INFANT INTERMANUAL COORDINATION AND HAPTIC PERCEPTION

提出了两个实验，描述了人工间协调和 触觉经验在婴儿期的交互传递 胼胝体首先开始显示出电生理证据 功能。事实证明，拟议的每一种程序都是有效的 在动物研究和骨髓瘤研究中的骨痂功能指标 做过膝盖骨切除手术的患者，但这两人以前都没有受雇于 调查婴儿感觉运动能力。实验1提供了一个 所涉组织的空间和时间模式说明 在运动过程中两只手的动作相互协调 7-15个月婴儿的双指甲。对影响的审查 扰乱一只手的动作(因意外和预期的变化) 载荷和弹道)上的图案协调，意味着一个程序 常用于成人运动控制组织的研究 可应用于婴幼儿运动控制的研究。使用等效项 手术将有助于建立婴儿运动控制理论之间的联系 和成年人。手动协调是MOST的一个重要方面 关于婴儿发育的理论。然而，研究通常集中在 描述这种模式的发生，而不是对特定的 它是如何组织的。实验2使用简单的学习方法 程序(使用一种新颖但自发的行为反应) 检查婴儿辨别物体特性的能力 触觉感知。这项实验将确定刺激的效果 属性(形状、纹理、温度)和手(右或左)用于 感知对婴儿学习触觉的能力的刺激 歧视，并将这种学习转移到使用另一种 (未经训练的)手。这个程序开启了系统化的可能性 对触觉和触觉信息处理的考察 允许对以下过程进行直接心理检查 大脑半球间的交流。 这两个实验都接近于对婴儿感觉运动能力的调查 从神经心理学的角度来看。在每个函数中，的主题变量 性别、年龄和惯用手状态被用作预测变量，因为 众所周知，它们对人类社会中重要的个体差异有贡献。 大脑半球功能特化的神经心理学研究 和大脑半球间的相互作用。

Two experiments are proposed which describe intermanual coordination and intermanual transfer of haptic experience during the period of infancy when the corpus callosum first begins to show electrophysiological evidence of function. Each of the proposed procedures have proven to be effective indicators of callosal functioning in animal studies and in studies of callosectomized patients but neither has been employed previously for investigating infant sensorimotor ability. Experiment 1 provides a description of the spatial and temporal pattern of organization involved in intermanual coordination of the movements of the two hands during the bimanual reaching of 7-15 month old infants. Examination of the effects of perturbing the actions of one hand (by unexpected and expected changes in load and trajectory) on the pattern of coordination, means that a procedure commonly used in study of the organization of motor control in adults will be applied to the study of infant motor control. Using equivalent procedures will help forge links between theory of motor control in infants and adults. Intermanual coordination is an important aspect of most theories of infant development. However, research has typically focused on describing the occurrence of this pattern rather than on the specific aspects of how it is organized. Experiment 2 uses a simple learning procedure (employing a novel but spontaneous behavioral response) to examine the ability of infants to discriminate the properties of objects by haptic perception. The experiment will identify the effects of stimulus properties (form, texture, temperature) and hand (right or left) used to perceive the stimuli on the infant's ability to learn a haptic discrimination and to transfer this learning to the use of the other (untrained) hand. This procedure opens the possibility of systematic examination of the information processing aspects of haptic perception and allows for direct psychological examination of the processes of interhemispheric communication. Both experiments approach the investigation of infant sensorimotor ability from a neuropsychological perspective. In each, the subject variables of sex, age, and handedness status are used as prediction variables because they have been known to contribute to important individual differences in neuropsychological investigations of hemispheric specialization of function and interhemispheric interaction.