Skin conductance response in Swedish United Nations soldiers exposed to fear-relevant stimuli

The aim of this study was to investigate whether there was a difference in skin conductance response between 2 groups of military personnel when exposed to emotionally neutral and charged stimuli. The 2 groups were a combat experience group (n = 10) with prior experience of emotionally charged war situations and a comparison group (n = 10) with no such experience. Results showed that the comparison group reacted more strongly to exposure to both charged and neutral pictures than did the combat experience group, regardless of exposure time. The results are discussed in terms of emotional numbing and differences in anxiety state between the 2 groups.     

论医疗侵权诉讼中的举证责任倒置规则

医患关系的紧张再次引起了人们对医疗侵权诉讼中举证责任倒置这一规则的关注.在对有关基本知识和人们争议焦点的分析之后,提出了应该在准确理解医疗侵权诉讼中举证责任倒置的适用条件和内容的基础上,结合这一规则设置的目的在当事人之间合理地进行举证责任的分配.     

皮肤缺损与皮瓣修复治疗的分析与思考

皮瓣移植是整形外科治疗皮肤缺损的重要方法.为皮瓣修复治疗更好的临床效果,需要在正确分析病情的基础上,兼顾医疗技术,关注预后,把握皮瓣修复治疗的指征;同时注重疾病的系统和综合治疗,并不断进行理论创新、技术创新,以促进皮瓣外科的发展.唯物辩证法的矛盾论、系统论和发展现对临床治疗具有普遍的指导意义.     

Skin conductance response conditioning with CS intensities equal to and greater than UCS intensity

With .2-sec bursts of white noise as both conditioned stimulus (CS) and unconditioned stimulus (UCS), conditioning of first-interval skin conductance responses was obtained when the intensity of the CS equaled and exceeded that of the UCS. There was no evidence that second-interval response conditioning occurred. Nonspecific response frequencies were also affected by the variations in stimulus intensity, this raising some question about typical controls employed in SCR conditioning. There was some evidence that second interval responses were suppressed by the intense CS values. It was concluded that the existence of simple conditioning with a CS/UCS intensity ratio equal to or greater than unity was contrary to the Pavlovian proposition that a CS must be biologically less salient than the UCS in order for conditioning to occur. It was noted, however, that the suppression of second-interval responses might indicate that anticipatory CRs which are not confounded with orienting reflexes are prevented from exhibiting a conditioning effect when a high CS/UCS intensity ratio is employed.     

The lateralized readiness potential as an on-line measure of central response activation processes

The lateralized readiness potential (LRP) is an electrophysiological indicator of the central activation of motor responses. Procedures for deriving the LRP on the basis of event-related brain potential (ERP) waveforms obtained over the left and right motor cortices are described, and some findings are summarized that show that the LRP is likely to reflect activation processes within the motor cortex. Two experiments investigating spatial S-R compatibility effects are reported that demonstrate that, because of systematic overlaps of motor and nonmotor asymmetries, LRP waveforms derived by the double subtraction method cannot always be interpreted unequivocally in terms of response activation. Such confounds can be detected when LRP waveforms are compared with difference waveforms obtained by the double subtraction method from ERPs elicited at other lateral scalp sites.     

An event-related brain potential substrate of disturbed response monitoring in paranoid schizophrenic patients.

Response monitoring in schizophrenic patients and healthy controls was assessed by measuring performance and event-related brain potentials in the flanker priming task. Three visual-context conditions were construed: Flankers and targets pointed either into the same direction or into different directions. Stimuli without any response assignment were used as flankers in the neutral context condition. The schizophrenic patients were further subdivided into paranoid (n = 19) and nonparanoid (n = 10) patients and compared with healthy controls (n = 18). Performance scores revealed that the flankers induced a similar degree of distraction by visual context in all 3 groups. Although the schizophrenic patients showed normal error correction performance, the error negativity (NE) was significantly reduced in paranoid schizophrenic patients. The attenuation of the NE possibly reflects disturbed response monitoring in these patients.     

A Shamanic Journey under the Wildebeest Skin

Journeys taken in both the outer world as well as the inner world can become experiences of initiation. These adventures speak to us, and when we later decipher their meaning, they give our life purpose, value, and direction. By focusing on the compelling images and symbols that appear repeatedly over one's lifetime, the thread of one's myth can be revealed.

