Objective: Listening effort (LE) varies as a function of listening demands, motivation and resource availability, among other things. Motivation is posited to have a greater influence on listening effort under high, compared to low, listening demands.
Methods: To test this prediction, we manipulated the listening demands of a speech recognition task using tone vocoders to create moderate and high listening demand conditions.
Introduction: Delays in inpatient colonoscopy are commonly caused by inadequate bowel preparation and result in increased hospital length of stay (LOS) and healthcare costs. Low-volume bowel preparation (LV-BP; sodium sulfate, potassium sulfate, and magnesium sulfate ) has been shown to improve outpatient bowel preparation quality compared with standard high-volume bowel preparations (HV-BP; polyethylene glycol ). However, its efficacy in hospitalized patients has not been well-studied.
View Article and Find Full Text PDFMotivation influences the amount of listening effort (LE) exerted or experienced under challenging conditions, such as in high-noise environments. This systematic review and meta-analysis is the first to quantify the effects of motivation on LE. The review was pre-registered in PROSPERO, and performed in accordance with PRISMA guidelines.
View Article and Find Full Text PDFConscious sedation is routinely administered for colonoscopy but is associated with risks and inconveniences. We sought to determine whether virtual reality (VR) may be a feasible alternative. Twenty-seven individuals scheduled for screening/surveillance colonoscopy participated.
View Article and Find Full Text PDFObjectives: To investigate the effects of listening demands and motivation on listening effort (LE) in a novel speech recognition task.
Design: We manipulated listening demands and motivation using vocoded speech and financial reward, respectively, and measured task performance (correct response rate) and indices of LE (response times (RTs), subjective ratings of LE and likelihood of giving up). Effects of inter-individual differences in cognitive skills and personality on task performance and LE were also assessed within the context of the Cognitive Energetics Theory (CET).
Objective: Pupillometry is sensitive to cognitive resource allocation and has been used as a potential measure of listening-related effort and fatigue. We investigated associations between peak pupil diameter, pre-stimulus pupil diameter, performance on a listening task, and the dimensionality of self-reported outcomes (task-related listening effort and fatigue).
Design: Pupillometry was recorded while participants performed a speech-in-noise task.
Low-dose aspirin is recommended by the U.S. Preventive Services Task Force for primary prevention of colorectal cancer in certain individuals.
View Article and Find Full Text PDFSpecialty palliative care (PC) is underused for patients with end-stage liver disease (ESLD). We sought to examine attitudes of hepatologists and gastroenterologists about PC for patients with ESLD. We conducted a cross-sectional survey of these specialists who provide care to patients with ESLD.
View Article and Find Full Text PDFBackground & Aims: Despite evidence for the benefits of palliative care (PC) referrals and early advance care planning (ACP) discussions for patients with chronic diseases, patients with end-stage liver disease (ESLD) often do not receive such care. We sought to examine physicians' perceptions of the barriers to PC and timely ACP discussions for patients with ESLD.
Methods: We conducted a cross-sectional survey of hepatologists and gastroenterologists who provide care to adult patients with ESLD, recruited from the American Association for the Study of Liver Diseases 2018 membership registry.
Background: Although aspirin is recommended for the prevention of colorectal cancer, the specific individuals for whom the benefits outweigh the risks are not clearly defined. Moreover, the precise mechanisms by which aspirin reduces the risk of cancer are unclear. We recently launched the ASPirin Intervention for the REDuction of colorectal cancer risk (ASPIRED) trial to address these uncertainties.
View Article and Find Full Text PDFCurr Opin Endocrinol Diabetes Obes
February 2013
Purpose Of Review: We highlight some of the major recent advances that have been made towards understanding the mechanisms that control endocrine differentiation and cell identity in the pancreas and intestine.
Recent Findings: Notch signaling plays a complex role in the fate choice between endocrine, duct, and acinar lineages in the developing pancreas. New approaches to dissecting the role of mesenchymal cells in the developing endocrine pancreas reveal inhibitory signals from the endothelium.
Diabetes is a disease of abnormal glucose homeostasis characterized by chronic hyperglycemia and a broad array of consequent organ damage. Because normal glucose homeostasis is maintained by a complex interaction between behavior (feeding and physical activity) and metabolic activity that is modulated by inter-organ signaling through secreted factors, disease modeling in vitro is necessarily limited. In contrast, in vivo studies allow complex metabolic phenotypes to be studied but present a barrier to high throughput studies.
View Article and Find Full Text PDFDiabetes is a pathological condition characterized by relative insulin deficiency, persistent hyperglycemia, and, consequently, diffuse micro- and macrovascular disease. One therapeutic strategy is to amplify insulin-secretion capacity by increasing the number of the insulin-producing β cells without triggering a generalized proliferative response. Here, we present the development of a small-molecule screening platform for the identification of molecules that increase β-cell replication.
View Article and Find Full Text PDFVertebrate limb development is controlled by three signaling centers that regulate limb patterning and growth along the proximodistal (PD), anteroposterior (AP) and dorsoventral (DV) limb axes. Coordination of limb development along these three axes is achieved by interactions and feedback loops involving the secreted signaling molecules that mediate the activities of these signaling centers. However, it is unknown how these signaling interactions are processed in the responding cells.
View Article and Find Full Text PDFWnts are secreted signaling molecules that can transduce their signals through several different pathways. Wnt-5a is considered a noncanonical Wnt as it does not signal by stabilizing beta-catenin in many biological systems. We have uncovered a new noncanonical pathway through which Wnt-5a antagonizes the canonical Wnt pathway by promoting the degradation of beta-catenin.
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