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Localisation of the lesion

Authoring team

Visual agnosias are usually caused by lesions in the parietal lobes in the visual association cortex.

There is some evidence for lateralization of visual processing:

  • lesions in the dominant parietal lobe are more likely to interfere with the understanding of:
    • objects
    • colour
    • letters

  • lesions in the non-dominant parietal lobe are more likely to interfere with the understanding of:
    • unusual views of objects
    • place
    • face recognition

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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