TY - JOUR
T1 - Automatic frame-centered object representation and integration revealed by iconic memory, visual priming, and backward masking
AU - Lin, Zhicheng
AU - He, Sheng
PY - 2012
Y1 - 2012
N2 - Object identities ("what") and their spatial locations ("where") are processed in distinct pathways in the visual system, raising the question of how the what and where information is integrated. Because of object motions and eye movements, the retina-based representations are unstable, necessitating nonretinotopic representation and integration. A potential mechanism is to code and update objects according to their reference frames (i.e., frame-centered representation and integration). To isolate frame-centered processes, in a frame-to-frame apparent motion configuration, we (a) presented two preceding or trailing objects on the same frame, equidistant from the target on the other frame, to control for object-based (frame-based) effect and space-based effect, and (b) manipulated the target's relative location within its frame to probe frame-centered effect. We show that iconic memory, visual priming, and backward masking depend on objects' relative frame locations, orthogonal of the retinotopic coordinate. These findings not only reveal that iconic memory, visual priming, and backward masking can be nonretinotopic but also demonstrate that these processes are automatically constrained by contextual frames through a frame-centered mechanism. Thus, object representation is robustly and automatically coupled to its reference frame and continuously being updated through a frame-centered, location-specific mechanism. These findings lead to an object cabinet framework, in which objects ("files") within the reference frame ("cabinet") are orderly coded relative to the frame.
AB - Object identities ("what") and their spatial locations ("where") are processed in distinct pathways in the visual system, raising the question of how the what and where information is integrated. Because of object motions and eye movements, the retina-based representations are unstable, necessitating nonretinotopic representation and integration. A potential mechanism is to code and update objects according to their reference frames (i.e., frame-centered representation and integration). To isolate frame-centered processes, in a frame-to-frame apparent motion configuration, we (a) presented two preceding or trailing objects on the same frame, equidistant from the target on the other frame, to control for object-based (frame-based) effect and space-based effect, and (b) manipulated the target's relative location within its frame to probe frame-centered effect. We show that iconic memory, visual priming, and backward masking depend on objects' relative frame locations, orthogonal of the retinotopic coordinate. These findings not only reveal that iconic memory, visual priming, and backward masking can be nonretinotopic but also demonstrate that these processes are automatically constrained by contextual frames through a frame-centered mechanism. Thus, object representation is robustly and automatically coupled to its reference frame and continuously being updated through a frame-centered, location-specific mechanism. These findings lead to an object cabinet framework, in which objects ("files") within the reference frame ("cabinet") are orderly coded relative to the frame.
KW - Frametopic representation
KW - Iconic memory
KW - Masking
KW - Nonretinotopic processing
KW - Object/frame-based processing
KW - Object/frame-centered processing
KW - Perceptual continuity
KW - Priming
KW - Retinotopic representation
KW - Spatiotopic representation
UR - http://www.scopus.com/inward/record.url?scp=84870284659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870284659&partnerID=8YFLogxK
U2 - 10.1167/12.11.24
DO - 10.1167/12.11.24
M3 - Article
C2 - 23104817
AN - SCOPUS:84870284659
SN - 1534-7362
VL - 12
JO - Journal of vision
JF - Journal of vision
IS - 11
M1 - 24
ER -