Topographical disorientation in aging. Familiarity with the environment does matter
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Topographical disorientation (TD) refers to navigational impairment as an effect of aging or brain damage. Decreases in navigational performance with aging are more due to deficits in the ability to mentally represent space in an object-centered (allocentric) than in a self-centered (egocentric) format. Familiarity/remoteness of spatial memory traces can represent a protective factor for TD in aging. Conversely, using newly learned information for assessment may lead to overestimating TD severity as it combines two contributing factors: heading (allocentric) disorientation and anterograde agnosia. A supplementary evaluation of TD with aging according to ecological spatial tasks is recommended. The core tasks should focus on landmark positioning, both on a blind map (allocentric) and along a route (egocentric) of the hometown so as to disentangle spatial memory for familiar/remote information from decline due to recent encoding of information.
KeywordsAllocentric representations Egocentric representations Aging Familiar environments Topographical disorientation
The second author (AOC) was supported by the project “Epidemiology of Topographical Disorientation and Mild Cognitive Impairment in a South Italian elderly population” - Action Co-founded by Cohesion and Development Fund 2007–2013 - APQ Research Puglia Region “Regional programme supporting smart specialization and social and environmental sustainability - FutureInResearch” (Grant Code CEY4SQ4). All the authors contributed to the conception, drafting and revising the work.
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Conflict of interest
The authors declare that they have no conflict of interest.
This is a review article that has not been published previously and is not under consideration for publication elsewhere. This work has been approved by all authors and explicitly by the responsible authorities where the work was carried out, and if accepted, will not be published elsewhere.
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