Abstract
On the debated role of temporo-parietal dysfunction in patients with basal ganglia neglect
Highlights
A lively debate in neuropsychology addresses the question of which neural structure, when damaged, causes spatial neglect
Spatial neglect is provoked by damage to a spatially distributed right hemisphere network of cortical and subcortical structures that directly or remotely impairs brain areas dedicated to the orientation of visuospatial attention (e.g., Karnath et al, 2009; Thiebaut de Schotten et al, 2012; for a recent meta-analysis, see Molenberghs et al, 2012 and comments in Bartolomeo, 2012)
The authors found that: “strokes centering on the right basal ganglia which provoke spatial neglect induce abnormal perfusion in a circumscribed area of intact cortex that typically involves those three regions that have previously been described to provoke spatial neglect when damaged directly by cortical infarction: the superior temporal gyrus, the inferior parietal lobule and the inferior frontal gyrus”
Summary
A lively debate in neuropsychology addresses the question of which neural structure, when damaged, causes spatial neglect. At times, neglect and extinction are associated with areas of dysfunctional but structurally intact tissue beyond the structural damage itself (e.g., Hillis et al, 2001, 2005; Karnath et al, 2005; Ticini et al, 2010a; Khurshid et al, 2012).
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