27 research outputs found

    Visual-to-auditory sensory substitution alters language asymmetry in both sighted novices and experienced visually impaired users

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    Visual-to-auditory sensory substitution devices (SSDs) provide improved access to the visual environment for the visually impaired by converting images into auditory information. Research is lacking on the mechanisms involved in processing data that is perceived through one sensory modality, but directly associated with a source in a different sensory modality. This is important because SSDs that use auditory displays could involve binaural presentation requiring both ear canals, or monaural presentation requiring only one – but which ear would be ideal? SSDs may be similar to reading, as an image (printed word) is converted into sound (when read aloud). Reading, and language more generally, are typically lateralised to the left cerebral hemisphere. Yet, unlike symbolic written language, SSDs convert images to sound based on visuospatial properties, with the right cerebral hemisphere potentially having a role in processing such visuospatial data. Here we investigated whether there is a hemispheric bias in the processing of visual-to-auditory sensory substitution information and whether that varies as a function of experience and visual ability. We assessed the lateralization of auditory processing with two tests: a standard dichotic listening test and a novel dichotic listening test created using the auditory information produced by an SSD, The vOICe. Participants were tested either in the lab or online with the same stimuli. We did not find a hemispheric bias in the processing of visual-to-auditory information in visually impaired, experienced vOICe users. Further, we did not find any difference between visually impaired, experienced vOICe users and sighted novices in the hemispheric lateralization of visual-to-auditory information processing. Although standard dichotic listening is lateralised to the left hemisphere, the auditory processing of images in SSDs is bilateral, possibly due to the increased influence of right hemisphere processing. Auditory SSDs might therefore be equally effective with presentation to either ear if a monaural, rather than binaural, presentation were necessary

    From fossils to mind

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    Fossil endocasts record features of brains from the past: size, shape, vasculature, and gyrification. These data, alongside experimental and comparative evidence, are needed to resolve questions about brain energetics, cognitive specializations, and developmental plasticity. Through the application of interdisciplinary techniques to the fossil record, paleoneurology has been leading major innovations. Neuroimaging is shedding light on fossil brain organization and behaviors. Inferences about the development and physiology of the brains of extinct species can be experimentally investigated through brain organoids and transgenic models based on ancient DNA. Phylogenetic comparative methods integrate data across species and associate genotypes to phenotypes, and brains to behaviors. Meanwhile, fossil and archeological discoveries continuously contribute new knowledge. Through cooperation, the scientific community can accelerate knowledge acquisition. Sharing digitized museum collections improves the availability of rare fossils and artifacts. Comparative neuroanatomical data are available through online databases, along with tools for their measurement and analysis. In the context of these advances, the paleoneurological record provides ample opportunity for future research. Biomedical and ecological sciences can benefit from paleoneurology's approach to understanding the mind as well as its novel research pipelines that establish connections between neuroanatomy, genes and behavior

    An Open Resource for Non-human Primate Imaging.

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    Non-human primate neuroimaging is a rapidly growing area of research that promises to transform and scale translational and cross-species comparative neuroscience. Unfortunately, the technological and methodological advances of the past two decades have outpaced the accrual of data, which is particularly challenging given the relatively few centers that have the necessary facilities and capabilities. The PRIMatE Data Exchange (PRIME-DE) addresses this challenge by aggregating independently acquired non-human primate magnetic resonance imaging (MRI) datasets and openly sharing them via the International Neuroimaging Data-sharing Initiative (INDI). Here, we present the rationale, design, and procedures for the PRIME-DE consortium, as well as the initial release, consisting of 25 independent data collections aggregated across 22 sites (total = 217 non-human primates). We also outline the unique pitfalls and challenges that should be considered in the analysis of non-human primate MRI datasets, including providing automated quality assessment of the contributed datasets

    Certain Financial Problems the Small and Medium Enterprises Face in the Countries of the European Economic Area (EEA)

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    In issue three of 2002 of Economic Studies the author defined three assumptions, which in general assert that under the conditions of information asymmetry the small and medium enterprises (SMEs) are affected in a relatively greater degree by the problems of financing. In addition, according to one of the assumptions, there is a negative relationship between the factors “age” and “size” of the enterprises and the problems, while the influence of the “growth” factor can be controversial. In the present paper the author gives proof to his hypotheses concerning the problems of financing of the SMEs in the countries of the EEA. He also analyses the influence of the above- mentioned factors (age, size and growth) on the problems of financing of the starting and high technology businesses, as well as on the smaller exporters.

    Definitions of Small and Medium Enterprise in Global Economics and the European Union – Some Theoretical and Practical Aspects

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    Examined are the main criteria which are used to define small and medium enterprises (SME) in different countries. They are subdivided into quantitative and qualitative. To the quantitative refer: number of employees, sales turnover, balance number, size of assets and market share. In the analysis of the main qualitative characteristics of small business a confirmation about them is sought in the works of researchers or studies of a broad time perimeter – from Schumpeter, Kondratieff ant the Bolton Committee to the contemporary research of the European Commission. Conclusions have been reached about common and specific peculiarities typical for the different definitions. Some conclusions have been made about the changes in the contemporary European common view on small and medium enterprises.

    The Impact of Information Asymmetry on Financial Markets and Hypotheses for Rationing of Assets to Finance for the Small and Medium-Sized Enterprises

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    The aim of the paper is to draw up hypotheses that intend to answer the question why the small and medium sized enterprises are of greater degree affected by the problems of financing than the larger- scale companies. The author makes his assumptions on the basis of some fundamental issues of representatives of the school of the new institutional economists on the problem of information asymmetry like: O. Williamson, Arrow, Akerlof, Stiglitz and Weiss, Bester, Besanko and some others. The analysis also concerns some peculiar features of the small businesses that makes them in a greater degree affected by the uneven distribution of information and hence, in a greater degree affected by the problems of financing.

    orlinst/Carnivores-ext: Extinct Pleistocene Carnivores Burned More Energy Supplement

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    <p>The repository contains all the used data, code and phylogenetic trees used to conduct the research in the manuscript.</p&gt
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