Fruit flies increase attention to their frontal visual field during fast forward optic flow
Fruit flies increase attention to their frontal visual field during fast forward optic flow
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DOI：
10.1098/rsbl.2018.0767
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发表时间：
2019-01-01
期刊：
影响因子：
3.3
通讯作者：
Theobald, Jamie
中科院分区：
文献类型：
--
作者：
Palermo, Nicholas;Theobald, Jamie
果蝇必须补偿它们眼睛的小侧面收集的有限光线，而飞行过程中的图像运动进一步降低了光捕获。运动模糊在垂直于向前运动的快速视野区域尤其成问题，但流场也包含较慢的区域，受模糊影响较小。为了测试果蝇是否会将注意力转移到流场中可预测的较慢的区域，我们将果蝇放在一个模拟向前飞行的舞台上，并测量果蝇对不同视觉区域的转弯信号的反应。我们发现，在快速前进的飞行过程中，果蝇对正面的转弯信号反应更强烈，而对侧面的转弯信号反应更弱，这支持了飞行中的果蝇将视觉注意力转移到受运动模糊影响较小的慢速运动区域的假设。
Fruit flies must compensate for the limited light gathered by the tiny facets of their eyes, and image motion during flight lowers light catch even further. Motion blur is especially problematic in fast regions of the visual field, perpendicular to forward motion, but flow fields also contain slower regions, less affected by blur. To test whether fruit flies shift their attention to predictably slower regions of a flow field, we placed flies in an arena simulating forward flight and measured responses to turning cues in different visual areas. We find that during fast forward flight, fruit flies respond more strongly to turning cues presented directly in front, and less strongly to cues presented to the sides, supporting the hypothesis that flying fruit flies shift visual attention to slower moving regions less affected by motion blur.