Objective
This research aimed to define the usefulness of the computerized neuropsychological test (CNT) for evaluation of cognitive deficit in the patients with brain injury.

Method
Twenty five subjects with brain injury (16 males, 9 females) were enrolled. Their mean age was 39.2 years. All patient were assessed their cognitive function using CNT. The CNT consisted of digit span, verbal learning test, visual span test, visual learning test, auditory continuous performance test, auditory controlled continuous performance test, visual continuous performance test, visual controlled continuous performance test, word-color test, hypothesis formation test and trail making test. Scores of each subtest on CNT analysed according to the brain lesion and involved hemisphere of the patients.

Results
In patients with left hemisphere lesion, scores in digit span and verbal-learning test were lower than that of right side lesion (p＜0.05). In contrast, patients with right hemisphere lesion showed significantly lower scores in visual span and visual-learning test (p＜0.05). The patients with frontal lobe lesion marked lower scores in verbal-learning and word-color test than the patients without frontal lesion (p＜0.01). Whereas the patients with parietal lobe lesion showed significantly lower scores in visual learning test (p＜0.05) than the patients without parietal lesion.

Conclusion
The cognitive deficit following the brain lesion could be characterized using CNT. CNT is considered to be used as a useful tool in the patients with brain injury for the assessment of their cognitive function.