31. Eye tracking of a right parietal patient and normal subjects during the 7/24 spatial recall test and object memory tests

In previous studies a right parietal patient has demonstrated a visuospatial deficit possibly related to spatial memory. To assess this deficit, the eye movements and fixations of the patient and normal subjects were measured while performing the 7/24 Spatial Recall Test. The subjects also performed analogous tasks testing object memory (images and words), and a task testing spatial and object memory simultaneously. Accuracy results confirmed the patient's earlier finding of a deficit specific for spatial memory. Analysis of the fixations during the initial 10-sec memorization period of the 7/24 Spatial Recall Test showed the patient tends to fixate individual spatial locations more often than normal subjects, suggesting a relative loss in the visuospatial ability to cluster individual objects into groups.