Degenerative dementia with proximal radial and lower vertical spatial neglect

Visual vertical neglect in acquired brain injury: a systematic review

“…Contrary to some findings in the literature ( Mennemeier et al, 1992 ; Mark and Heilman, 1997 ; Chieffi et al, 2019 ; Pisanuwongrak et al, 2020 ), which suggest a possible overlap of neural networks important for mediating attention in proximal/inferior and distal/superior space, we have found that near/lower and far/upper do not always co-occur. Indeed, the presence of manifestations of lower neglect and deficit for both far ( Kageyama et al, 1994 ; Pitzalis et al, 2001 ) and near ( Mennemeier et al, 1992 ; Kageyama et al, 1994 ; Ergun-Marterer et al, 2001 ; Pitzalis et al, 2001 ; Numao et al, 2021 ) space, and of upper neglect and deficit for both far ( Shelton et al, 1990 ; Kageyama et al, 1994 ; Adair et al, 1995 ) and near space ( Kori and Geldmacher, 1999 ) suggests that processing of vertical and radial space may be partially independent.…”

“…We found that vertical bias may occur in conjunction with a deficit in radial space, according to the findings of this systematic review and previously reported in the literature ( Chieffi et al, 2019 ; Julayanont et al, 2019 ; Pisanuwongrak et al, 2020 ). The vertical and radial tasks (e.g., line bisection tasks) may overlap in part; indeed, a classic pencil-and-paper line bisection task, where participants are asked to mark the center of a line placed on a sheet of paper about 30 cm from the participant, could be either a radial egocentric (head-or-body-centered coordinate) or a vertical allocentric (object-centered coordinate) task.…”