SPATIAL AND NONSPATIAL FACTORS IN SELECTION FOR ACTION

选择行动时的空间和非空间因素

• 批准号: 2873222
• 负责人: LAUREL J BUXBAUM
• 金额: $ 11.16万
• 依托单位: MOSS REHABILITATION HOSPITAL
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2873222
• 关键词: apraxias; ataxia; attention; behavioral /social science research tag; clinical research; human subject; neural information processing; proprioception /kinesthesia; psychomotor function; space perception; visual perception

DESCRIPTION: (Adapted From The Investigator's Abstract): An extensive literature suggests that speed and accuracy of detection of a target object in an array of other objects (distractors) is a function of the locations of target and distractor objects and the visual and semantic characteristics of these objects. Recent evidence for control subjects and patients with frontal and parietal lesions suggests that response factors (such as whether the task requires a button press or target-touch response) may also critically influence performance on such tasks. On the basis of such data, as well as findings from physiological studies, we have developed a provisional model of the role of distinct fronto-parietal processing modules in location coding and "selection for action". This model predicts differing roles for spatial, object, and response factors in selection as a function of the integrity of each of the proposed processing modules. A major goal of this research program is to test whether the predictions of the model are borne out in the performance of patients with perceptual neglect, directional hypokinesic neglect, and optic ataxia, whose lesions are hypothesized to affect different modules. The proposed experimental program will center upon selective reaching tasks, and will culminate in a series of studies of real-object detection and prehension designed to have greater relevance to naturalistic action than do most traditional laboratory studies of visual attention. In addition to contributing to the understanding of normal and disordered percept-motor processing, data from these studies are expected to provide evidence bearing on the real-life action performance of patients with such disorders, and thus, to have clinical implications for assessment and treatment.

描述：（根据调查员的摘要改编）：广泛 文献表明，检测目标对象的速度和准确性 在其他对象（干扰器）中， 目标和干扰物对象以及视觉和语义特征 这些对象。 对照对象和患者的最新证据 额叶和顶叶病变表明反应因素（例如 任务需要按钮或目标触摸响应）也可能 严重影响对此类任务的绩效。 根据这样的数据 除了生理研究的发现，我们还开发了 独特的额叶加工模块的作用的临时模型 在位置编码和“行动选择”中。 该模型预测 空间，对象和响应因素在选择中的角色不同 每个提出的处理模块完整性的功能。 一个 该研究计划的主要目标是测试是否预测 该模型在感知患者的表现中存在 忽视，定向性低发性忽视和视神经障碍，其病变 假设影响不同的模块。 提出的实验 程序将以选择性达到任务为中心，并将 一系列研究的研究和预性研究 与大多数传统实验室相比，与自然主义行动的相关性更大 视觉注意力的研究。 除了为 了解正常和无序的感知运动处理，来自 这些研究有望提供有关现实生活的证据 患有这种疾病的患者的行动表现，因此 评估和治疗的临床意义。