Colour, face, and visuospatial imagery abilities in low-vision individuals with visual field deficits

Paolo Bartolomeo, David Dulin, Céline Cavezian, Coline Serrière, Anne-Catherine Bachoud-Levi, Sylvie Chokron

Risultato della ricerca: Contributo in rivistaArticolo in rivista

9 Citazioni (Scopus)

Abstract

This study investigates to what extent visual perception integrity is necessary for visual mental imagery. Sixteen low-vision participants with severe peripheral visual field loss, 16 with severe central field loss, 6 left brain-damaged patients with right homonymous hemianopia, 6 right brain-damaged patients with left homonymous hemianopia, and 16 normally sighted controls performed perceptual and imagery tasks using colours, faces, and spatial relationships. Results showed that (a) the perceptual and mental image>ry disorders vary according to the type of visual field loss, (b) hemianopics had no more difficulties imagining spatial stimuli in their contralesional hemispace than in their ipsilesional one, and (c) the only hemianopic participant to have perceptual and mental imagery impairments suffered from attentional deficits. Results suggest that (a) visual memory is not definitively established, but rather needs perceptual practice to be maintained, and (b) that visual mental imagery may involve some of the attentional-exploratory mechanisms that are employed in visual behaviour.
Lingua originaleEnglish
pagine (da-a)1955-1970
Numero di pagine16
RivistaTHE QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY
Volume64
DOI
Stato di pubblicazionePubblicato - 2011
Pubblicato esternamente

Keywords

  • Adult
  • Brain
  • Case-Control Studies
  • Color
  • Face
  • Female
  • Hemianopsia
  • Humans
  • Imagination
  • Judgment
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • Neuroimaging
  • Retinitis Pigmentosa
  • Vision, Low
  • Visual Fields
  • Visual Perception

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