skip to main content

Interaction envelope: Local spatial representations of objects at all scales in scene-selective regions.(Report)

Bainbridge, Wilma Alice ; Oliva, Aude

Neuroimage, Nov 15, 2015, Vol.122, p.408 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por
  • Título:
    Interaction envelope: Local spatial representations of objects at all scales in scene-selective regions.(Report)
  • Autor: Bainbridge, Wilma Alice ; Oliva, Aude
  • Assuntos: Computer Science
  • É parte de: Neuroimage, Nov 15, 2015, Vol.122, p.408
  • Descrição: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1016/j.neuroimage.2015.07.066 Byline: Wilma Alice Bainbridge [wilma@mit.edu] (a,*), Aude Oliva [oliva@mit.edu] (b) Keywords Interaction envelope; Scene-selective regions; Parahippocampal place area; Spatial object properties; fMRI Highlights * We parameterize a spatial property of objects: "interaction envelope". * We run two fMRI studies orthogonalizing object interaction envelope and size. * We find scene-selective region sensitivity to object spatial properties. * Sensitivity remains regardless of object size, task, and other object properties. * Support for spatial processing in PPA and OPA for objects at all scales. Abstract While several cortical regions have been highlighted for their category selectivity (e.g., scene-selective regions like the parahippocampal place area, object selective regions like the lateral occipital complex), a growing trend in cognitive neuroscience has been to investigate what particular perceptual properties these regions calculate. Classical scene-selective regions have been particularly targeted in recent work as being sensitive to object size or other related properties. Here we test to which extent these regions are sensitive to spatial information of stimuli at any size. We introduce the spatial object property of "interaction envelope," defined as the space through which a user transverses to interact with an object. In two functional magnetic resonance imaging experiments, we examined activity in a comprehensive set of perceptual regions of interest for when human participants viewed object images varying along the dimensions of interaction envelope and physical size. Importantly, we controlled for confounding perceptual and semantic object properties. We find that scene-selective regions are in fact sensitive to object interaction envelope for small, manipulable objects regardless of real-world size and task. Meanwhile, small-scale entity regions maintain selectivity to stimulus physical size. These results indicate that regions traditionally associated with scene processing may not be solely sensitive to larger object and scene information, but instead are calculating local spatial information of objects and scenes of all sizes. Author Affiliation: (a) Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA (b) Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA * Corresponding author at: MIT 32-D430, 32 Vassar St, Cambridge, MA 02139, USA. Article History: Received 28 April 2015; Accepted 25 July 2015
  • Idioma: Inglês

Buscando em bases de dados remotas. Favor aguardar.