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dc.contributor.authorElder, David M.en_US
dc.contributor.authorGrossberg, Stephenen_US
dc.contributor.authorMinogolla, Ennioen_US
dc.date.accessioned2011-11-14T18:17:10Z
dc.date.available2011-11-14T18:17:10Z
dc.date.issued2009-04en_US
dc.identifier.urihttps://hdl.handle.net/2144/1969
dc.description.abstractA neural model is developed to explain how humans can approach a goal object on foot while steering around obstacles to avoid collisions in a cluttered environment. The model uses optic flow from a 3D virtual reality environment to determine the position of objects based on motion discontinuities, and computes heading direction, or the direction of self-motion, from global optic flow. The cortical representation of heading interacts with the representations of a goal and obstacles such that the goal acts as an attractor of heading, while obstacles act as repellers. In addition the model maintains fixation on the goal object by generating smooth pursuit eye movements. Eye rotations can distort the optic flow field, complicating heading perception, and the model uses extraretinal signals to correct for this distortion and accurately represent heading. The model explains how motion processing mechanisms in cortical areas MT, MST, and posterior parietal cortex can be used to guide steering. The model quantitatively simulates human psychophysical data about visually-guided steering, obstacle avoidance, and route selection.en_US
dc.description.sponsorshipAir Force Office of Scientific Research (F4960-01-1-0397); National Geospatial-Intelligence Agency (NMA201-01-1-2016); National Science Foundation (SBE-0354378); Office of Naval Research (N00014-01-1-0624)en_US
dc.language.isoen_USen_US
dc.publisherBoston University Center for Adaptive Systems and Department of Cognitive and Neural Systemsen_US
dc.relation.ispartofseriesBU CAS/CNS Technical Reports;CAS/CNS-TR-2009-005en_US
dc.rightsCopyright 2009 Boston University. Permission to copy without fee all or part of this material is granted provided that: 1. The copies are not made or distributed for direct commercial advantage; 2. the report title, author, document number, and release date appear, and notice is given that copying is by permission of BOSTON UNIVERSITY TRUSTEES. To copy otherwise, or to republish, requires a fee and / or special permission.en_US
dc.subjectHeading perceptionen_US
dc.subjectSteeringen_US
dc.subjectOptic flowen_US
dc.subjectObstacleen_US
dc.subjectGoalen_US
dc.subjectPursuit eye movementen_US
dc.subjectGain fieldsen_US
dc.subjectPeak shiften_US
dc.subjectV2en_US
dc.subjectMTen_US
dc.subjectMSTen_US
dc.subjectPPCen_US
dc.subjectLIPen_US
dc.titleA Neural Model of Visually Guided Steering, Obstacle Avoidance, and Route Selectionen_US
dc.typeTechnical Reporten_US
dc.rights.holderBoston University Trusteesen_US


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