Evaluating the Acute Contributions of Dopaminergic Replacement to Gait With Obstacles in Parkinson's Disease

The influence of dopaminergic replacement (DR) on gait in people with Parkinson's disease (PD) is well documented. However, little is known about the acute effects of dopamine on more complex locomotor tasks that require visual guidance to avoid obstacles during gait. The authors investigated the influence of DR on locomotor behavior in a task where movement planning and control might be challenged by the height of the obstacle. The PD group included patients diagnosed with idiopathic PD (n = 12), as well as healthy controls (n = 12). Patients walked and stepped over obstacles of different heights before (OFF) and after (ON) levodopa intake. Spatial adjustments were not modulated by DR, but the step time to perform these anticipatory gait adjustments was longer only in PD-OFF (compared with healthy controls) when approaching the highest obstacle, but not PD-ON. During the crossing phase, trail limb toe clearance of PD patients was shorter than healthy controls only during the OFF state. ON-OFF comparisons were significantly different only for the time to reach the lead foot clearance over the highest obstacle. In summary, DR partially improved movement slowness but did not directly affect movement amplitude of lower limb regulation in this gait task.     

大转子延长截骨在THR术后感染一期翻修中的临床应用

评价大转子延长截骨并行单纯钢丝捆扎在人工髋关节置换（THR）术后感染一期翻修中的作用及对翻修假体的影响.选取2010年10月~2013年10月期间30例髋关节置换术后假体感染性松动并行一期翻修术的患者,随访时间（34.8＆#177;13.2）月,对患者手术时间、截骨长度和愈合时间、术前术后Harris评分及术后感染控制情况进行统计.30例患者髋关节术后评分明显高于术前,手术时间为（132.4＆#177;23.6）min,经大转子截骨长度为（11.4＆#177;2.6）cm,截骨愈合时间（3.8＆#177;1.3）个月.术后感染未见复发.因此THR术后感染的一期翻修术中应用大转子延长截骨方法能缩短手术时间,髋关节功能较术前明显改善.     

‘Who am I?’

The dreams and existential questions of those, who came into being in order to replace a dead person, pivot around a central cry: ‘Who am I?’ If conceived, born or designated as a replacement child, such an individual may suffer—even as an adult—from a rarely recognized unconscious confusion of identity, compounded by grief and survivors’ guilt. From before the child is born, the archetypal forces of death and life are joined in a fateful constellation; the soul of the replacement child bears the shadow of death from the very beginning of life. Hope for the replacement child lies in an emergence of true self as soul recreates original life. Analysis can help the replacement child experience a ‘rebirth into true life’, not as ‘the one who returned’, but as a psychologically newborn individual; the path of individuation countering the replacement child‘s identification with the dead. Jungian analysis offers unique concepts for understanding and healing the replacement child; C.G. Jung himself was born after two stillborn babies and an infant that lived only five days.     

人工全膝关节置换术后持续被动运动的早期临床效果研究

探讨持续被动运动用于人工全膝关节置换术后的早期疗效。自2008年至2010年我科共完成人工全膝关节置换术36例（43膝）,将全部病例随机分为2组,A组术后单纯应用物理治疗及自身锻炼,B组采用持续被动锻炼加主动锻炼。观察术后12小时、24小时引流量,术后1周、2周膝关节主动活动范围,切口拆线时间,患者平均住院时间。术后2...     

E pluribus unum and civil harmony at election time

One way to formulate the task of the public theologian at election time is to interpret America's motto, e pluribus unum (out of many, one). Civility both presumes oneness while promoting oneness. After four years of ceaseless divisiveness from the White House, America needs political leadership that promotes a sense of belonging that includes persons of all races, ethnicities, economic classes, ages, genders, and country of origin. The public theologian combats xenophobia and the fear of replacement by demanding police reform, establishing a comprehensive national health delivery system, and comforting those who are anxious about their future in the unum.     

Exploration of anomalous perceptual experiences in migraine between attacks using the Cardiff Anomalous Perceptions Scale

Distortions in sensory experiences that precede a migraine attack have been extensively documented, the most well-known being the visual aura. Distortions in the experience of other senses are also reported as part of an aura, albeit less frequently, together with changes in the perception or ownership of the body or body parts. There are many examples of differences in aspects of visual perception between migraine and control groups, between attacks, but not as much on unusual experiences involving other senses, the sense of the body or the experience of the environment. Seventy-seven migraine (33 with aura) and 74 control participants took part. Anomalous perceptions were experienced by both migraine and control groups, but more with migraine experienced them and rated them as more distressing, intrusive and frequent. Associations with reports of visual triggers of migraine and visual discomfort are presented. This study is the first to show relationships between these factors.     

Revising,Correcting, and Transferring Genes

Abstract

The distinction between germline and somatic gene editing is fundamental to the ethics of human gene editing. Multiple conferences of scientists, ethicists, and policymakers, and multiple professional bodies, have called for moratoria on germline gene editing, and editing of human germline cells is considered to be an ethical “red line” that either never should be crossed, or should only be crossed with great caution and care. However, as research on germline gene editing has progressed, it has become clear that not all germline interventions are alike, and that these differences make a significant moral difference, when it comes to ethical questions about research, regulation, clinical application, and medical justification. In this paper, I argue that, rather than lumping all germline interventions together, we should distinguish between revising, correcting, and transferring genes, and I assess the consequences of this move for the ethics of gene editing.     

The conscious experience of color constancy and neural responses to subliminal deviations – A behavioral and EEG/ERP oddball study

IntroductionColor constancy, a property of conscious color experience, maintains object color appearance across illuminant changes. We investigated the neural correlates of subliminal vs. conscious stimulus deviations of color constancy manipulations.MethodsBehavioral and Oddball EEG/ERP experiments were conducted (n = 20). Psychophysical illuminant variation discrimination thresholds were first estimated, to establish individual perceptual awareness ranges, allowing for simulation of natural daylight spectral and spatial variations on colored surfaces, at different ambiguity levels.ResultsBehavioral results validated illuminant choice. ERPs showed a significant modulation of posterior P1 component specifically for the subliminal global uniform deviation condition, respecting color constancy. Neural correlates of conscious percepts were identified at posterior N2-P3 latencies, parietal (P3b) and frontal regions.ConclusionsWe identified an early subliminal correlate of low-level illuminant change, which reflects automatic unconscious detection of global color constancy deviations. Its suppression under conscious perception is probably due to top-down suppression according to prediction error models.