前突的

Nerve impulse is conducted from one neuron to another neuron. The chernical synapse is composed of three

突触前份、突触后份和突触间隙组成，传导神经冲动的化学物质称为神经递质。

In central nervous system only a limited number of vesicles exist in the presynaptic terminals.

中枢神经系统突触前的神经末梢只有少量的突触囊泡存在，突触囊泡数目的多少和融合模式将影响突触传递的效率。

Pentylenetetrazol is a central nervous system drug that induce chronic and acute epilepsy model to study epileptogenous mechanism .Kindling is a natural epileptogenous phenomenon.

我们前期研究工作发现：应用电镜、Timm染色等从形态结构方面已证实在点燃前神经元发生了可塑性改变包括苔藓纤维芽生，新突触形成(突触密度增大或数量增多)与突触重排等，但这些只是一个初步探索，仍不能够说明问题的全部，如其分子生物学基础、神经元凋亡情况等尚不清楚，需进一步研究探讨。

Objective: To explore the corresponding rules between medullary processes and pre-postcentral gyri and provide anatomic basis for locating pre-postcentral gyri by medullary processes.

目的：探索髓突与中央前、后回的对应规律，为影像学上通过髓突定位中央前、后回奠定解剖形态学基础。

Two pathways may belong to the same functional system, though they have some architectural difference. It has been disscussed that some neural structures in the visceral afferent pathway may have some relation to the somesthetic afferent.

在梭形细胞的树突上见到较多的对称性突触，突触前末梢含有多形性囊泡；在卵圆形细胞的远核区和树突上，常见到含圆形囊泡的末梢，与胞体和树突形成不对称性突触。

Synaptic inputs activated repetitively within 20 ms before spiking of the tectal neuron become potentiated, whereas subthreshold inputs activated within 20 ms after spiking become depressed.

在四叠体突触尖波20ms前连续被激发的突触输入将造成突触电位化，然而在尖波产生的20ms后的小于临界输入将造成突触抑制。

Synaptic inputs activated repetitively within 20 ms before spiking of the tectal neuron become potentiated, whereas subthreshold inputs activated within 20 ms after spiking become depressed.

在四叠体突触尖波20ms前连续被激发的突触输入将造成突触电位化，然而在尖波产生的20ms后的小於临界输入将造成突触抑制。

The results suggest that there is prominent short-term synaptic depression in the rat thalamocortical visual pathway. Presynaptic transmitter depletion and postsynaptic GABAergic inhibition are the main possible mechanisms of this synaptic depression. The short-term synaptic depression is helpful in neuronal correlated firing detection.

以上结果表明：丘脑皮层视觉通路具有显著的短时程突触抑制特性，突触前的递质耗竭和突触后的GABA能抑制系统很可能是产生视通路短时程突触抑制作用的主要机制，突触抑制作用有助于视觉系统对同步发放活动的检测。

The transmission is conducted in the form of action potentials along the axon of DRG neuron to the presynaptic membrane in spinal dorsal horn. Action potential depolarizes the presynaptic membrane and activates the voltage-dependent Ca〓 channel. The influx of Ca〓 then triggers the release of neurotransmitter.

外界感觉信息以动作电位的形式沿DRG细胞轴突由外周传向DRG细胞在脊髓背角的突触前膜，导致细胞膜去极化，引起电压依赖性〓通道的开放，〓内流介导突触前膜神经递质的释放，从而完成感觉信息由外周向脊髓的传递。

An electrophysiologic study on sEMG of trunk rotaory muscles in stroke patients;2. The characteristics of the skeletons of the trunk in bactrian camel are the following.

双峰驼躯干骨的特征如下：寰椎的背腹侧嵴都不明显，有外侧孔、翼孔、横突孔；枢椎较长；第3，4和5颈椎的横突前支比后支长；第6颈椎有不太典型的横突中支；第7颈椎横突不分支。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！