The orienting of attention during eye and hand movements: ERP evidence for similar frame of reference but different spatially specific modulations of tactile processing

To investigate which frames of reference guide shifts of attention triggered during eye and hand movement preparation and the specificity of their effects on somatosensory processing, we recorded event-related brain potentials (ERPs) in a Go/Nogo task where a cue indicated to prepare an eye movement toward - or a hand movement with - the left or right hand. Before the imperative stimulus, a tactile probe was presented to one hand. Spatially selective modulations of tactile processing were more sustained for hand than eye movements, indicating stronger attentional modulations for the modality of the effector's sensory organ. Importantly, attentional modulations of somatosensory processing as well as lateralized ERP components in the preparation interval were virtually identical under uncrossed and crossed hands conditions, suggesting that shifts of attention triggered during hand and eye movement preparation are guided by a common external reference frame.     

基于人体微观生理大数据的主动感知临床应用研究

介绍人体微观生理系统及大数据线性规划模型的建立，阐述主动感知临床应用的处理算法，对系统性能进行验证，多位患者的一周内临床应用实验证明该方案在算法能耗、数据精度和临床满意度等方面均表现优秀。     

Finite element evaluation of three methods of stable fixation of condyle base fractures

The surgical treatment of mandibular condyle fractures currently offers several possibilities for stable internal fixation. In this study, a finite element model evaluation was performed of three different methods for osteosynthesis of low subcondylar fractures: (1) two four-hole straight plates, (2) one seven-hole lambda plate, and (3) one four-hole trapezoidal plate. The finite element model evaluation considered a load applied to the first molar on the contralateral side to the fracture. Results showed that, although the three methods are capable of withstanding functional loading, the lambda plate displayed a more homogeneous stress distribution for both osteosynthesis material and bone and may be a better method when single-plate fixation is the option.     

The Auger Effect in biology and medicine. Looking back

Abstract

Purpose: The Auger Effect entered biology in 1967 in a quantal step leading to a burst of experimental work on basic and applied cell- and molecular biology and medicine, which is briefly described.

Conclusion: The relevance of this work again appears in the agenda of the 7th International Symposium on Physical, Cellular, Molecular and Medical Aspects of Auger Processes, held in Jülich, Germany, in 2011.     

Dissected Aorta Repair Through Stent Implantation trial: Canadian results

Objectives

We describe the Canadian results of the Ascyrus Medical Dissection Stent (AMDS), a novel partially uncovered aortic arch hybrid graft implanted antegrade during hypothermic circulatory arrest to promote true lumen expansion and enhance aortic remodeling.