The studies reported above demonstrate the severe communication deficits that affect the spatial discourse of DAT patients. Their capacities to communicate are limited in many domains, but this is especially evident in the domain of space.
Language itself is not affected and no sign of aphasia was shown by the patients involved in our studies. This is an important point, in that it allows the scientist to obtain knowledge about the DAT patients’ spatial difficulties, complementing the many studies that have documented the severe deficits they experience in spatial orientation and navigation.
Access to memory representations seems to be the most severely damaged function for these patients. However, our data also point to some aspects of spatial cognition and communication that seem to be preserved to some extent.
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