1 解放军理工大学电磁环境效应与电光工程国家重点实验室, 江苏 南京 210007
2 解放军电子工程学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
为了分析小鼠视觉区脑电波(EEG)信号与呼吸运动之间的关联性,类比电磁场与 二能级原子的相互作用,建立了描述呼吸相关脑电波信号激励与传播的双态量子系统与 外场相互作用的半经典(EEG场经典描述)与全量子(EEG场量子化)模型,并证明了模型的 正确性。基于相干性理论建立了脑电波信号关联的高阶相干分析模型。在睡眠状态,归一 化互相干函数的平均幅值在0.3左右,高阶自相干函数曲线相似性很高,可以断定睡眠状态 EEG信号与呼吸运动接近实相关; 在清醒状态,归一化互相干函数的平均幅值在0.1左右,高阶自相干函数曲线一致性降低, 可以断定清醒状态EEG信号与呼吸运动为弱相关。
量子生物物理学 量子光学 关联性分析 半经典模型 量子模型 脑电波 quantum biophysics correlation analysis semi-classical model quantum model electroencephalograph
Author Affiliations
Abstract
Institute of Precision Optical Engineering, Department of Physics, Tongji University, Shanghai 200092
A grating structure with period of half of the laser wavelength generated by focusing Cr atoms with nearly resonant laser standing wave atom lens was simulated using a quantum-mechanical model. The influence of thermal atomic source on atom focusing, including the statistical distribution of the longitudinal velocity and the beam divergence, was discussed. The background and full-width at half-maximum (FWHM) of atomic density peaks with vz in Maxwell distribution and vx0 in Gaussian distribution increase significantly compared with ideal atoms. Collimating atoms with laser cooling is necessary to decrease the peak broadening.
原子透镜 量子模型 激光驻波场 像差 半峰全宽 对比度 020.0020 Atomic and molecular physics 260.0260 Physical optics 270.0270 Quantum optics Chinese Optics Letters
2007, 5(10): 602
