title: Dynamics of feature binding during object-selective attention.
abstract: Objects in the environment may be attended selectively and perceived as unified ensembles of their constituent features. To investigate the timing and cortical localization of feature-integration mechanisms in object-based attention, recordings of event-related potentials and magnetic fields were combined with functional MRI while subjects attended to one of two superimposed transparent surfaces formed by arrays of dots moving in opposite directions. A spatiotemporal analysis revealed evidence for a rapid increase in neural activity localized to a color-selective region of the fusiform gyrus when the surface moving in the attended direction displayed an irrelevant color feature. These data provide support for the "integrated-competition" model of object-selective attention and point to a dynamic neural substrate for the rapid binding process that links relevant and irrelevant features to form a unified perceptual object.
authors.affiliation: Department of Neurology II, Otto von Guericke University, 31920 Magdeburg, Germany.
authors.forename: M A
authors.initials: MA
authors.lastname: Schoenfeld
authors.forename: C
authors.initials: C
authors.lastname: Tempelmann
authors.forename: A
authors.initials: A
authors.lastname: Martinez
authors.forename: J-M
authors.initials: JM
authors.lastname: Hopf
authors.forename: C
authors.initials: C
authors.lastname: Sattler
authors.forename: H-J
authors.initials: HJ
authors.lastname: Heinze
authors.forename: S A
authors.initials: SA
authors.lastname: Hillyard
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D005071:Evoked Potentials; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D014796:Visual Perception / Q000502:physiology*