At the same time , isi ( interspike interval ) reflects the arrangement of action potential in time space , and there may be more information in the isi data than that in firing frequency 而神经放电峰峰间期( interspikeinterval ， isl )反映了神经元发放动作电位在时间上的排列，其形式多样，蕴含着更丰富的信息。
Under the condition of ead generation , the low and high membrane level - 25 and - 55mv of voltage were clamped during the repolarization phase of action potential . on low membrane level of - 25mv , a slow inward current similar to 在低钾灌流并伴有ead的情况下，于动作电位复极相的低及高电位处- 25与- 55mv分别进行电压钳制。
The bioelectric phenomena of cell and their mechanisms ; the excitation and excitability of nerve and muscle ; the conduction and transmission mechanisms of action potential ; transport function across cell membrane 细胞的生物电现象及其产生机制；神经和肌肉的兴奋和兴奋性；冲动的传导和传递机制；细胞膜的物质转运功能。
Second , according to the characteristic of the instantaneous change of action potential accompanied by the nerve impulse , we use h - h equation to describe such change , and conduct simulation combined with sr theory 然后根据产生神经冲动时动作电位全或无式瞬时快速变化的特点，采用h - h方程作为描述这种变化的神经元模型，结合随机共振理论进行了仿真研究。
Its salient features are its ability to open to ionic current when stimulated on its dendrites ; to sum the incoming potentials in its cell body and to emit an action potential down its atomic part , if the potential accumulated is high enough 其显著特点为：当加刺激于其树突上时能开启离子电流；能将进入细胞体中的电位相加，如积累的电位足够高，则发出一动作电位(冲动) 。
Meanwhile physiologists and biochemists were finding that glia had receptors for many of the same neurotransmitters neurons use for synaptic communication , as well as most of the ion channels that enable neurons to fire action potentials 同时，生理学家与生化学家也发现，神经胶细胞有受体，可以接受神经元用以做突触沟通的许多神经传递物，它们也同样有大多数神经元用来产生动作电位的离子通道。
During soleus exposing to high - frequency stimulation , potassium ions accumulation and sodium ions exhausting are formed rapidly in t - tubule . the ion concentration alterations in t - tubule lead to a depolarization block of t - tubular action potential , then inhibit the function of l - type ca2 + channels 萎缩使sol肌纤维t管内k ~ +更易集聚， na ~ +更易耗竭，动作电位由t管向内传导易受到阻滞，从而使l型钙离子通道功能受抑制。
Topics covered include : mass transport through membranes ( diffusion , osmosis , chemically mediated , and active transport ) , electric properties of cells ( ion transport ) , equilibrium , resting , and action potentials , kinetic and molecular properties of single voltage - gated ion channels 内容包括：细胞膜上的物质传输（扩散、渗透、化学为媒介的传输以及主动传输） ；细胞的电子特征（离子传输） 、平衡、静息和动作电位；单个电压门控离子通道的动力学和分子特性。
Topics covered include : mass transport through membranes ( diffusion , osmosis , chemically mediated , and active transport ) , electric properties of cells ( ion transport ) , equilibrium , resting , and action potentials , kinetic and molecular properties of single voltage - gated ion channels 内容包括：细胞膜上的物质传输（扩散、渗透、化学为媒介的传输以及主动传输） ；细胞的电子特徵（离子传输） 、平衡、静止和动作电位；单个膜电位敏感型离子通道的动力学和分子特性。
It is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ) . in the present study a ventricular pressure - clamping system has been developed , which can be applied to isolated - perfused rabbit hearts . controlled by a computer , this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition , but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase . this system integrates multiple functions , including perfusing , pacing , recording of electrocardiogram and monophasic action potentials , and clamping and measuring of ventricular pressures in isolated - perfused hearts . thus , it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level 在心脏机械电反馈的研究中准确控制机械刺激是非常重要的.本研究室构建了一套适用于离体家兔心脏的心室压力钳系统.该系统通过计算机控制压力钳,不仅能模拟正常生理条件下左心室的压力波形,还能在心室活动周期的特定时相、以适当波形对心室施加机械刺激.该系统集心脏灌流与起搏、表面心电图记录、单相动作电位记录、心室压力钳制与测定等多种功能于一体,特别适用于器官水平上观察机械电反馈现象并探讨其机制
