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为对比自由运动和被动运动时海马神经元群体的协同性,分别在被动运动和自由运动这2种情况下,使用神经信号记录设备记录成年大鼠海马区神经元锋电位和场电位,采用时域相位和频域锋电位-场电位相干这2种分析方法对二者之间的关系进行了探讨。结果显示:被动运动和自由运动时大鼠海马锋电位都受到场电位theta节律调制,被动运动时的调制深度比自由运动时降低。进一步的锋电位-场电位相干分析表明:被动运动时锋电位与theta节律相干值降低。调制深度和相干的降低体现了二者协同性减弱,可能是由于被动运动时本体感觉缺失造成的。
To compare the synergism of hippocampal neurons in both free and passive exercise, neuronal signal recording devices were used to record the spike and field potentials of hippocampal neurons in adult rats under both passive and free exercise conditions. Two kinds of analysis methods, the domain phase and the frequency domain front potential - field potential coherence, discussed the relationship between the two. The results showed that the rat hippocampal frontal potential was modulated by theta rhythms during both passive exercise and free exercise, while the modulation depth of passive exercise was lower than that of free exercise. Further coherence analysis of frontal potential-field potential showed that the coherence of frontal potential and theta rhythm decreased during passive exercise. The modulation depth and coherence reduction reflects the weakened synergy between the two, possibly due to the loss of proprioception during passive motion.