We assessed the automaticity of spatial-numerical and spatial-musical associations by testing their intentionality and load sensitivity in a dual-task paradigm. In separate sessions, 16 healthy adults performed magnitude and pitch comparisons on sung numbers with variable pitch. Stimuli and response alternatives were identical, but the relevant stimulus attribute (pitch or number) differed between tasks. Concomitant tasks required retention of either color or location information. Results show that spatial associations of both magnitude and pitch are load sensitive and that the spatial association for pitch is more powerful than that for magnitude. These findings argue against the automaticity of spatial mappings in either stimulus dimension.
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Front Hum Neurosci
December 2024
Department of Otolaryngology-Head and Neck Surgery, Ohio State University Wexner Medical Center, Columbus, OH, United States.
Introduction: Pseudorandom balance perturbations use unpredictable disturbances of the support surface to quantify reactive postural control. The ability to quantify postural responses to a continuous multidirectional perturbation in two orthogonal dimensions of sway (e.g.
View Article and Find Full Text PDFAerosp Med Hum Perform
November 2024
Introduction: As next-generation space exploration missions require increased autonomy from crews, real-time diagnostics of astronaut health and performance are essential for mission operations, especially for determining extravehicular activity readiness. An augmented reality (AR) system may be a viable tool allowing holographic visual cueing to replace physical objects used in traditional assessments.
Methods: In this study, 20 healthy adults were compared in an Ingress and Egress Task and Obstacle Weave Task with holographic and physical objects to determine the effect of AR on performance.
Multi-degree-of-freedom (MDOF) measurement systems are crucial in the domain of precision manufacturing, where miniaturization represents a significant developmental trend. Folded optical paths are commonly employed in the angle measurement modules of these systems as a means to reduce equipment size. However, these paths introduce angle coupling, which renders traditional angle measurement models inadequate.
View Article and Find Full Text PDFSports Biomech
November 2024
Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia.
Early upper trunk rotation during baseball pitching has been associated with higher upper-limb kinetics. However, its relationship with arm fatigue after repetitive pitching is unclear. This study aimed to investigate associations between upper trunk rotation kinematics and arm fatigue.
View Article and Find Full Text PDFBiomicrofluidics
September 2024
In recent years, the allure of space exploration and human spaceflight has surged, yet the effects of microgravity on the human body remain a significant concern. Immune and red blood cells rely on hematic or lymphatic streams as their primary means of transportation, posing notable challenges under microgravity conditions. This study sheds light on the intricate dynamics of cell behavior when suspended in bio-fluid under varying gravitational forces.
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