NEGLECT OF RADIAL AND VERTICAL SPACE - IMPORTANCE OF THE RETINOTOPIC REFERENCE FRAME

Neglect from bilateral brain injury can disrupt responses along space defined by the vertical and radial axes. The spatial reference frames for vertical and radial neglect remain hugely undefined, however. The viewer centred system, for example, consists of retinocentric and ceph alocentric/corporacentric frames. In the present study, different view er centred reference frames were dissociated in a patient with combine d far radial superior vertical neglect through performance of radial l ine bisections above and below eye level. To separate reference frames for vertical space, bisections were performed while the patient was l ying sideways. Results suggest that this patient's neglect respected a retinotopic viewer centred reference frame.