The relationship between women's subjective and physiological sexual arousal

Previous literature presents discordant results on the relationship between physiological and subjective sexual arousal in women. In this study, the use of hierarchical linear modeling (HLM) revealed a significant concordance between continuous measures of physiological and subjective sexual arousal as assessed during exposure to erotic stimuli in a laboratory setting. We propose that past studies that have found little or no association between the two measures may have been in part limited by the methodology and statistical analyses employed.     

蛙类肠系膜内微小动脉的压力检测

根据Wiederhielm的阻抗平衡压力检测原理,设计了一个改进的伺服零微血管测压系统。利用该系统检测了蟾蜍及蛙肠系膜内微小动脉的压力、获得了各管径级的压力和脉压的参数,并观察了药物的作用,探讨了微动脉内压力的波动特性以及应激情况下压力的骤变式与脉动式的交替,为微循环研究提供一些有价值的现象。     

Septal unit activity and hippocampal EEG during the sleep-wakefulness cycle of the rat

The functional relationship between septal unit activity and hippocampal EEG was studied during the sleep-wakefulness cycle in chronically implanted unrestrained rats. Results were statistically analyzed in order to obtain the time interval and auto and crosscorrelation histograms. During REM sleep and restless wakefulness the hippocampal EEG showed a theta rhythm of 4–8 cps and the septal unit activity was characterized by the presence of rhythmic bursts with a frequency in every single instance similar to that of the hippocampus. The septal units showed a bimodal time interval histogram. Their autocorrelation histogram exhibited a sinusoidal pattern of decreasing amplitude. The crosscorrelation histogram of septal units and the hippocampal EEG also showed a sinusoidal pattern suggestive of the functional relationship between both neural structures. During slow wave sleep and quiet wakefulness there was a disappearance of the hippocampal theta rhythm and rhythmic septal unit bursts. The second mode was missing in the time interval histogram and the auto and crosscorrelation histograms showed an irregular pattern. It is concluded that medial septal nucleus and hippocampal temporal patterns of activity are similar during REM sleep and restless wakefulness.     

THE INTERACTION OF RESPONSES IN THE BRAIN TO SEMANTIC STIMULI

Long time-constant EEG recording during paired stimuli has led to the discovery of the contingent negative variation or expectancy wave (Walter, 1964). This effect is produced when a conditional stimulus signals that an imperative stimulus demanding action, decision, or attention will follow at a short, constant time interval. Symbolic and meaningful stimuli were presented to subjects tachistoscopically, and the evoked responses in the brain were electronically averaged. The cerebral evoked responses to such psychological stimuli are more complex than to flashes. A slow negative DC potential shift (CNV) was seen during the interval between an auditory ready signal and the visual exposure if recognition of the stimulus was required, or if it was interesting. Following the visual exposure, a slow positive DC shift occurred. The method has been developed to study the brain responses to psychological stimuli. The amplitude of the responses relates to the information content and subjective factors rather than to the physical strength of the stimulus.     

冲击波致伤作用实验研究进展

原发冲击伤是爆炸产生的冲击波直接作用于生物体而引起的。各种生物激波管和其它冲击波发生装置的研制大大促进了冲击波致伤作用的实验研究的开展。通过将多种动物、离体器官以及培养的细胞暴露于冲击波,获得了大量的原发冲击伤实验研究结果。作者在简述冲击波的基本物理学特征的基础上,着重概括了生物激波管研制和原发冲击伤实验研究方法及其主要进展。     

Relationship between frequency and amplitude of myocardial contractions in rats adapted to heat

After preliminary adaptation of rats to heat (for 3 h daily at 35°C for 1 month) the amplitude of contractions of the isolated papillary muscles from the left ventricle at 28°C at high frequency was higher than in control animals. This difference persisted at 36°C and disappeared at 25°C. It is postulated that adaptation to heat leaves a definite structural imprint in heart muscle cells.Laboratory of Pathophysiology of the Heart, Institute of General Pathology and Pathological Physiology, Academy of Medical Sciences of the USSR, Moscow. Institute of Physiology and Experimental Pathology of the Arid Zone, Academy of Sciences of the Turkmenian USSR, Ashkhabad. (Presented by Academician of the Academy of Medical Sciences of the USSR A. M. Chernukh.) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 82, No. 10, pp. 1168–1170, October, 1976.     

冲击伤肺肋面的平行出血条纹

本文采用部分肋骨切除术,切除15只家兔双侧5、6、7、8肋中任一肋距脊柱约2cm处一段长约1cm的肋骨。一周后对受冲击波致伤的肺肋面的出血情况进行解剖观察,发现肺肋面的出血条纹呈“工”字形,从而为冲击伤肺肋面的平行出血条纹是肋间压痕这一观点找到了直接的实验证据。     

利用脉搏波特征参数连续测量血压的方法研究

通过研究血压与脉搏波特征参数的关系，提出了一个选择多个与血压相关的脉搏波特征参数,通过回归分析建立适合不同人的特征方程，进行血压的连续测量的新方法，为了验证测量结果的准确性；研制了张力计。实验结果表明：该方法具有较高的测量精度，可以应用于临床危重病人的血压监护和一般医学研究中，经过进一步地改进和完善后可应用于载人航天和日常动态环境。     

超短波治疗慢性肺源性心脏病患者的初步探讨

目的:探讨超短波对慢性肺心病CCP患者的临床应用价值。方法:急性发作期CCP患者87例分为超短波治疗组45例和对照组42例,治疗组在常规治疗的基础上给予超短波治疗,对照组行常规治疗。治疗前后分别测定两组患者血浆中血管内皮生长因子VEGF、内皮素(ET-1)含量,动脉血氧分压(PaO2)和平均肺动脉压(mPAP)水平。结果:与对照组比较治疗组治疗后PaO2显著升高(P<0.01),VEGF、ET-1、mPAP明显降低(P<0.01)。VEGF、ET-1与PaO2呈负相关(P<0.01)、与mPAP呈正相关(P<0.01)。结论:超短波可以通过降低肺动脉高压对CCP患者起治疗作用。     

ESWL实际焦点位置的理论和数值分析

从理论和数值模拟两个方面分析了ESWL中的非线性的动力学焦点和实际焦点的位置 ,给出三种典型的动力学焦点的数值结果 ,说明非线性动力学焦点和实际焦点一般不是几何焦点 ,指出正确确定实际焦点在ESWL技术中的重要性。