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探索了小鼠在排除透视、遮挡等空间深度的线索下,是否是依靠视觉目标的尺寸大小来感知空间深度.小鼠放置于可以调节高度的高台上,高台位于仅底面有光线照明、四周黑暗的实验箱内.将由格子构成底部面板的尺寸设计为小鼠估计高度距离的唯一线索,设置了3个空间尺度的底板,分别按2/3的比例缩小,并设置7个高度.在同一高度下每测试一轮即对底板的尺寸进行随机变换.记录小鼠跳落前在高台上停留的时间,研究小鼠对高度的判断是否受到底板尺寸的影响.结果表明所有大小线索条件下小鼠在高台上停留的时间随高度的增加而延长.在20～30cm的高度范围,小鼠不以大小为线索的信息来判断深度,可能主要以双眼视差产生的深度信息来判断高度.而在小于20cm和大于30cm的高度范围,特别是在更高的距离上如50cm、60cm和70cm,小鼠以目标大小信息为线索来对深度进行判断,以弥补在这些条件下双眼深度信息的不足.在理论上说这是由于小鼠只有三分之一的(中央)视野为双眼视野区.实验的行为范式可以应用到以转基因鼠为模式生物的实验中,以研究此类行为与基因之间的关系.
Explore the mouse in the exclusion of perspective, occlusion and other space depth of the clue, whether it depends on the size of the visual target size to perceive the depth of space.Mouse placed in the height can be adjusted on the platform, the platform is located in the bottom only light lighting, surrounded by darkness Of the experimental box will be formed by the bottom panel to form the size of the mouse as the only clues to estimate the height of the distance, set up three spatial scale floor, respectively, by 2/3 scale down and set 7 height at the same height Under each test, the size of the bottom plate was randomly transformed, and the time for the mouse to stay on the high table before jumping was recorded to determine whether the height of the mouse was affected by the size of the bottom plate.The results showed that mice of all sizes and clues In the height of 20-30 cm, the mouse does not size information as a clue to determine the depth of information may be mainly based on binocular depth information to determine the height, while in less than 20cm and greater than 30cm height range, especially at higher distances such as 50cm, 60cm and 70cm, the mouse size of the target information as a clue to the depth of the sentence , In order to make up for the lack of information on the depth of the eyes under these conditions.In theory this is because only one-third of the mice (central) vision for the binocular vision area.Experimental behavioral paradigm can be applied to transgenic mice as model organisms In experiments to study the relationship between these behaviors and genes.