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

人类视觉系统主动探索环境以获取与强加的视觉任务(主动视觉)相关的信息，而不是被动地接受视觉输入。本研究旨在研制用于主动视觉研究的实验仪器和分析工具。我们开发了这个系统，可以同时测量和分析眼球运动、知觉和认知判断以及大脑活动。为了揭示视觉开发的机制，我们研制了眼动分析和fMRI的实验仪器和工具，以及MEG三维物体的刺激呈现计算机系统。深度信息为视觉开发提供了重要线索。3)计算机系统用于记录知觉和认知判断的结果；为了研究视觉任务对知觉加工的影响，我们开发了与视觉任务和视觉刺激相关的大脑活动分析系统，为研究主动视觉过程中脑激活的动态特性提供了新的技术手段。

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.