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Landmark based navigation in brain-damaged patients with neglect.
- Source :
-
Neuropsychologia [Neuropsychologia] 2008; Vol. 46 (7), pp. 1898-907. Date of Electronic Publication: 2008 Jan 31. - Publication Year :
- 2008
-
Abstract
- We tested navigational abilities of brain-damaged patients suffering from representational or perceptual neglect asking them to retrieve a location according to salient spatial cues included in a rectangular empty room. Both groups of patients showed difficulties in learning the spatial definition of the target location in relation to two landmarks. However in a delayed attempt performed after several trials the group of patients with perceptual neglect proved able to easily retrieve the target location. In this condition they performed as controls showing a spared ability to navigate according to a stable representation of the room in long-term memory. In contrast the difficulty of patients with representational neglect remained unchanged across experimental conditions. At variance with clinical assessment, in which patients show asymmetrical performances in describing a well-known environment from memory, this latter result depicts a behavioural counterpart of the disorder, namely the inability to orient in a new environment according to an inner representation. Data are further discussed in order to provide a description of the cognitive mechanisms required for space representation for navigation.
- Subjects :
- Adult
Aged
Control Groups
Exploratory Behavior physiology
Female
Form Perception physiology
Functional Laterality physiology
Humans
Male
Maze Learning physiology
Memory physiology
Middle Aged
Neuropsychological Tests
Perceptual Disorders physiopathology
Photic Stimulation
Reaction Time physiology
Space Perception physiology
Brain Damage, Chronic physiopathology
Cues
Orientation physiology
Perceptual Disorders diagnosis
Subjects
Details
- Language :
- English
- ISSN :
- 0028-3932
- Volume :
- 46
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Neuropsychologia
- Publication Type :
- Academic Journal
- Accession number :
- 18316102
- Full Text :
- https://doi.org/10.1016/j.neuropsychologia.2008.01.013