INFANT INTERMANUAL COORDINATION AND HAPTIC PERCEPTION

提出了两个实验，描述了手间协调， 在婴儿时期触觉经验的手间转移， 胼胝体首先开始显示出 功能 每一项建议的程序都证明是有效的 胼胝体功能的指标在动物研究中， 胼胝体切除的患者，但以前没有被用于 研究婴儿的感觉运动能力。 实验1提供了一个 描述参与的组织的空间和时间模式 双手的动作协调， 双手接触7-15个月大的婴儿。 审查《公约》 干扰一只手的动作（通过意外和预期的变化， 载荷和轨迹）的协调模式，意味着一个程序， 通常用于成人运动控制组织的研究， 应用于婴儿运动控制的研究。 采用等效 程序将有助于建立婴儿运动控制理论 和成年人。 人工间协调是大多数 婴儿发展理论 然而，研究通常集中在 描述这种模式的发生，而不是具体的 它是如何组织的。 实验2采用简单的学习 程序（采用新颖但自发的行为反应）， 检查婴儿辨别物体属性的能力， 触觉感知 实验将确定刺激的影响 属性（形式，纹理，温度）和手（右或左）用于 感知刺激对婴儿学习触觉的能力 歧视，并将这种学习转移到使用其他 （未经训练的）手。 这一程序开启了系统的可能性， 检查触觉感知的信息处理方面， 允许直接的心理检查的过程， 大脑半球间的交流 这两个实验都是对婴儿感觉运动能力的研究 从神经心理学的角度来看。在每种情况下， 性别、年龄和利手状态被用作预测变量， 他们已经知道，有助于重要的个体差异， 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.