Lambertz M, Schulz G, Langhorst P
Institut für Physiologie, Freie Universität Berlin, Germany.
J Auton Nerv Syst. 1995 Feb 9;51(2):165-73. doi: 10.1016/0165-1838(94)00128-7.
Neurons of the central and basal part of the amygdala complex were recorded in conscious, freely moving cats. These neurons have various cardiac rhythmic discharge patterns (CRDPs) which are estimated by post-event-time histograms (PETH). When the firing level of the neurons changed, the CRDPs were modulated. These modulations became obvious, when 'partial' PETHs of the neuronal activity were constructed according to the discharge level of the neurons. With changes of the neuronal discharge level different types of CRDPs were observed, interlaced in time during recordings of the same neuron. In 'total' PETHs, taken from the continuous periods of neuronal activity, cardiac rhythm was hidden or often was not so clearly visible as in 'partial' PETHs, taken at different discharge levels. As in case of neurons of the nucleus tractus solitarii (NTS) and for brainstem reticular neurons, amygdala neurons exhibited modulations of CRDPs as their activity level changed. The results indicate that the processing of activity patterns in these neurons depends on their activity level and functional organization, which is essentially dependent on afferent signals and influences from central structures reaching these neurons.
在清醒、自由活动的猫身上记录杏仁核复合体中央和基部的神经元。这些神经元具有各种心脏节律性放电模式（CRDPs），通过事件后时间直方图（PETH）进行评估。当神经元的放电水平发生变化时，CRDPs会受到调制。当根据神经元的放电水平构建神经元活动的“部分”PETH时，这些调制变得明显。随着神经元放电水平的变化，观察到不同类型的CRDPs，在同一神经元的记录过程中在时间上相互交织。在从神经元活动的连续时间段获取的“整体”PETH中，心脏节律被隐藏或通常不如在不同放电水平获取的“部分”PETH中那样清晰可见。与孤束核（NTS）神经元和脑干网状神经元的情况一样，杏仁核神经元随着其活动水平的变化表现出CRDPs的调制。结果表明，这些神经元中活动模式的处理取决于它们的活动水平和功能组织，而这在本质上取决于到达这些神经元的传入信号和来自中枢结构的影响。
