The influence of misnaming on object recognition: A case of multimodal agnosia

We present a case of multimodal agnosia in the visual and tactile modality due to an infarction in the territory of the left posterior cerebral artery . The patient's ability to recognize objects fluctuated depending on his ve rbal activity. When he misnamed presented objects, he tended to use them an d to draw them in keeping with the wrong name. We submit: that the mechanis m causing associative agnosia is more dynamic than it was hitherto consider ed. It originates from the rivalry between top-down central regulation and bottom-up peripheral flow.