Visual Cues for the Retrieval of Landmark Memories by Navigating Wood Ants

摘要: Summary Background Even on short routes, ants can be guided by multiple visual memories. We investigate here the cues controlling memory retrieval as wood approach a one- or two-edged landmark to collect sucrose at point along its base. In such tasks, store desired retinal position of edges several points their route. They guide subsequent trips retrieving appropriate and moving bring in scene toward stored positions. Results The apparent width turns out powerful cue for edge. Two other potential cues, landmark's height distance that ant walks, have little effect retrieval. A simple model encapsulates these conclusions reproduces ants' routes conditions. According this model, stores look-up table. Each entry contains vertical edges. currently perceived provides an index associated edge accounts population behavior idiosyncratic training individual ants. Discussion Our results imply binding between shape and, further, assessing does not depend presence any particular local feature, This property makes ant's guidance system relatively robust occlusions.