| Cognitive feature is characteristics of psychological activities. In this paper, we investigated the cognitive disorders on patients suffering from cerebral tumor with the Cognitive Laterality Battery (CLB), and explored the relationship between the structure and psychological function of the brain.In this study the revised CLB, designed by H.W.Gordon, American neuropsychologist, are used as instrument. CLB includes two parts. One is about the tests on the visuospatial factors, composed with localization, orientation, form completion and touching blocks, which used to evaluate the level of cognitive abilities of individuals and groups. The other is about the tests on verbal-sequential factors, composed with serial sounds, serial numbers, word production (letter) and word production (categories). With the test scores, the language abilities of individuals and groups are judged. On the basis of eight sub-tests' scores, the synthetic index is obtained: ﹕cores A of the eigenvalues of the visuospatial factors, the value is equal to the average of the scores of the four eigenvalues of the visuospatial tests, ﹕cores P of the eigenvalues of the verbal-sequential factors, the value is the average of the scores of the four eigenvalues of the verbal-sequential tests. (3)CLQ, cognitive laterality quotient, is the remainder of the above scores(A and P), ie, CLQ=A-P.That CLQ is below zero showed that the principal characteristic of the subject's cognitive feature tends to language cognition. When above zero, shows that the main characteristic tends to spatial cognition.This paper comprises two parts. Part 1: study of the cognitive disorder on cases with right cerebral tumor. A case control study was carried out, based on 26 patients with right cerebral tumor and 26 matched healthy people. The case entering standard: adults, aged from 18 to 60, without consciousness disorder, aphasia, obvious sight disorder, without such diseases as hypertension and diabetes and so on. The results of CT and MRI showed that there are obvious localizations and confirmed by surgery. The tests were performed a week before surgery. The patients are cooperative and have not apparent headache, when the tests are being performed. The age, sex and literacy level of the control groups are matched with those of cases. They are all right-handness. Result: the four scores of localization, orientation form completion and touching blocks of the test groups are all lower than those of the control groups(P < 0.05). The A values are 94.91 and 104.40, respectively. Among the four scores of the eigenvalues of the verbal-sequential factors, the score of serial sounds of the test group is significantly lower than that of the control group(P < 0.05). the difference between other scores such as serial numbers, word production (letter) and word production (categories) of the test group and the control group is not significant(P > 0.05). The P values are 95.56 and 102.30, respectively. The CLQ value of the test group is -1.65. Conclusion: The eigenvalues of the visuospatial factors of the test group are significantly lower that that of the control group. It shows that the brain damage causes by right cerebral tumor will influence spatial skills of human beings. The test ofserial sounds, which is the sub-test of verbal-sequential skills, involves many tasks, including audition, writing, attention and memory and so on. The complex task was done in coordination with both cerebral hemispheres. In addition, the sound, as non-verbal material, firstly goes into brain, formed and synthesized by right hemisphere, then goes through coordinative fiber to left hemisphere and is abstracted and analyzed by left hemisphere, eventually, the notion of the objective which givers out the sound is formed and written correctly. In our study, the patients of test group suffer from right cerebral hemisphere tumors, which impair the brain. So the scores of serial sounds of test group are different significantly from that of control group. While the other three scores are n...
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