Widening the sphere of influence: using a tool to extend extrapersonal visual space in a patient with severe neglect.

Journal article

We report evidence that visual representations of space close to the body can be extended when a patient uses a tool to explore the environment. HB had severe neglect of left and far spatial regions which was determined more by how locations were visually perceived than by how they were represented tactilely or through proprioception. His ability to detect visual targets in left and far space was improved, however, when he held a tool. He also had limited tactile/proprioceptive knowledge abou...

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Authors: Ackroyd, K; Riddoch, M; Humphreys, G; Nightingale, S; Townsend, S

• Publication status: Published
• Journal: Neurocase
• Volume: 8
• Issue: 1-2
• Pages: 1-12
• Publication date: 2002-01-01
• DOI: 10.1093/neucas/8.1.1
• EISSN: 1465-3656
• ISSN: 1355-4794
• Language: English
• Keywords: Humans; Neuropsychological Tests; Motor Skills Disorders; Functional Laterality; Visual Perception; Space Perception; Hand; Touch; Visual Fields; Proprioception; Posture; Cognition Disorders; Face; Middle Aged; Reading; Male