Experimental research on biological signal processing

近年来，神经科学中的许多实验工作都被研究用于医学应用。基于脑电和脑磁图的海量数据，对快速眼动(REM)、非快速眼动(NREM)和深浅睡眠的睡眠状态进行了基于非平稳谱分析和瞬时最大熵法(IMEM)的睡眠状态自动分析，发现睡眠纺锤体与脑电增量波呈负相关关系，似乎揭示了脑活动的几何关系。

Recently many experimental works in neurological science are investigated for medical applications. Then algorithmical technology of signal processing is required based on those huge data, which are Electroencephalogram and Magnetic-encephalogram.In this study, the sleep status of REM (Rapid Eye Movement), NREM (Non-REM), and Deep/light sleep were analyzed automatically based on nonstationary spectral analysis, IMEM (the Instantaneous Maximum Entropy Method) using the data sets of EEG.We found negative relation of sleep spindle and delta wave of EEG.It seems to suggest an geometric relationship of brain activities.In another work, we investigated neuronethology of fish brain as simplified objects for acquisition of basic knowledge of human brain.