| Summary: | When navigating by path integration, knowledge of ones position becomes
 increasingly uncertain as one walks from a known location. This
 uncertainty decreases if one perceives a known landmark location nearby.
 We hypothesized that remembering landmarks might serve a similar purpose
 for path integration as directly perceiving them. If this is true, walking near
 a remembered landmark location should enhance response consistency in
 path integration tasks. To test this, we asked participants to view a target
 and then attempt to walk to it without vision. Some participants saw the
 target plus a landmark during the preview. Compared with no-landmark
 trials, response consistency nearly doubled when participants passed near the
 remembered landmark location. Similar results were obtained when
 participants could audibly perceive the landmark while walking. A control
 experiment ruled out perceptual context effects during the preview. We
 conclude that remembered landmarks can enhance path integration even
 though they are not directly perceived.
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