Tracking Multiple Items Through Occlusion: Clues to Visual Objecthood, Export

@article{citeulike:2478393, abstract = {In three experiments, subjects attempted to track multiple items as they moved independently and unpredictably about a display. Performance was not impaired when the items were briefly (but completely) occluded at various times during their motion, suggesting that occlusion is taken into account when computing enduring perceptual objecthood. Unimpaired performance required the presence of accretion and deletion cues along fixed contours at the occluding boundaries. Performance was impaired when items were present on the visual field at the same times and to the same degrees as in the occlusion conditions, but disappeared and reappeared in ways which did not implicate the presence of occluding surfaces (e.g., by imploding and exploding into and out of existence instead of accreting and deleting along a fixed contour). Unimpaired performance didnotrequire visible occluders (i.e., Michotte'stunnel effect) or globally consistent occluder positions. We discuss implications of these results for theories of objecthood in visual attention.}, author = {Scholl, Brian J. and Pylyshyn, Zenon W.}, citeulike-article-id = {2478393}, citeulike-linkout-0 = {http://dx.doi.org/10.1006/cogp.1998.0698}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0010-0285(98)90698-3}, citeulike-linkout-2 = {http://www.sciencedirect.com/science/article/B6WCR-45GWC44-J/2/eb8fdc7ecbc71cacdeeccc0393af2654}, doi = {10.1006/cogp.1998.0698}, journal = {Cognitive Psychology}, keywords = {cognition, finst, mot, multiple\_object\_tracking, occlusion, vision, visual\_attention, visual\_cognition, visual\_index\_theory}, month = {March}, number = {2}, pages = {259--290}, posted-at = {2008-12-23 05:13:33}, priority = {2}, title = {Tracking Multiple Items Through Occlusion: Clues to Visual Objecthood,}, url = {http://dx.doi.org/10.1006/cogp.1998.0698}, volume = {38}, year = {1999} }

TY - JOUR ID - citeulike:2478393 L3 - citeulike-article-id:2478393 N2 - In three experiments, subjects attempted to track multiple items as they moved independently and unpredictably about a display. Performance was not impaired when the items were briefly (but completely) occluded at various times during their motion, suggesting that occlusion is taken into account when computing enduring perceptual objecthood. Unimpaired performance required the presence of accretion and deletion cues along fixed contours at the occluding boundaries. Performance was impaired when items were present on the visual field at the same times and to the same degrees as in the occlusion conditions, but disappeared and reappeared in ways which did not implicate the presence of occluding surfaces (e.g., by imploding and exploding into and out of existence instead of accreting and deleting along a fixed contour). Unimpaired performance didnotrequire visible occluders (i.e., Michotte'stunnel effect) or globally consistent occluder positions. We discuss implications of these results for theories of objecthood in visual attention. IS - 2 JF - Cognitive Psychology EP - 290 TI - Tracking Multiple Items Through Occlusion: Clues to Visual Objecthood, VL - 38 SP - 259 KW - cognition KW - finst KW - mot KW - multiple_object_tracking KW - occlusion KW - vision KW - visual_attention KW - visual_cognition KW - visual_index_theory AU - Scholl, Brian AU - Pylyshyn, Zenon PY - 1999/03// UR - http://dx.doi.org/10.1006/cogp.1998.0698 ER -