Inspired by an animal scar that appeared on my body, I traveled to Africa and embarked on two safaris. I returned home to process the meaning of my African pilgrimages by way of an inner safari wherein I reflected on the images and insights that came to me during and after these two outer journeys. In this article I include the dynamics of my totem animal (the wildebeest, a herd animal), and what was born out of my dialogues with them in active imaginations when I lay under a wildebeest skin. I came to realize that what I was participating in was a shamanic initiation process. My soul and “bush soul” seemed to have merged together and were lodged in the wildebeest as a symbol for their existence in my life. The integration of animal symbolism, dreams, and active imaginations can lead to an unanticipated renewal. Reflecting psychologically on my travels, I became increasingly aware that these inner and outer peregrinations were essential ingredients in my individuation process. This whole venture evolved into a shamanic endeavor and resulted in a psychological and spiritual rebirth.     

An apparatus for the assessment of prepulse inhibition in the frog

A system for studying prepulse inhibition in the leopard frog is described herein. It entails a modification of an apparatus developed almost a century ago, by Yerkes, for his investigations of hearing in the frog. With the present system, a frog is restrained in a cylindrical vessel (constructed from a 35-mm film canister), and the canister is positioned in the apparatus so that the animal’s legs hang downward. A miniature solenoid is used to deliver a startle eliciting tap to the frog’s head, and the resulting leg movement is detected by an optical densitometer. In addition to providing a convenient way to restrain frogs, our system enabled us to, in part, replicate Yerkes’s basic procedures with these subjects. As did Yerkes, we found that an acoustic signal just prior to a tap on a frog’s head inhibits the leg movement that would otherwise be elicited.     

Skin potential activity in rats, cats, and primates (including man): a phylogenetic point of view.

With rats, cats, nonhuman primates, and humans serving as subjects, skin potential activity was measured under waking conditions. In good agreement with the findings of previous workers, skin potential response waveform was always monophasic negative in rats and cats, but in humans it took three forms. By contrast, it was always monophasic positive in simian nonhuman primates, although prosimiae gave monophasic negative waves. A skin potential level-skin potential response relationship could not be observed in any subject except humans. From these results, an attempt was made to relate skin potential activity to the peripheral mechanism involved in these species on the basis of a phylogenetic point of view.     

Skin Bleaching and the Prestige Complexion of Sexual Attraction

This article focuses on the sexual attraction motive for skin bleaching in Jamaica. Some captive Africans on plantations in Jamaica altered their complexion. These Africans modeled the British in the colony who bleached their skin to protect the “superior,” “sexy,” and ideal white skin from the “impurities” of interracial sex and the tropical climate. The beauty and sexual attraction accorded to light skin was also evident in skin bleaching newspaper ads in the 1950s. The ads told women that acquiring light complexion through skin bleaching would make them sexually attractive to men. The persistence of colorism and its most blatant expression—skin bleaching—is also evident in contemporary Jamaica as expressed in some dancehall songs which praise skin bleachers, and the explanatory narratives of skin bleachers that bleaching makes them pretty and sexually attractive to potential spouses. Similar themes are reflected in the criticism that the browning Dancehall Queen Carlene was deemed sexually attractive and choreographically talented only because of her brown physicality. Some spouses request that their partner acquire the bleached physicality because they find it sexually attractive similar to many male clients in “massage parlors” who only request female sex workers who bleach their skin.     

The Effect of Adrenalin on the Apparent Resistance of the Skin

Blind students showed significant differences from their sighted counterparts in assigning gender to 17 commonly used words out of 50. Language seems to help condition perception, and persons who are deprived of vision seem to have different interpretations concerning the meaning of words in the language.     

Changes in Skin Potentials During the Psychogalvanic Reflex

Researchers have shown that working memory is related to a variety of high-level cognitive processes. However, the results of recent research have suggested that may be because of its role in attentional control. In the present experiment, the authors investigated that hypothesis by using an attentional interference task with musical stimuli. Listeners were asked to monitor one ear for either a clarinet or violin tone and to ignore any information in the other ear. On some of the trials, they heard only one tone and on other trials, either the same instrument in both ears or different instruments. Individual differences were measured in working memory and musical experience. The results showed more attentional interference in the different-instrument condition for participants with lower working memory scores, which suggested that working memory involves the ability to control attention to inhibit irrelevant information.