Dynamics of feature binding during object-selective attention

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.

[1]  R. Desimone,et al.  Competitive Mechanisms Subserve Attention in Macaque Areas V2 and V4 , 1999, The Journal of Neuroscience.

[2]  F. Karayanidis,et al.  Evidence of visual processing negativity with attention to orientation and color in central space. , 1997, Electroencephalography and clinical neurophysiology.

[3]  J. Kenemans,et al.  Split-Second Sequential Selective Activation in Human Secondary Visual Cortex , 2002, Journal of Cognitive Neuroscience.

[4]  A F Kramer,et al.  Object-based attentional selection--grouped arrays or spatially invariant representations?: comment on vecera and Farah (1994). , 1997, Journal of experimental psychology. General.

[5]  Dominique Lamy,et al.  Object-based selection: The role of attentional shifts , 2002, Perception & psychophysics.

[6]  S. Hillyard,et al.  Selective attention to the color and direction of moving stimuli: Electrophysiological correlates of hierarchical feature selection , 1996, Perception & psychophysics.

[7]  G H Recanzone,et al.  Effects of attention on MT and MST neuronal activity during pursuit initiation. , 2000, Journal of neurophysiology.

[8]  H Koizumi,et al.  Functional mapping of the human colour centre with echo-planar magnetic resonance imaging , 1995, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[9]  K Nakayama,et al.  Visual attention to surfaces in three-dimensional space. , 1995, Proceedings of the National Academy of Sciences of the United States of America.

[10]  J. Reynolds,et al.  Exogenously cued attention triggers competitive selection of surfaces , 2003, Vision Research.

[11]  M. Paradiso,et al.  Feature-specific effects of selective visual attention , 1995, Vision Research.

[12]  M Wagner,et al.  Improving source reconstructions by combining bioelectric and biomagnetic data. , 1998, Electroencephalography and clinical neurophysiology.

[13]  G. R. Mangun,et al.  Form-From-Motion: MEG Evidence for Time Course and Processing Sequence , 2003, Journal of Cognitive Neuroscience.

[14]  Alexander B. Bilsky,et al.  Parallel processing of park-whole information in visual search tasks , 1994, Perception & psychophysics.

[15]  W. Singer.  Consciousness and the Binding Problem , 2001, Annals of the New York Academy of Sciences.

[16]  Leslie G. Ungerleider,et al.  Selective attention to face identity and color studied with f MRI , 1997, Human brain mapping.

[17]  R. Parasuraman.  The attentive brain , 1998 .

[18]  C Alain,et al.  Binding visual features during high-rate serial presentation. , 1999, Neuroreport.

[19]  P. Cavanagh,et al.  Retinotopy and color sensitivity in human visual cortical area V8 , 1998, Nature Neuroscience.

[20]  Erik Blaser,et al.  Tracking an object through feature space , 2000, Nature.

[21]  R. Desimone,et al.  Neural mechanisms of selective visual attention. , 1995, Annual review of neuroscience.

[22]  R A Abrams,et al.  Object-based visual attention with endogenous orienting , 2000, Perception & psychophysics.

[23]  Karl J. Friston,et al.  Combining Spatial Extent and Peak Intensity to Test for Activations in Functional Imaging , 1997, NeuroImage.

[24]  Nancy Kanwisher,et al.  fMRI evidence for objects as the units of attentional selection , 1999, Nature.

[25]  Valia Rodríguez,et al.  Dividing attention between form and motion during transparent surface perception. , 2002, Brain research. Cognitive brain research.

[26]  S. Zeki,et al.  The position and topography of the human colour centre as revealed by functional magnetic resonance imaging. , 1997, Brain : a journal of neurology.

[27]  J. Duncan,et al.  Competitive brain activity in visual attention , 1997, Current Opinion in Neurobiology.

[28]  R. Abrams,et al.  Object-based selection within and beyond the focus of spatial attention , 2002, Perception & psychophysics.

[29]  S. Luck,et al.  Spatio‐temporal dynamics of attention to color: Evidence from human electrophysiology , 1998, Human brain mapping.

[30]  M. Posner,et al.  Attention and the detection of signals. , 1980, Journal of experimental psychology.

[31]  A Treisman,et al.  Feature binding, attention and object perception. , 1998, Philosophical transactions of the Royal Society of London. Series B, Biological sciences.

[32]  H. Heinze,et al.  An event-related brain potential study of visual selective attention to conjunctions of color and shape. , 1999, Psychophysiology.

[33]  M. Corbetta,et al.  Selective and divided attention during visual discriminations of shape, color, and speed: functional anatomy by positron emission tomography , 1991, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[34]  R. Rafal,et al.  Shifting visual attention between objects and locations: evidence from normal and parietal lesion subjects. , 1994, Journal of experimental psychology. General.

[35]  J. Duncan.  Selective attention and the organization of visual information , 1984 .