The role of visual similarity and memory in body model distortions

Several studies have shown that the perception of one's own hand size is distorted in proprioceptive localization tasks. It has been suggested that those distortions mirror somatosensory anisotropies. Recent research suggests that non-corporeal items also show some spatial distortions. In order to investigate the psychological processes underlying the localization task, we investigated the influences of visual similarity and memory on distortions observed on corporeal and non-corporeal items. In experiment 1, participants indicated the location of landmarks on: their own hand, a rubber hand (rated as most similar to the real hand), and a rake (rated as least similar to the real hand). Results show no significant differences between rake and rubber hand distortions but both items were significantly less distorted than the hand. Experiment 2 and 3 explored the role of memory in spatial distance judgments of the hand, the rake and the rubber hand. Spatial representations of items measured in experiment 2 and 3 were also distorted but showed the tendency to be smaller than in localization tasks. While memory and visual similarity seem to contribute to explain qualitative similarities in distortions between the hand and non-corporeal items, those factors cannot explain the larger magnitude observed in hand distortions

UroMark-a urinary biomarker assay for the detection of bladder cancer.

BACKGROUND: Bladder cancer (BC) is one of the most common cancers in the western world and ranks as the most expensive to manage, due to the need for cystoscopic examination. BC shows frequent changes in DNA methylation, and several studies have shown the potential utility of urinary biomarkers by detecting epigenetic alterations in voided urine. The aim of this study is to develop a targeted bisulfite next-generation sequencing assay to diagnose BC from urine with high sensitivity and specificity. RESULTS: We defined a 150 CpG loci biomarker panel from a cohort of 86 muscle-invasive bladder cancers and 30 normal urothelium. Based on this panel, we developed the UroMark assay, a next-generation bisulphite sequencing assay and analysis pipeline for the detection of bladder cancer from urinary sediment DNA. The 150 loci UroMark assay was validated in an independent cohort (n = 274, non-cancer (n = 167) and bladder cancer (n = 107)) voided urine samples with an AUC of 97%. The UroMark classifier sensitivity of 98%, specificity of 97% and NPV of 97% for the detection of primary BC was compared to non-BC urine. CONCLUSIONS: Epigenetic urinary biomarkers for detection of BC have the potential to revolutionise the management of this disease. In this proof of concept study, we show the development and utility of a novel high-throughput, next-generation sequencing-based biomarker for the detection of BC-specific epigenetic alterations in urine

El dossier copia/sur: problemas económicos, políticos, e ideológicos del copyright (derecho de autor) en el sur global

In 2005, a group of scholars and activists, mostly from the global South, created the Copy/South Research Group to analyse, criticise, and confront the oppressive nature of current global copyright regimes, such as those defended by the World Intellectual Property Organisation, and similar ones around the globe. In May 2006, 22 of us, including 15 people from the global South, published THE COPY/SOUTH DOSSIER: Issues in the economics, politics, and ideology of copyright in the global South. The aim of the Dossier was to open up a critical and radical debate on the real impact of copyright laws and how they affect the daily lives of people living in more than 150 developing countries of the global South. We also highlighted issues that are not unique to the Global South, but also affect both sides of the North-South divide. This publication of more than 50 articles was addressed to researchers, educators, librarians, musicians, activists, organizations concerned about access to knowledge, and all of those who want to learn more about the oppressive global role of copyright laws and, in particular, their largely negative role in the developing countries of the global South. Given the democratic objectives of the Copy/South Research Group, the Dossier was not restricted by copyright. Therefore, it has been accessed openly and freely in both electronic and paper formats by thousands of readers from around the world in English. But English is not spoken by all citizens in the global South. With this in mind, the entire 200-page Dossier was translated into Spanish in late 2007 by an enthusiastic team of voluntary translators from Argentina, Bolivia, Cuba, Mexico, Spain, and Venezuela. As for this Spanish version, made with the support of the Intellectual Property Automous Service (SAPI), from the Bolivarian Republic of Venezuela, we must acknowledge the prior SAPI's General Director Eduardo Samán for promoting the making of this translation. Besides the general revision of Gerardo Cárdenas and his labor as main translator, some other volunteers translated or revised important sections of the Spanish edition: María Jesús Morillo (Spain), Oscar Pérez Peña and Gilda Gil (Cuba), Edgardo Civallero (Argentina) and Rafael Carreño (Venezuela), who coordinated the process of translation in 2007. Also it is worth to mention the additional colaboration of Ana Lía López (Bolivia), Richard Castro, Rafael Bellota and Carmen Chirinos (Venezuela), Zapopan Muela and Gonzalo Lara (Mexico), and Lilian Álvarez (Cuba). But what is still more extraordinary about this Spanish translation is that it was completely coordinated and edited by the Servicio Autonomo de la Propiedad Intelectual (SAPI) of the democratic government of the Venezuelan Bolivarian Republic. The Dossier provides “useful material to introduce this topic to teachers and students” and does a good job of “summarizing a complex and conflicting situation” for developing countries, Jumersi La Rosa, SAPI’s new director, said last week in announcing the release of the Spanish edition. She has written a special new introduction for the Spanish-language edition. The Copy South Research Group is very pleased that the radical message of resistance found in the Dossier can now be read by thousands of Spanish-language speakers who are questioning the current copyright regime and who hopefully will be ignited by the ideas in the Dossier to take up the fight against oppressive regimes based on copyright. You can get a copy of the Dossier in Spanish and English by downloading it, free of charge, at http://www.copysouth.org . We also still have a limited number of printed and bound copies of the English-language version of the Dossier. If you would to be mailed a copy of the English-language version, which contains eight posters, send us an e-mail ([email protected]) and include your full postal details. COPY/SOUTH RESEARCH GROUP, 28 April 2008

