Right parietal lesions, unilateral spatial neglect, and the egocentric frame of reference

Recently, the hypothesis has been proposed that the crucial mechanism leading to neglect is the disturbed transformation of sensory input into a supramodal egocentric frame of reference (ER), which causes in turn a deviation of this reference frame toward the side ipsilateral to the brain lesion. Th...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:NeuroImage (Orlando, Fla.) Ročník 20; s. S75 - S81
Hlavný autor: Chokron, Sylvie
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States Elsevier Inc 01.11.2003
Elsevier Limited
Predmet:
Behavior
Brain
Brain - pathology
Functional Laterality - physiology
Humans
Hypotheses
Magnetic Resonance Imaging - methods
Parietal Lobe - pathology
Perceptual Disorders - diagnosis
Perceptual Disorders - pathology
ISSN:1053-8119, 1095-9572
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:Recently, the hypothesis has been proposed that the crucial mechanism leading to neglect is the disturbed transformation of sensory input into a supramodal egocentric frame of reference (ER), which causes in turn a deviation of this reference frame toward the side ipsilateral to the brain lesion. This egocentric coordinate system is normally centered on the midsagittal plane, but a unilateral brain lesion may cause a deviation of the egocentric reference due to an imbalance between the differentially lateralized neural processes which build this representation. Although neglect signs are often defined in an egocentric frame, and an ER shift may be observed in some right-brain-damaged patients (RBD), I present here several data that rule out any causal link between the deviation of the egocentric reference and the presence and/or severity of left-neglect signs in RBD patients.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ObjectType-Review-3
content type line 23
ISSN:1053-8119
1095-9572
DOI:10.1016/j.neuroimage.2003.09.002