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Open Access research with a European policy impact...

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EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Around the clock surveillance : Simple graphic disturbance in patients with hemispatial neglect carries implications for the clock drawing task

Smith, A.D. and Gilchrist, I.D. and Butler, S.H. and Harvey, M. (2006) Around the clock surveillance : Simple graphic disturbance in patients with hemispatial neglect carries implications for the clock drawing task. Journal of Neurology, Neurosurgery and Psychiatry, 77 (3). pp. 407-409.

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Abstract

Background: Drawing, and the clock drawing task in particular, is widely used as a diagnostic tool in the study of hemispatial neglect. It is generally assumed that the errors in graphic production, such as the misplacement of numbers, reflect a visuospatial deficit, and that drawing production itself (for example, producing the circle) is unimpaired. Objectives: To test this assumption by examining whether the production of simple circles is affected by neglect. Methods: 16 right hemisphere stroke patients copied circles of various sizes and their drawings were measured for size accuracy. Results: Patients with more severe neglect produced greater scaling errors, consistently drawing the circle smaller than the original. Errors were not in the horizontal axis alone-shrinkage occurred equally in both height and width axes. Conclusions: Neglect can co-occur with constructional difficulties that serve to exacerbate the symptoms presented. This should be taken into account in the assessment of even apparently simple drawing tasks.