Abstract
Objectives: Navigation strategies require different complex abilities. Without landmarks, navigation is based on information about self-velocity, which is transformed to position or orientation by a process called path integration (PI). Using PI, one can estimate the own position without visual or acoustic clues by integrating small increments of movement onto a continually updated representation of direction and distance from a starting point. Respective deficits can derive from damages of cerebral areas involved in spatial navigation, particularly structures of the temporal lobe, most notably the hippocampus, entorhinal cortex and parietal cortex. In this study, our aim was to establish a simple diagnostic tool to evaluate PI in patients with suspected deficits in spatial navigation.
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