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Looking for thecompass in a case ofdevelopmentaltopographicaldisorientation: Abehavioral andneuroimaging study Liana PalermoLaura PiccardiFilippo Bianchini2014 год

Looking for the compass in a case of developmental topographical disorientation: A behavioral and neuroimaging study
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Аннотация: AbstractDevelopmental topographical disorientation (DTD) is the presence of navigational deficits in the context of normal intellectual ability and in the absence of any perinatal, neurological, or psychiatric disorder. As only three cases of DTD have been fully described thus far, we are still unable to draw definitive conclusions about its nature and relationship with other visuospatial competencies, such as mental rotation. The case of Mr. L.A., a 38-year-old man with no history of neurological or psychiatric disorders, sheds some light on these open questions. A neuropsychological assessment including IQ, memory, visuospatial, visuoconstructive, and navigational tests showed that Mr. L.A. has pure navigational deficits affecting both route knowledge and cognitive map processing. Unlike previously described cases of DTD, Mr. L.A. was not affected by any other visuospatial or visuoconstructive deficits. In a functional magnetic resonance imaging (fMRI) task involving the recall of route knowledge, Mr. L.A. showed activation in the occipital areas, involved in low-level perceptual analysis of the stimuli, and showed no activation in the areas activated in controls with regard to route knowledge. The present case suggests that different types of DTD exist, which are characterized by different navigational difficulties and anomalous/lacking functional brain activities in specific navigational networks.Keywords: Human navigationSpatial memoryDevelopmental disordersTopographical disorientationMental rotationCognitive mapFunctional magnetic resonance imaging AcknowledgementsWe are thankful to Giuseppe Iaria and to the NeuroLab (www.neurolab.ca) for providing us with the Cognitive Map Test (CMT) and to an anonymous reviewer for valuable comments that helped us in improving the interpretation of our case.
Год издания: 2014
Авторы: Liana Palermo, Laura Piccardi, Filippo Bianchini, Federico Nemmi, V. Giorgio, Chiara Incoccia, Umberto Sabatini, Cecilia Guariglia
Издательство: Taylor & Francis
Источник: Journal of Clinical and Experimental Neuropsychology
Ключевые слова: Spatial Cognition and Navigation, Child and Animal Learning Development, Hemispheric Asymmetry in Neuroscience
Другие ссылки: Journal of Clinical and Experimental Neuropsychology (HTML)
PubMed (HTML)