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Cannabinoids attenuate hippocampal gamma oscillations by suppressing excitatory synaptic input onto CA3 pyramidal neurons and fast spiking basket cells

机译:大麻素通过抑制向CA3锥体神经元和快速突触篮细胞的兴奋性突触输入来减弱海马伽马振荡。

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摘要

Non-technical summaryAdministration of cannabinoids can impair several cognitive functions, including memory by altering synchronous activities in cortical networks. We show that the gamma frequency (40 Hz) oscillations in hippocampal slices, that are prominent oscillations in electroencephalogram during awake states in vivo, are reduced by cannabinoids. This effect can be explained by the suppression of the excitatory synaptic transmission onto fast spiking basket cells, GABAergic cells that are key players in oscillogenesis. The reduced excitatory drive onto these interneurons leads to a reduction in neuronal firing frequency and precision, and thus to smaller field potentials. Our data further our understanding of the synaptic mechanisms of how cannabinoids alter neuronal operation.
机译:非技术摘要大麻素的管理可能会损害多种认知功能,包括通过改变皮层网络中的同步活动来记忆。我们显示,大麻素可降低海马脑片的伽马频率(40 Hz)振荡,这是体内醒着的状态下脑电图中的突出振荡。可以通过抑制兴奋性突触传递到快速增生的篮状细胞(GABA能细胞)上来解释,该细胞是振荡发生的关键因素。对这些中间神经元的兴奋性驱动的减少导致神经元激发频率和精度的降低,并因此导致较小的场电位。我们的数据进一步了解了大麻素如何改变神经元操作的突触机制。

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