汉字音匹配和半球加工

This study explores hemispheric processing and relations during the homophone matching. In the literature summary, we review the past studies employing Tachistoscopic Presentation of Divided View Field (DVF) to the two hemispheres cooperation, and point out the different and complex opinions about both homophone matching and hemispheric processing. to some focuses, we handle this study by six behavioral experiments. First, under the condition of stimulus presenting simultaneously and function of graphic/semantic dimension, we study the bilateral/unilateral processing efficiency, the function on the level of synonym/similar grapheme. Main result shows, during homophone matching, bilateral processing is better than unilateral one, i.e., bilateral processing advantage rises. For further study whether the effects of transferring information between hemispheres will change along the time, combining with the paradigm of Priming, we make the stimulus present in the certain order; and under the function of graphic/semantic dimension, we also study the bilateral/unilateral processing efficiency, the function on the level of synonym/similar grapheme. Results show, there is semantic/graphic information which brings effects on homophone matching transferring between two hemispheres. And semantic/graphic information can be affected with the time, for example, when SOA = 210ms, the effect of semantic/graphic information disappears. When homophone present in the sequence, bilateral processing advantage also disappears, there are no significant differences between bilateral processing and unilateral one. In addition, we also explore whether sex differences exist during bilateral homophone matching, and we get, there are no significant differences between different sex. Among all experimental results, we also find several special phenomenon as the following example: 1) when stimuli presenting simultaneously during homophone matching on the level of synonym/similar grapheme, the processing effect of LVF(Left View Field) is better than RVF (Right View Field). 2) when stimuli presenting simultaneously, during homophone matching on the level of synonym/similar grapheme, one hemisphere may inhibit the other (because of the interference). to wrap up, under certain condition bilateral processing advantage is obtained, and during the interhemispheric interaction when homophone matching, some kind of information will relay between two hemispheres. And when two hemispheres cooperate, mutual inhibition (or interference) also follows. Further, interhemispheric interaction is closely connected with time, the attribution of stimuli, and so on. At last, a model is put forward to describe the coordinated process and the possible relations between two hemispheres.

The Influence of Age and Sex on the Cell Counts of Peripheral Blood Leukocyte Subpopulations in Chinese Rhesus Macaques

therapeutic drugs, vaccines and mechanisms of human diseases. Little is known about the normal levels of leukocyte subpopulations of Chinese rhesus macaques. To obtain these data, 100 blood samples from Chinese rhesus macaques were collected. The normal range of major leukocyte subpopulations, such as T lymphocytes, B lymphocytes, monocytes, myeloid dendritic cells (mDCs) and plasmacytoid dendritic cells (pDCs), were quantitatively analyzed by flow cytometry through BD trucount tubes. The influence of age and sex on the cell counts of leukocyte subpopulations was analyzed. The counts of CD3+ T cells, CD3+CD4+ T cells, CD3+CD8+ T cells and B cells decreased with age, but those of monocytes, mDCs and pDCs had no significant correlation with age. Significant differences existed in the cell counts of most leukocyte subpopulations between the male and female groups except pDCs. Furthermore the values of the females were higher than those of the males. The study provided basic information about the leukocyte subpopulations of Chinese rhesus macaques, and it may be valuable for immunobiological study of Chinese rhesus macaques. Cellular & Molecular Immunology. 2009;6(6):433-440.

Evaluation of sex specificity on oxidative stress induced in lungs of mice irradiated by C-12(6+) ions

The aim of this work is to identify if there is sex specificity on C-12(6+) ion-induced oxidative damage in mouse lung at different time points. Kun-Ming mice were divided into two groups, each composed of six males and six females: control group and irradiation group with a single acute dose of 4 Gy. Animals were sacrificed at 2, 4 and 12 h respectively, there lungs were removed immediately, and the oxidative stress-related biomarkers were measured by Diagnostic Reagent Kits. The results showed that the relative activities of superoxide dismutase (4 h), catalase (2 h) and Se-dependent glutathione peroxidase (12 h) have significant changes (P < 0.05) between male groups and female groups, suggesting that the lungs of male mice are more sensitive to counteracting the oxidative challenge. Moreover, higher levels of malondiadehyde and lower contents of glutathione were also found in males, indicating that oxidative stress induced by C-12(6+) ion is pronounced in the lungs of males. We thought that these sex-responded differences may be attributed to the influence of sex hormones.

Host sex and ectoparasite infections of plateau pika (Ochotona curzoniae, Hodgson) on the Qinghai-Tibetan Plateau

A total of 449 plateau pika (Ochotona curzoniae Hudgson) individuals were sampled with rattraps from 21 plots (size 1 ha) randomly scattered over the area of the species distribution at the altitude 3275-4807 in a.s.l. in the Qinghai-Tibetan Plateau (West China). Two main ectoparasite species Hypoderma satyrus Brauer and Ixodes crenulatus Neumann of plateau pika were surveyed, and the relations between host sex and parasitism were analyzed. The results were: (i) although not significantly, the infection rate of female young was close to zero and lower than that of male young (6%), while the infection rate of female sub-adults (19%) was contrarily - higher than that of male sub-adults (11%); adult females had significantly higher (41%) infection rate than that of males (18%) (P<0.001); (ii) the parasite infection rates for both males and females increased with increasing age, but female age-groups had obviously steeper slope. We suggested that the differences of body mass, growth rate and home range between males and females had mainly caused the sex-biased parasitism (SBP) of plateau pika at each age stage. Also, due to the higher increases of body mass and maybe as well as of the home range differences between consecutive age-groups, the parasite infections of females became more sensitive to the influences of age than that of males.