39 research outputs found

    Patient Trust and Resistance towards Patient Portals

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    Health information technologies (HITs) as facilitators of chronic disease self-management remains an ongoing topic for information system researchers. This research addresses a gap in knowledge surrounding patient trust and resistance towards using these technologies, specifically patient portals. The method used to accomplish this study is through the dispersion of a quantitative survey to participants in Ontario, Canada. This survey focused on questions related to the four variables that have been identified through the literature to be important in determining patient resistance of HITs. The results indicate the importance of patient trust in mitigating their resistance to using these technologies

    Jealousy in dogs? Evidence from brain imaging

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    Domestic dogs are highly social and have been shown to be sensitive not only to the actions of humans and other dogs but to the interactions between them. We used the C-BARQ scale to estimate dogs’ aggressiveness, and we used noninvasive brain imaging (fMRI) to measure activity in their amygdala (an area involved in aggression). More aggressive dogs had more amygdala activation data while watching their caregiver give food to a realistic fake dog than when they put the food in a bucket. This may have some similarity to human jealousy, adding to a growing body of evidence that differences in specific brain activities correlate with differences in canine temperament. The amygdala response habituates when an interaction is observed repeatedly, suggesting that repeated exposures may be a useful behavioral intervention with potentially aggressive dogs

    Guts & Glory H. pylori: Cause of Peptic Ulcer

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    Due to the 1983 discovery of H. pylori bacteria as the leading cause of peptic ulcers, the understanding of the disease dramatically changed. We now know that stress and spicy foods are not the leading causes of peptic ulcers. Symptoms including acute abdominal pain, vomiting of blood, and weight loss are characteristic of peptic ulcers. Ulcers form because of the inflammation caused by H. pylori leading to sensitivity of gastric cells to the acid secreted by the infected patient’s stomach. Although more than half of the world’s population is infected with H. pylori, most people remain asymptomatic. Current research suggests that several bacterial virulence genes such as CagA and VacA, as well as the individual host’s genetic predisposition, are factors that influence progression of disease. The mechanism of H. pylori infection has been recently examined in detail clarifying the morphological changes of the host cell and how this promotes the formation of a peptic ulcer. Present studies to explain the persistence of H. pylori and propose how this bacterium evolved key mechanisms to evade the host’s immune response. Due to the advances in the understanding of peptic ulcers, effective treatments have been proposed to treat and eliminate this disease

    Awake fMRI Reveals Brain Regions for Novel Word Detection in Dogs

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    How do dogs understand human words? At a basic level, understanding would require the discrimination of words from non-words. To determine the mechanisms of such a discrimination, we trained 12 dogs to retrieve two objects based on object names, then probed the neural basis for these auditory discriminations using awake-fMRI. We compared the neural response to these trained words relative to “oddball” pseudowords the dogs had not heard before. Consistent with novelty detection, we found greater activation for pseudowords relative to trained words bilaterally in the parietotemporal cortex. To probe the neural basis for representations of trained words, searchlight multivoxel pattern analysis (MVPA) revealed that a subset of dogs had clusters of informative voxels that discriminated between the two trained words. These clusters included the left temporal cortex and amygdala, left caudate nucleus, and thalamus. These results demonstrate that dogs’ processing of human words utilizes basic processes like novelty detection, and for some dogs, may also include auditory and hedonic representations

    Gender essentialism and occupational segregation in insolvency practice

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    Advances towards egalitarianism in professional recruitment may be offset by processes of occupational re-segregation. Drawing on gender theory this paper investigates horizontal segregation in the UK insolvency profession, as revealed through the lived experiences of female and male practitioners. It is shown that horizontal segregation pervades at different levels of practice and is undergirded by various elements of gender essentialism. Physical essentialism explains why insolvency practice has been traditionally gendered male. Interactional essentialism combines with the management of work-life balance to define the subfields of corporate and personal insolvency as masculine and feminine respectively. Gender essentialist assumptions also pervade the distribution of roles and the allocation of work tasks. Networks are identified as arenas for the reproduction and perpetuation of occupational segregation. The findings indicate the continuing potency of gender in everyday professional life, the limitations of diversity-orientated policies and the complexities of formulating transformative agendas

    Causal structures and causal boundaries

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    We give an up-to-date perspective with a general overview of the theory of causal properties, the derived causal structures, their classification and applications, and the definition and construction of causal boundaries and of causal symmetries, mostly for Lorentzian manifolds but also in more abstract settings.Comment: Final version. To appear in Classical and Quantum Gravit

    Fast neural learning in dogs: A multimodal sensory fMRI study

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    Abstract Dogs may follow their nose, but they learn associations to many types of sensory stimuli. Are some modalities learned better than others? We used awake fMRI in 19 dogs over a series of three experiments to measure reward-related learning of visual, olfactory, and verbal stimuli. Neurobiological learning curves were generated for individual dogs by measuring activation over time within three regions of interest: the caudate nucleus, amygdala, and parietotemporal cortex. The learning curves showed that dogs formed stimulus-reward associations in as little as 22 trials. Consistent with neuroimaging studies of associative learning, the caudate showed a main effect for reward-related stimuli, but not a significant interaction with modality. However, there were significant differences in the time courses, suggesting that although multiple modalities are represented in the caudate, the rates of acquisition and habituation are modality-dependent and are potentially gated by their salience in the amygdala. Visual and olfactory modalities resulted in the fastest learning, while verbal stimuli were least effective, suggesting that verbal commands may be the least efficient way to train dogs
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