血涂片与血液分析仪

经典血涂片镜检与先进的血液分析仪在血液研究和疾病诊断中各自发挥着重要的作用。对血涂片的制作过程、血涂片在血液研究和检验中的地位、血液分析仪的发展历史和血液分析仪检测优势进行综述,科学评价了血液分析仪的作用,积极鼓励中学生物学课和高校生物及医学相关专业开设好血涂片制作与观察技术这门实验课。     

Hemispheric asymmetry of the space-motion component of a food-conditioned motor reflex

The preference of movement direction in the process of motor food conditioned reaction has been investigated in rats with intact brain and after unilateral cortical inactivation. It was shown that the degree of motorspatial preference diminished with the maturation of reaction. At the high level of differentiation the valid preference was shown only in 38% of animals investigated but it was absent in the rest of animals. After inactivation of right hemisphere cortex left-side preference occurred in the presence as well as in the absence of the original preference. Inactivation of the left hemisphere cortex is less significant; it influences the original preference of movement direction permanently affecting those animals which normally had evident preference. It is concluded that the right hemisphere cortex plays dominant part in both sensor and motorspatial components of motor food conditioned reaction. It is supposed that the definite relationship exists between the degree of preference of movement direction and the functional asymmetry of cerebral hemispheres.