Unilateral neglect restricted to visual imagery

  • Guariglia
  • Padovani A
  • Pantano P
 et al. 
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Disorders in perceiving and exploring the visual space contralateral to a brain lesion have been frequently described. Many patients with hemi- neglect for extrapersonal space also show neglect in a representational domain when the task requires imagining a well-known piazza from a given vantage point or comparing two visual images. Cognitive and psychophysiological studies show a functional parallelism between the perceptual and imaginative domain, indicating that spatial perception and imagery share the same neural substrata. Here we describe a patient with a persistent disorder in visual imagery for familiar piazzas in the absence of any neglect for stimuli located in a far or near space or on his own body. Contrary to previous cases involving imagery disorders, computerized tomography scans showed a lesion confined to the right frontal lobe, suggesting the role of the frontal lobe in some specific types of mental imagery.

Author-supplied keywords

  • *Visual Perception
  • Cerebrovascular Disorders
  • Eidetic Imagery
  • Emission Computed
  • Human
  • Male
  • Middle Age
  • Single Photon
  • Temporal Lobe
  • Tomography

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  • Guariglia

  • A Padovani

  • P Pantano

  • L Pizzamiglio

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