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Development of experimental apparatus and tools of analysis for investigation of active vision.

开发用于研究主动视觉的实验装置和分析工具。

基本信息

批准号：
10551003
负责人：
EJIMA Yoshimichi
金额：
$ 8.26万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

Humanvisual system actively explores environment to obtain information relevant to imposed visual tasks(active vision), rather than it passively receives visual inputs. The present study aimed to develop the experimental apparatus and tools of analysis for investigation of active vision. We developed the system, which measures and analyzes eye movement, perceptual and cognitive judgment, and brain activities simultaneously. The followings are the terms we dealt with.1)Simultaneous measurement of brain activity and eye movement.In order to reveal the mechanisms responsible for visual exploitation, we developed the experimental apparatus and tools of analysis of eye movement and fMRI and MEG.2)Computer system for stimulus presentation of three dimensional objects.Depth information provides an important cue for visual exploitation. We developed the computer system which presented stereoscopic visual stimuli to subjects who were measured brain activities with fMRI or MEG.3)Computer system for recording the results of perceptual and cognitive judgments.In order to effects of visual tasks on perceptual processing, we developed the computer system which analyze the brain activities in relation to visual tasks and visual stimulation imposed on subjects.The experimental apparatus and tools of analysis may provide new technique to investigate the dynamic property of brain activation during active vision.

人类视觉系统不是被动地接受视觉输入，而是主动地探索环境，获取与视觉任务相关的信息（主动视觉）。本研究的目的是发展主动视觉研究的实验仪器和分析工具。我们开发了一个系统，它可以同时测量和分析眼球运动、感知和认知判断以及大脑活动。本研究的主要内容如下：1）脑活动和眼动的同步测量，为了揭示视觉开发的机制，我们研制了眼动分析、功能磁共振成像和脑磁图的实验装置和工具; 2）三维物体刺激呈现的计算机系统，深度信息是视觉开发的重要线索。我们研制了一个计算机系统，该系统向受试者呈现立体视觉刺激，用fMRI或MEG测量大脑活动。3）用于记录知觉和认知判断结果的计算机系统。为了研究视觉任务对知觉加工的影响，我们研制了一个计算机系统，用于分析与视觉任务和视觉刺激有关的大脑活动，这一分析为研究主动视觉过程中大脑活动的动态特性提供了新的技术手段。