... ). What is the significance of this strategy for spatial vision, in the context of flight through cluttered environments? Comparison between the yaw orientation of the head and the flight paths indicates that bees navigating between obstacles appeared to maintain close alignment between their gaze...

...Alec B. Luro; Esteban Fernández-Juricic; Patrice Baumhardt; Mark E. Hauber ABSTRACT Color and spatial vision is critical for recognition and discrimination tasks affecting fitness, including finding food and mates, and recognizing offspring. For example, as a counter defense to avoid the cost...

... straight walking phases, the retinal image flow is composed of both translational and rotational optic flow, which might affect spatial vision, as well as fixation behavior. We addressed this issue for an orientation task where walking blowflies approached a black vertical bar. The visual stimulus...

... spatial vision. We analyzed the movements of 39 specimens of S. purpuratus after they were placed in the center of a featureless tank containing a round, black target that had an angular diameter of 6.5 deg. or 10 deg. (solid angles of 0.01 sr and 0.024 sr, respectively). An average orientation vector...

... to discriminate similar complex natural scenes that could be used as `landmarks' even in a dense forest type scenario where there are no salient references. For spatial vision discrimination tasks, differential conditioning promotes bees to learn the entire visual pattern, whereas absolute conditioning...

..., even when the eyes have yet to develop foveal specialization, mantids are capable of this visually controlled behaviour. * Author for correspondence. 07 06 1995 © The Company of Biologists Limited 1995 insect praying mantis spatial vision distance estimation image...