caa a22 4500 445353562 CHVBK 20180317142852.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00221-011-2696-x doi (NATIONALLICENCE)springer-10.1007/s00221-011-2696-x Keeping track of the distance from home by leaky integration along veering paths [Elektronische Daten] [Markus Lappe, Maren Stiels, Harald Frenz, Jack Loomis] When humans use vision to gauge the travel distance of an extended forward movement, they often underestimate the movement's extent. This underestimation can be explained by leaky path integration, an integration of the movement to obtain distance. Distance underestimation occurs because this integration is imperfect and contains a leak that increases with distance traveled. We asked human observers to estimate the distance from a starting location for visually simulated movements in a virtual environment. The movements occurred along curved paths that veered left and right around a central forward direction. In this case, the distance that has to be integrated (i.e., the beeline distance between origin and endpoint) and the distance that is traversed (the path length along the curve) are distinct. We then tested whether the leak accumulated with distance from the origin or with traversed distance along the curved path. Leaky integration along the path makes the seemingly counterintuitive prediction that the estimated origin-to-endpoint distance should decrease with increasing veering, because the length of the path over which the integration occurs increases, leading to a larger leak effect. The results matched the prediction: movements of identical origin-to-endpoint distance were judged as shorter when the path became longer. We conclude that leaky path integration from visual motion is performed along the traversed path even when a straight beeline distance is calculated. Springer-Verlag, 2011 Vision nationallicence Perception nationallicence Navigation nationallicence Path integration nationallicence Optic flow nationallicence Sensorimotor nationallicence Human nationallicence Lappe Markus Institute of Psychology, University of Muenster, 48149, Münster, Germany aut Stiels Maren Institute of Psychology, University of Muenster, 48149, Münster, Germany aut Frenz Harald Institute of Psychology, University of Muenster, 48149, Münster, Germany aut Loomis Jack Department of Psychology, University of California Santa Barbara, Santa Barbara, CA, USA aut Experimental Brain Research Springer-Verlag 212/1(2011-07-01), 81-89 0014-4819 212:1<81 2011 212 221 https://doi.org/10.1007/s00221-011-2696-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2696-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lappe Markus Institute of Psychology, University of Muenster, 48149, Münster, Germany aut NATIONALLICENCE 700 1- Stiels Maren Institute of Psychology, University of Muenster, 48149, Münster, Germany aut NATIONALLICENCE 700 1- Frenz Harald Institute of Psychology, University of Muenster, 48149, Münster, Germany aut NATIONALLICENCE 700 1- Loomis Jack Department of Psychology, University of California Santa Barbara, Santa Barbara, CA, USA aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/1(2011-07-01), 81-89 0014-4819 212:1<81 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer