Study Of Neglect Syndrome And Line Bisection Task

Objective 1 To investigate the incidence of neglect syndrome and hemianopia after brain damage, and explore the influence factors of the incidence of neglect syndrome and relations between neglect syndrome and brain damage location, and also neglect syndrome and hemianopia. 2 To obtain normal range of line bisection task of healthy Chinese elder volunteers, to understand whether the performance of line bisection by left or right hand is significantly different. 3 To explore the diagnosis value of line bisection task and its neuropsychological mechanism in neglect syndrome and hemianopia. Methods A set of neuropsychological tests were administered in 73 stroke patients with unilateral brain damage for diagnosing neglect syndrome and PERIMETER was done for diagnosing hemianopia at the time of 3 weeks and the 6 weeks after stroke. Line bisection test was administrated for different groups, and the ratios of bias of line bisection were calculated and compared among the different groups. Results: 1. The incidence of neglect was 28.8% at the point of 3 weeks, which occurred in 40.0% of right brain damaged (RBD) patients and 15.2% of left brain damaged (LBD) patients. The rate of LBD is higher than that of RBD ( P<0.01). The incidence of neglect was 19.2% at the point of 6 weeks, which occurred in 32.5% of right brain damaged patients and in 3.03% of left brain damaged patients. The difference among them was significance (P<0.01). 2 The damage locations of neglect involve the parietal in 61.9.5%, temporal in 52.4%, frontal in 23.8%, occipital lobes in 23.8%, basal ganglia in 19.0%, thalamus in 14.3%, insulae lobes in 9.52%, gyrus cinguli in 4.76%. 3 The incidence of hemianopia was 52.3% in the neglect group and 11.5% in the non-neglect group (P<0.01). 4. The performance of line bisection deviated to the left in normal subjects whether using left hand or right hand(left hand -2.19±0.66. right hand...