摘要(英) |
The brain is mainly consisted of two types of cells: neurons and glia. Neuroscientists have focused on the neuron. However the contribution of the glia cell had been long ignored. Recently, several studies suggest that the glia plays many important roles in the nervous system. It had been found that the ratio of glia to neurons for the famous physicist Albert Einstein is higher than normal human. In addition, another research showed that the ratio of glia to neurons increases with species’ intelligence. This thesis focuses on the role of the glia cell in the neuronal network. First, we use the immunocytochemistry to observe the trend of the cell growth and the density change. Second, we use the multi-electrode array system to record the changes in the firing rate and the synchronous bursting with and without glia with different days in vitro (DIV). Last, we investigate the effect of the NMDA receptor on the neuronal network. In order to investigate the effect of glia on synchronous bursting in neuronal network, we used different drugs to activate the NMDA receptor. We find that in the presence of glia in the neuronal network, the neurons tend to aggregate in clusters. Furthermore, the firing rates increase with DIV, and with higher probability of the synchronous bursting. When the NMDA receptors are activated, the form of the synchronous bursting are different for culture with and without glia. |
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