INFANT COGNITIVE AND EEG DEVELOPMENT--BASIC PROCESSES

行为神经科学的最新进展使 大脑皮层发育区与大脑皮层发育关系的研究 新兴的行为技能。当前研究的目的是 以非侵入性的方式检查人的成熟度与 中枢神经系统的活动和表现对特定的认知和 影响引导性任务。中枢神经系统活动的测量 使用的是从头皮上记录下来的脑电活动( 脑电)。 48名婴儿将在一项纵向研究中接受跟踪。这项研究将 从婴儿六个月大开始，到十二岁结束 几个月大的孩子。婴儿将每月看一次。每月 评估，婴儿清醒时将记录8个通道的脑电 静静地坐着。在每个月的评估中，婴儿将被 提供一系列任务，旨在挖掘特定认知 并引发特定的情感反应。认知任务 将包括具有可变延迟的AE任务、对象检索和 乌兹吉里斯-亨特客体永久性与声音和手势量表 模仿。为激发情感而设计的任务包括展示 新奇的物品和面具，与母亲短暂的分离。一个 将收集横断面样本，以防止实践 并审查发展中的不连续现象。 不同频段的功率测量和测量 将计算不同电极对之间的相干性 从脑电数据中。利用现有的脑电模型，关系 频率成分和连贯性与幼儿任务绩效之间的关系 将会被检查。 这些数据将是第一批调查两者之间关系的数据之一 脑电活动与认知和情感任务的变化 在生命的第一年的表现。

Recent advances in behavioral neuroscience have permitted investigation of the relations between developing areas of neocortex and emerging behavioral skills. The purpose of the current research is to examine in a non-invasive manner the relations between the maturation of central nervous system activity and performance on specific cognitive and affect eliciting tasks. The measure of central nervous system activity to be used is brain electrical activity recorded off the scalp (the electroencephalogram). 48 infants will be followed in a longitudinal study. The study will begin when infants are six months of age and end when infants are twelve months of age. Infants will be seen once a month. At each monthly assessment, 8 channels of EEG will be recorded while the infant is awake and sitting quietly. At each monthly assessment the infant will be presented with a set of tasks designed to tap specific cognitive behaviors and to elicit certain affective responses. The cognitive tasks will include the AE task with varying delay, object retrieval, and the Uzgiris-Hunt Scales of Object Permanence and Vocal and Gestural Imitation. The tasks designed to elicit affect include presentation of novel objects and masks and brief separation from mother. A cross-sectional sample will be collected to guard against practice effects and to examine discontinuities in development. Measures of power in different frequency bands and measures of coherence between different pairs of electrode sites will be computed from the EEG data. Utilizing current models of the EEG, relations between frequency components and coherence and infant task performance will be examined. These data will be among the first to investigate relations between changes in brain electrical activity and cognitive and affective task performance during the first year of life.