Abstract
Six patients with visuospatial neglect following right hemisphere lesions were given three tasks that assessed performance in areas of space ranging from extreme left to extreme right. A line bisection task required the patients to detect and bisect lines of four different lengths at seven left-right spatial locations, a number report task required the patients to name 11 two-digit numbers in a left-right array, and a tiling task required patients to place small black tiles over the black squares of a grid that stretched from 65 degrees left to 65 degrees right. Performance was compared with that of 20 agematched controls. The patients showed the characteristic signs of left-side neglect in left space, extending to the central midline. Performance was relatively normal in centre-right space but all 6 patients showed signs of neglect of extreme right space (60 degrees to the right of the midline and beyond). We propose that neglect is best characterised as a bilateral, asymmetrical compression of experienced space in which the constriction extends further from the left than from the right but nevertheless affects both sides of space.
| Original language | English |
|---|---|
| Pages (from-to) | 861-868 |
| Number of pages | 8 |
| Journal | Cortex |
| Volume | 42 |
| Issue number | 6 |
| Publication status | Published - Aug 2006 |
Keywords
- visuospatial
- neglect
- line bisection
- cancellation
- LINE-BISECTION
- VISUAL NEGLECT
- VISUOSPATIAL NEGLECT
- STROKE
- LATERALITY
- DIASCHISIS
- ATTENTION
- CROSSOVER
- TASK