Mimura K
Exp Biol. 1987;46(3):155-62.
Visual pattern discrimination in the fly (Boettcherisca peregrina) is dependent on post-emergence experience of light and visual patterns (Mimura 1986). A behavioural study was made on the persistence of the functional modification that results from visual deprivation. When the fly was kept in the dark for 5 days post-emergence, the development of visual pattern discrimination was impaired completely, irrespective of the subsequent light condition, while photosensitivity was not impaired. A "deprivation" effect could also be produced by exposing the fly for at least 1 h soon after emergence to a definite pattern instead of its usual contrasted environment. Persistence of this deprivation effect depended on the subsequent light conditions: The effect was more persistent when the flies were kept in continuous darkness (DD) than when they were raised in light-dark (LD) environment; and The longer the presentation of a definite pattern, the more stable was the deprivation effect. Extinction of the deprivation effect was replaced with the development of normal pattern discrimination. In flies that had experienced a lighted, white, unpatterned environment after emergence, the normal development of pattern discrimination was impaired. This deprivation effect was persistently maintained when flies were kept in DD, but when flies were exposed to this environment for 5 h or more and then kept in LD, normal pattern discrimination developed gradually.
苍蝇（棕尾别麻蝇）的视觉模式辨别取决于羽化后的光和视觉模式体验（三村，1986年）。针对视觉剥夺导致的功能改变的持续性进行了一项行为学研究。当苍蝇在羽化后置于黑暗环境中5天时，无论随后的光照条件如何，视觉模式辨别的发育都会完全受损，而光敏感性不受影响。在羽化后不久将苍蝇暴露于特定模式而非其通常的对比环境中至少1小时，也会产生“剥夺”效应。这种剥夺效应的持续性取决于随后的光照条件：与在明暗交替（LD）环境中饲养的苍蝇相比，在持续黑暗（DD）环境中饲养的苍蝇的这种效应更持久；并且特定模式呈现的时间越长，剥夺效应就越稳定。剥夺效应的消退被正常模式辨别的发育所取代。在羽化后经历过明亮、白色、无图案环境的苍蝇中，模式辨别的正常发育受到损害。当苍蝇饲养在DD环境中时，这种剥夺效应会持续保持，但当苍蝇暴露于该环境5小时或更长时间然后饲养在LD环境中时，正常的模式辨别会逐渐发育。
