关键词： 人   痛阈   神经生理学  

摘要： 疼痛是正常感觉的感性体验。通常描述由什么所引起的感觉没有问题,例如,不同的表面或压力。然而难于描述疼痛刺激的特性。人在前额部接受持续一定时间的辐射热的刺激而感到疼痛,这种疼痛可被描述成“痒”或“针刺样痛”或“有东西烧我前额”,无人给以精确的描述,但总是有疼痛的报道。

关键词： 椎管狭窄   软骨发育不全   第一颈椎   组织变性   软骨内骨化   脊柱关节   临床进展   神经生理学   手术指征  

摘要： 在软骨发育不全的病人中椎管狭窄很常见,它继发于软骨内骨化异常及骨组织变性,前者对于椎体结构的形成至关重要。颈椎管狭窄更常见(绝大多数涉及第一颈椎及颅脊柱关节)。

关键词： RESPIRATION   NEUROPHYSIOLOGY   PHRENIC NERVE   DIAPHRAGM   NEUROMUSCULAR  

摘要： Disorders of nerve and muscle are frequent causes of respiratory insufficiency, but current methods often fail to adequately assess the problem. Phrenic nerve conduction and needle electromyography of the diaphragm are of great assistance in identifying the nature and site of the disorder: the various disturbances of central drive, axonal or demyelinating neuropathies of the phrenic nerves, and certain myopathies. These studies may be performed on adults, children, or infants, and in outpatient, general ward, or critical care settings. It is hoped these techniques will stimulate further developments in the field.

关键词： 作物   植物生理学  

ISBN: (纸本)7109024849

摘要： 书名原文:Physiology of crop plants:据美国依阿华州立大学出版社1985年版译出:本书论述了作物冠层的碳素固定、运输和分配、水分关系、矿质营养,植物生长调节,开花与结实等问题。

关键词： 长时程增强   学习   记忆   神经生理学  

摘要： 位于突触后膜上的NMDA受体通道在一定条件下的开放,使胞外钙离子内流,继而激活一系列的生化反应,是长时程增强(LTP)产生的主要原因。LTP具有联合性、协同性、特异性、长时性的特点,这些特点引导人们从不同的侧面对LTP与学习记忆的关系进行了大量的研究,从结果可以看出LTP与某些学习记忆过程可能存在一定的相关性,但并不能将它们等价;也有资料表明,LTP可能是一种记忆的痕迹。

关键词： 诱发电位   子波变换   神经生理学  

摘要： 在临床神经生理学中,一个具有挑战性的研究课题是从EEG背景中提取诱发电位的技术问题。从头皮上获取的诱发电位信号要比EEG信号弱得多。通常用于评估诱发电位的方法是将多次刺激的结果进行叠加平均处理。

关键词： 神经生理学   免疫   内分泌学  

摘要： 当代自然科学的飞速发展,使人们对生命现象的认识不断深化和丰富,同时,从不同角度出发,围绕机体各个方面进行研究的生物医学各分支学科,则不可避免地发生广泛的交叉和重组,繁衍出崭新的边缘学科或跨学科。神经免疫内分泌学(Neuroimmunoendocrinology)在近年的崛起即是一典型事例。该学科集中探讨神经。

关键词： RETINAL DEGENERATION   BLINDNESS   CAT   RETINA   RECEPTIVE FIELDS  

摘要： Receptive fields of ganglion cells have been studied in cats possessing a chronic, arrested lesion of central retinal degeneration. Lesions were characterized by an ophthalmoscopically sharp border separating apparently normal retina from the region of the lesion. Under direct ophthalmoscopic guidance, a succession of recordings was obtained from ganglion cells having cell bodies at various positions relative to the lesion. Cells located more than 1 deg outside the ophthalmoscopic border had normal visual sensitivity as assessed by area-threshold experiments. Inside the lesion cells within 1 deg of the border had reduced sensitivity which often precluded functional classification by the usual visual tests. Ganglion cells located more than 1 deg inside the border of large lesions were blind and some had abnormal patterns of maintained discharge of action potentials. Nevertheless, the antidromic latencies of these blind cells fell into the familiar conduction groups (Tl/T2/T3). Receptive-field maps of cells near the border of the lesion often appeared truncated, with the missing portion of the field covered by the lesion. These observations were consistent with the abnormal form of area-threshold curves. Altlhough the responsiveness of cells near the lesion was abnormally low for grating stimuli, cutoff spatial frequency and orientation bias of these cells were within normal limits.