The effect of social context on the use of visual information

Social context modulates action kinematics. Less is known about whether social context also affects the use of task relevant visual information. We tested this hypothesis by examining whether the instruction to play table tennis competitively or cooperatively affected the kind of visual cues necessary for successful table tennis performance. In two experiments, participants played table tennis in a dark room with only the ball, net, and table visible. Visual information about both players’ actions was manipulated by means of self-glowing markers. We recorded the number of successful passes for each player individually. The results showed that participants’ performance increased when their own body was rendered visible in both the cooperative and the competitive condition. However, social context modulated the importance of different sources of visual information about the other player. In the cooperative condition, seeing the other player’s racket had the largest effects on performance increase, whereas in the competitive condition, seeing the other player’s body resulted in the largest performance increase. These results suggest that social context selectively modulates the use of visual information about others’ actions in social interactions

The exposure of the hybrid detector of the Pierre Auger Observatory

The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The "hybrid" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is crucial for an accurate evaluation of the exposure. We discuss the relevance of monitoring data collected during operations, such as the status of the fluorescence detector, background light and atmospheric conditions, that are used in both simulation and reconstruction.Comment: Paper accepted by Astroparticle Physic

The Pierre Auger Observatory III: Other Astrophysical Observations

Astrophysical observations of ultra-high-energy cosmic rays with the Pierre Auger ObservatoryComment: Contributions to the 32nd International Cosmic Ray Conference, Beijing, China, August 201

Highlights from the Pierre Auger Observatory

The Pierre Auger Observatory is the world's largest cosmic ray observatory. Our current exposure reaches nearly 40,000 km$^2$ str and provides us with an unprecedented quality data set. The performance and stability of the detectors and their enhancements are described. Data analyses have led to a number of major breakthroughs. Among these we discuss the energy spectrum and the searches for large-scale anisotropies. We present analyses of our X$_{max}$ data and show how it can be interpreted in terms of mass composition. We also describe some new analyses that extract mass sensitive parameters from the 100% duty cycle SD data. A coherent interpretation of all these recent results opens new directions. The consequences regarding the cosmic ray composition and the properties of UHECR sources are briefly discussed.Comment: 9 pages, 12 figures, talk given at the 33rd International Cosmic Ray Conference, Rio de Janeiro 201

Measurement of the Depth of Maximum of Extensive Air Showers above 10^18 eV

We describe the measurement of the depth of maximum, Xmax, of the longitudinal development of air showers induced by cosmic rays. Almost four thousand events above 10^18 eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence with at least one surface detector station are selected for the analysis. The average shower maximum was found to evolve with energy at a rate of (106 +35/-21) g/cm^2/decade below 10^(18.24 +/- 0.05) eV and (24 +/- 3) g/cm^2/decade above this energy. The measured shower-to-shower fluctuations decrease from about 55 to 26 g/cm^2. The interpretation of these results in terms of the cosmic ray mass composition is briefly discussed.Comment: Accepted for publication by PR

A search for point sources of EeV photons

Measurements of air showers made using the hybrid technique developed with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for point sources of EeV photons anywhere in the exposed sky. A multivariate analysis reduces the background of hadronic cosmic rays. The search is sensitive to a declination band from -85{\deg} to +20{\deg}, in an energy range from 10^17.3 eV to 10^18.5 eV. No photon point source has been detected. An upper limit on the photon flux has been derived for every direction. The mean value of the energy flux limit that results from this, assuming a photon spectral index of -2, is 0.06 eV cm^-2 s^-1, and no celestial direction exceeds 0.25 eV cm^-2 s^-1. These upper limits constrain scenarios in which EeV cosmic ray protons are emitted by non-transient sources in the Galaxy.Comment: 28 pages, 10 figures, accepted for publication in The Astrophysical Journa