Different patterns of confabulation in left visuo-spatial neglect

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Dalla Barba, Gianfranco | Brazzarola, Marta | Barbera, Claudia | Marangoni, Sara | Causin, Francesco | Bartolomeo, Paolo | Thiebaut de Schotten, Michel

Edité par CCSD ; Springer Verlag -

International audience. Confabulating patients produce statements and actions that are unintentionally incongruous to their history, background, present and future situation. Here we present the very unusual case of a patient with right hemisphere damage and signs of left visual neglect, who, when presented with visual stimuli, confabulated both for consciously undetected and for consciously detected left-sided details. Advanced anatomical investigation suggested a disconnection between the parietal and the temporal lobes in the right hemisphere. A disconnection between the ventral cortical visual stream and the dorsal fronto-parietal networks in the right hemisphere may contribute to confabulatory behaviour by restricting processing of left-sided stimuli to pre-conscious stages in the ventral visual stream.

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