It is known that visual illusions lead to a distorted perception of the length and orientation of lines, but it is not clear how these illusions affect the appreciation of the shape of closed forms. In this study two experiments were performed to characterize distortions in the visual perception of the shape of quadrilaterals and the extent to which these distortions were similar to the distortions of haptically sensed shapes. In the first experiment human subjects were presented with two quadrilaterals side by side on a computer monitor. One was a reference shape; the other was rotated and distorted relative to the first. The subjects used the computer mouse to adjust the corners of the distorted quadrilateral to match the shape of the target quadrilateral. They made consistent errors on this task: the adjusted quadrilateral was about 2% wider and about 2% shorter than the veridical shape. Furthermore, subjects adjusted the inner angles of the quadrilateral to make them closer to 90 degrees . The first type of error was also present in a second experiment in which, in a two-alternative forced-choice paradigm, subjects viewed a reference shape and were asked to indicate which of two transiently presented quadrilaterals was closest to the target shape. The width/height errors and the inner angle errors were comparable to those described previously when subjects felt the outline of a quadrilateral and then drew its reproduction in the absence of vision, suggesting that the distortion occurs in the process of remembering the shape.
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Biomed Phys Eng Express
January 2025
Physics Department, University at Albany, 1400 Washington Ave, Albany, New York, 12222-0100, UNITED STATES.
Conventional x-ray radiography relies on attenuation differences in the object, which often results in poor contrast in soft tissues. X-ray phase imaging has the potential to produce higher contrast but can be difficult to utilize. Instead of grating-based techniques, analyzer-based imaging, also known as diffraction enhanced imaging (DEI), uses a monochromator crystal with an analyzer crystal after the object.
View Article and Find Full Text PDFJMIR Res Protoc
January 2025
Department of Public Health, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Background: To successfully design, develop, implement, and deliver digital health services that provide value, they should be cocreated with patients. However, occasionally, the value may also be codestructed. In the field of health care, the concepts of value cocreation and codestruction still need to be better established within emerging digital health services.
View Article and Find Full Text PDFJ Phys Ther Educ
December 2024
Matthew A. Nuciforo is the associate professor, chair, and program director in the Department of Physical Therapy and is the associate dean for Admissions and Enrollment in the College of Health Professions at the Rosalind Franklin University of Medicine and Science 3333 N Green Bay Rd, North Chicago, IL 60064 Please address all correspondence to Matthew A. Nuciforo.
Introduction: In contrast to the increased diversity of the US population, historically excluded racial and ethnic groups remain underrepresented in the physical therapist profession. As decision-makers, faculty exert direct influence on enrollment through evaluating applications and determining which applicants are deserving of admission to physical therapist programs.
Review Of Literature: Faculty decision-making in admissions is a cultural process which can reproduce inequities and perpetuate underrepresentation if faculty fail to recognize systemic disparities in legitimized forms of merit.
Proc Natl Acad Sci U S A
January 2025
Maladies infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle, University of Montpellier, CNRS, Institut de Recherche pour le Développement, Montpellier 34095, France.
Tubulin detyrosination has been implicated in various human disorders and is important for regulating microtubule dynamics. While in most organisms this modification is restricted to α-tubulin, in trypanosomatid parasites, it occurs on both α- and β-tubulin. Here, we show that in , a single vasohibin (LmVASH) enzyme is responsible for differential kinetics of α- and β-tubulin detyrosination.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Structural and Molecular Biology, University College London, London, United Kingdom.
Previous studies have highlighted the inherent subjectivity, complexity, and challenges associated with research quality leading to fragmented findings. We identified determinants of research publication quality in terms of research activities and the use of information and communication technologies by employing an interdisciplinary approach. We conducted web-based surveys among academic scientists and applied machine learning techniques to model behaviors during and after the COVID-19 pandemic.
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