Mechanisms of information integration between dorsal and ventral visual systems in human

人类背腹视觉系统信息整合机制

• 批准号: 11309007
• 负责人: INUI Toshio
• 金额: $ 23.61万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11309007/
• 关键词: dorsal pathway; ventral pathway; information integration; shape information; spatial information; visual working memory; visual motion; category; 運動視差

Inui and Konishis' report: We measured the activity of the brain during using chopsticks, observing, imaging the use of them, and performing the use of them by pantomime. As a result, we found that inferior parietal lobe, which is assumed to operate the memory representation of actions, is related to these performances. It also appeared during executing these actions, right PMv is related to the precise adjustment of the movement. On the other hand, we examined the kinds of visual information which plays an important role in the motor control of grasping movement. As a result, we found that visual information between 150ms and 350ms after the movement onset is important especially for the motor control in which the movement duration is fixed at around 1,100ms. Our results emphasized the relevance of the time to record the maximum speed, approximately 350ms after the start of movement.Saiki's report: We conducted the experiments of MOPT tasks using objects that are defined with colors a … More nd shapes. Our results show that three to four combinations of colors and shapes cannot be retained at the sue time. It was revealed that three to four object representations, each of which is processed and integrated through the dorsal and ventral pathways, are not retained in the brain at a given time. Rather, we found that we can retain only the limited numbers of object representations, repeatedly and dynamically constructing and deconstructing them through the feature integration process by the selective attention.Sugio's report: We investigated the effects of local features and familiarity of everyday objects on hand shaping control of grasping by the event-related fMRI studies. Our results indicated that hand shapes of grasping the object with handle parts depended on the motor scheme activated by both semantic knowledge and local graspable features.Hayashi's report: We measured the latency of the saccadic eye movement when the position of the target object unexpectedly changed during reaching and grasping movement. The average latency over six subjects were 258±35ms in actually reaching and grasping, and 323±40ms in only fixating. This meant that the latency became short due to the execution of reaching and grasping. Suggested that the degree of the focus of visual attention would be positively correlated with the saccadic latency, this could predict that attention may be easily disengaged in early period of reaching and grasping control. Less

Inui和Konishis的报告：我们测量了使用筷子、观察、想象使用筷子以及通过哑剧表演使用筷子过程中的大脑活动。结果发现，被认为是操作动作记忆表征的大脑顶叶下叶与这些操作有关。在执行这些动作的过程中，右PMv也与动作的精确调整有关。另一方面，我们研究了在抓取运动的运动控制中起重要作用的视觉信息的种类。结果，我们发现，在运动开始后150 ms和350 ms之间的视觉信息是重要的，特别是对于运动持续时间固定在1,100 ms左右的运动控制。我们的研究结果强调了记录最大速度的时间的相关性，大约在运动开始后350 ms。Saiki的报告：我们进行了MOPT任务的实验，使用颜色和颜色定义的对象， ...更多信息 和形状。我们的研究结果表明，三到四个颜色和形状的组合不能在苏时间保留。研究表明，三到四个物体表征，每一个都是通过背侧和腹侧通路处理和整合的，在给定的时间内不会保留在大脑中。相反，我们发现，我们只能保留有限数量的对象表示，重复和动态地构建和解构他们通过功能整合过程中的选择性attention.Sugio的报告：我们调查的影响，当地的特点和熟悉的日常物体的手形控制的抓事件相关的功能磁共振成像研究。我们的研究结果表明，手的形状掌握的对象与处理部分依赖于电机方案激活的语义知识和本地graspable features.Hayashi的报告：我们测量了眼跳眼运动的潜伏期时，目标对象的位置意外改变，在达到和把握运动。6名受试者的平均潜伏期为258± 35 ms，实际到达和抓握，323± 40 ms。这意味着，由于执行伸手和抓握，延迟变得很短。提示视觉注意的集中程度与眼跳潜伏期呈正相关，这可能预示着在伸手和抓握控制的早期注意容易脱离。少

项目成果

Sasaoka, T., and Inui, T.: "Representation of 3D stick objects"Cognitive Studies. 7. 121-130 (2000)

Sasaoka, T. 和 Inui, T.：“3D 棒状物体的表示”认知研究。

Tanaka, S., Inui, T., Iwaki, S., Konishi, J., and Nakai, T.: "Neural substrates involved in imitating finger configurations: An fMRI study"NeuroReport. 12. 1171-1174 (2001)

Tanaka, S.、Inui, T.、Iwaki, S.、Konishi, J. 和 Nakai, T.：“参与模仿手指配置的神经基质：功能磁共振成像研究”NeuroReport。

Saikij J.: "Episodic representations of multiple objects in a predictable dynamic situation"Proceedings of the 3rd International Conference on CognitiveScience, August, Beijing, China. 260-264 (2001)

Saikij J.：“可预测动态情境中多个对象的情景表征”，第三届国际认知科学会议论文集，8 月，中国北京。

Saiki, J.: "Three smoothly moving object files cannot survive a 120 ms occlusion"Investigative Ophthalmology & Visual Science. 41・4. S796 (2000)

Saiki, J.：“三个平滑移动的对象文件无法在 120 毫秒的遮挡中幸存”《调查眼科与视觉科学》41·4 (2000)。

Tanaka, S., Inui, T., Iwaki, S., Konishi, J, Nakai, T.: "Neural substrates involved in imitating finger configurations : An fMRI study"NeuroReport. 12. 1171-1174 (2001)

Tanaka, S.、Inui, T.、Iwaki, S.、Konishi, J、Nakai, T.：“参与模仿手指配置的神经基质：功能磁共振成像研究”NeuroReport。