Spatial Neglect, Balint-Homes' and Gerstmann's Syndrome, and Other Spatial Disorders

@article{Vallar2007SpatialNB,
  title={Spatial Neglect, Balint-Homes' and Gerstmann's Syndrome, and Other Spatial Disorders},
  author={Giuseppe Vallar},
  journal={CNS Spectrums},
  year={2007},
  volume={12},
  pages={527 - 536}
}
  • G. Vallar
  • Published 1 July 2007
  • Psychology, Biology
  • CNS Spectrums
ABSTRACT Brain-damaged patients with lesion or dysfunction involving the parietal cortex may show a variety of neuropsychological impairments involving spatial cognition. The more frequent and disabling deficit is the syndrome of unilateral spatial neglect that, in a nutshell, consists in a bias of spatial representation and attention ipsilateral to of extrapersonal, personal (ie, the body) space, or both, toward the side of the hemispheric lesion. The deficit is more frequent and severe after… 
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References

SHOWING 1-10 OF 97 REFERENCES
Extrapersonal Visual Unilateral Spatial Neglect and Its Neuroanatomy
TLDR
The emerging pattern is that USN is a multifarious disorder, in which specific deficits are associated with damage localized in discrete brain regions and neural circuits, and concur with evidence from other domains to suggest a highly multicomponential neural and functional architecture of spatial cognition.
Spatial hemineglect in humans
  • G. Kerkhoff
  • Psychology, Biology
    Progress in Neurobiology
  • 2001
The anatomy of neglect without hemianopia: a key role for parietal–frontal disconnection?
TLDR
Findings call attention to the role of parietal–frontal disconnection in the pathogenesis of neglect, which can make neglect generalised and enduring also in patients suffering only partial damage of the parietal-temporal cortex, and who would otherwise show more selective attentional impairments.
Brain-behavior correlations in hemispatial neglect using CT and SPECT
TLDR
Damage in the parietal and anterior cingulate cortex and posterior white matter fiber bundles correlated with hemispatial neglect, suggesting that combining structural- and functional-imaging techniques with neurobehavioral analysis can elucidate brain-behavior relationships.
Neglect and prism adaptation: a new therapeutic tool for spatial cognition disorders.
TLDR
These cognitive effects of prism adaptation suggest that prism adaptation does not act specifically on the ipsilesional bias characteristic of unilateral neglect but rehabilitates more generally the visuo-spatial functions attributed to the right cortical hemisphere.
Anosognosia for motor and sensory deficits after unilateral brain damage: a review.
TLDR
It is made that anosognosia for sensory and motor neurological deficits should be considered as a multi-component syndrome, including a number of specific disorders that are due to the impairment of discrete monitoring systems, specific for the different supervised functions.
...
...