了。这些数据证实了之前认知神经科学的研究结果，即婴儿期额叶功能与认知表现水平相关。
