抄録
As previously reported, we analyzed traces of vergence eye movements while subjects watch three-dimensional (3D) and two dimensional (2D) movies, and found that 2D images without binocular disparity sometimes evoked convergence similar to those found in the 3D condition (The 83th PSJ meeting, 2006 March). In this study, we investigated how these movies with strong motion component affect not only visual system but also cardiovascular and cerebral blood flow systems. The movies were projected on an 80 inch-screen by two liquid crystalline projectors with/without polarized filters to provide binocular disparity, field-sequentially. To monitor the gaze of the subject we measured binocular eye movements and head movements with a binocular video oculography and a magnetic motion sensor. We also measured ECG, blood pressure (BP), respiration rate, and cerebral blood flows with NIRS in frontal and occipital areas. The motion vectors and the optic flows were estimated based on flame-by-flame analyses of images. The change in cerebral blood flow in occipital area tended to be similar to the change in the power of radial expanding optic flow and these changes also may be related to ECG and BP variations. We analyzed the interactions among these physiological data with an integrative model. It may clearly evaluate the biological effects of movies with strong motion factors. [J Physiol Sci. 2007;57 Suppl:S69]
