Feenstra B W, Holsheimer J
Electroencephalogr Clin Neurophysiol. 1979 Nov;47(5):532-8. doi: 10.1016/0013-4694(79)90254-2.
Spatial distribution of theta activity was investigated in the dorsal hippocampal formation and overlying neocortex of the urethane-anesthetized rat. Laminar phase profiles from semi-microelectrode penetartions showed approximately 180 degrees phase shifts combined with small amplitude values in stratum radiatum of CA1, instratum moleculare of the dentate gyrus and in layer V/VI of the cingulate cortex at theta peak frequency. Evidence has been presented that layers of neurons in CA1, in the dorsal granular layer and in the cingulate cortex are the sources of dipole-like theta field potentials. A strong linear relationship between the neuronal theta sources in hippocampal CA1, dentate area and cingulate cortex was found.
在乌拉坦麻醉的大鼠背侧海马结构及上方新皮层中研究了θ活动的空间分布。半微电极穿刺得到的层流相位剖面图显示，在θ峰值频率时，CA1区辐射层、齿状回分子层以及扣带回皮层V/VI层出现约180度的相位偏移，同时伴有小幅度值。已有证据表明，CA1区、背侧颗粒层以及扣带回皮层中的神经元层是偶极样θ场电位的来源。研究发现海马CA1区、齿状回区域及扣带回皮层中的神经元θ源之间存在很强的线性关系。
