关键词： Point Process   Spike Train   Interspike Interval   Flicker Noise   Interval Density  

摘要： The spike train activity of neurones is considered as a point process, and methods of analysing and interpreting recorded spike trains are considered. The generation of a continuous process (membrane noise) from interacting point processes is described.

关键词： 技术练习   素质训练   冰球队   所有   队员   锦标赛   运动竞赛   冰球运动员   加拿大   北美洲   中华人民共和国  

摘要： 肌肉耐力着重有氧代谢和无氧代谢的全面素质训练和力量素质训练会自然而然地提高运动员们坚持肌肉工作的能力(快而猛地速滑、灵敏滑行、碰撞与对抗动作等等).但是还要安排冰上或陆上专门的肌肉耐力素质训练.这方面素质的发展要工作——休息交替地反复做力量性练习.这里要改善肌肉中的毛细血管系统(以改善血液的

摘要： From the studies on the neurophysiology of schistosomes it appears that in spite of the unique hexilaminar arrangement of the tegument's outer membrane, it has biophysical properties not markedly different from those of a variety of other multi-dimensional syncytia. The close electrical coupling of the muscle and tegument must be taken into account when one attempts to define sites and modes of action of drugs which affect motor activity. Agents which disrupt muscle function in the schistosome may exert their action indirectly by way of an effect on the tegumental membrane. The syncytial nature of the musculature and the possibility that longitudinal contraction waves are myogenic suggests that neurotransmitters may simply function as modulators of muscle activity as is the case for many vertebrate visceral muscles. External recordings indicate the presence of a variety of electrically active tissues within the schistosomes. There is no clear correlation of this activity with longitudinal muscle activity or with active membrane responses in this muscle. From this it would appear the bulk of this activity may have its origins in tissues other than the longitudinal muscle such as other muscle groups, nerve trunks, or the peripheral nerve net.

关键词： 突触后膜   受体蛋白质   递质   突触前部   突触前成分   神经生理学   神经解剖学  

摘要： 离子通道的类型神经元细胞膜上与神经传导和突触传递有关的离子通道,有对电压变化敏感的离子通道（v）,由递质致活的离子通道（t）,主动运输离子通道（a）以及漏泄通道（1） 等类型。神经元膜上的钠离子通道有:Na+v 通道,在膜电位变化下开放（一般是去极化达到-55毫伏时）。Na+t 通道,当递质与受体蛋白质结合时开放。Na+a 通道,完成 Na+从神经元排出的主动运输作用。

关键词： 术后病人   纤维   心理学   文明   疼痛受体   减轻疼痛   外科手术后   神经生理学   术前   止痛药   恢复室   脊髓丘脑束   脊丘系   护士   硫喷妥钠   巴比妥酸盐  

摘要： 本文的目的是介绍一些关于临床疼痛,尤其是术后疼痛现象的现代概念。实际上,本文试图使用一种结合推论和归纳的调查方法学来阐明术后疼痛的概念。这对护理具有什么意义呢?为试图阐明术后疼痛的概念对护理的关系而又不一如既往地借助其它科学,因此乃决定要亲自观察手术后病人并征求与此类病人保持接触的同事的意见。其最终目的是要得出理论和临床观察之间的关系,进而阐明疼痛的概念。

关键词： 快眼动睡眠   网状结构   上行激动系统   中缝核   脑干   慢波睡眠   神经生理学  

摘要： 两种睡眠状态睡眠和觉醒的周期性交替是人和许多高等动物普遍的生理现象。这一现象与神经系统的机能直接相关,历来是神经生理学的研究课题。本世纪30年代中期,人们开始应用脑电图于睡眠研究,使这一领域的工作迅速发展起来。但在50年代以前,人们只注意到睡眠与脑电波的所谓“同步化”(即脑电波频率减慢而振幅增大的现象)相伴随。1953年Aserinsky和Kleitman发现了一种“异乎寻常”的睡眠状态:睡眠者出现一种特殊的快速眼球运动,此时脑电图呈现

关键词： Science   Humanities and Social Sciences   multidisciplinary  

摘要： THE cochlea in the inner ear of mammals is capable of detecting sounds whose frequencies vary over seven orders of magnitude - a feat whose mechanism is still not understood. It has however become clear that the extraction of frequency information in non-mammalian vertebrates often depends on inner ear structures somewhat different from those of mammals, and operating on rather different principles. Although the frequency range detectable by lower vertebrates is more restricted than the mammalian one, the hope is that the transduction mechanism by which the sensory cells convey frequency information to the auditory nerve will prove to be the same1. The paper by Lewis and Hudspeth in this issue of Nature2, describing the membrane properties of frequency-sensitive hair cells in the frog, may thus have general significance for understanding how lower vertebrates convey frequency information to the auditory *** mammals, the basis of frequency discrimination is believed to be the mechanical travelling wave set up in the inner ear by the sound wave and first described by von Bksy3. The wave travels along the basilar membrane on which the hair cells rest and the point in the membrane at which the wave reaches its peak amplitude depends on the frequency of the sound. This mechanically ensures that different acoustic frequencies stimulate distinct sets of cochlear hair cells. Improved experimental methods have shown that the basilar membrane tuning is sharper than can be accounted for by its passive mechanical properties alone4,5 and the emphasis has shifted to those properties of the hair cells and the structure of the cochlear partition that could be responsible. The details remain as enigmatic as ever but recent modelling attempts6 have suggested that energy has to be fed into the basilar membrane in the region of the envelope peak in order to account for the observed *** some species tuning can occur even in the absence of a travelling wave. Where the dividing

摘要： 在中华医学会上海分会领导的支持下,我市于1982年7月2～3日举行首届大型脑电图和临床神经生理学研究会学术会议,出席会议共300人。大会和分题会议共交流脑电图、肌电图、诱发电位等论文44篇。主要内容为脑瘤、癫痫、脑炎、内分泌疾病以及激发试

关键词： Animals   Arcuate Nucleus/cytology   Hypothalamo-Hypophyseal System/innervation*   Neurons/physiology*   Pituitary Gland, Posterior/cytology   Pituitary-Adrenal System/innervation*   Rats/physiology*  

摘要： Stable synaptic and antidromic electrophysiological recordings were obtained for 10–15 h from identified neurohypophyseal and tuberoinfundibular neurons using an acute explant of rat hypothalamus maintained in vitro through perfusion of the carotid artery with oxygenated artificial media. Synaptic potentials from preoptic and median eminence stimulation were blocked during perfusion with 12 m M Mg⁺⁺-containing solutions. Antidromic and spontaneous action potentials recorded in neurohypophyseal neurons were followed by a transient after-hyperpolarization of 3–10 mV, due primarily to a brief increase in potassium conductance. Evidence favoring the existence of a synaptic recurrent inhibitory pathway was present in records obtained from tuberoinfundibular neurons, but not from neurohypophyseal cells.

关键词： Science   Humanities and Social Sciences   multidisciplinary