9 papers · ranked by Valyu relevance
Alexandra B. Bosshard, Maël Leroux, Nicholas A. Lester, Balthasar Bickel + 2 more
Emerging data in a range of non-human animal species have highlighted a latent ability to combine certain pre-existing calls together into larger structures. Currently, however, there exists no objective quantification of call combinations. This is problematic because animal calls can co-occur with one another simply…
Joseph G. Mine, Claudia Wilke, Chiara Zulberti, Melika Bejhati + 5 more
Human communication is strikingly multi-modal, relying on vocal utterances combined with visual gestures, facial expressions and more. Recent efforts to describe multi-modal signal production in our ape relatives have shed important light on the evolutionary trajectory of this core hallmark of human language. However…
Elliot Howard-Spink, Monika Mircheva, Judith M. Burkart, Simon W. Townsend
Many animals communicate using sequences of signals, but identifying recurrent, non-random signal combinations remains methodologically challenging. Collocation analyses are increasingly popular approaches for detecting which signals animals combine at rates greater than expected by chance. However, existing methods…
Christopher L. Dembia, Nicholas A. Bianco, Antoine Falisse, Jennifer L. Hicks + 1 more
Musculoskeletal simulations of movement can provide insights needed to help humans regain mobility after injuries and design robots that interact with humans. Here, we introduce Open-Sim Moco, a software toolkit for optimizing the motion and control of musculoskeletal models built in the OpenSim modeling and simulation…
Anne D. Koelewijn, Antonie J. van den Bogert
This short communication describes a method to solve predictive simulations of human movements in a stochastic environment using a collocation method. The optimization is performed over multiple noisy episodes of the trajectory, instead of a single episode in a deterministic environment. Each episode used the same…
Armine Garibyan, Achim Schilling, Claudia Boehm, Alexandra Zankl + 1 more
Language is fundamentally predictable, both on a higher schematic level as well as low-level lexical items. Regarding predictability on a lexical level, collocations are frequent co-occurrences of words that are often characterized by high strength of association. So far, psycho-and neurolin guistic studies have mostly…
C.V. Hammond, S.T. Williams, M.M. Vega, D. Ao + 7 more
Neuromusculoskeletal injuries including osteoarthritis, stroke, spinal cord injury, and traumatic brain injury affect roughly 19% of the U.S. adult population. Standardized interventions have produced suboptimal functional outcomes due to the unique treatment needs of each patient. Strides have been made to utilize…
Antoine Falisse, Gil Serrancolí, Christopher L. Dembia, Joris Gillis + 1 more
Algorithmic differentiation (AD) is an alternative to finite differences (FD) for evaluating function derivatives. The primarily aim of this study was to demonstrate the computational benefits of using AD instead of FD in OpenSim-based optimal control simulations. The secondary aim was to evaluate computational choices…
Antonie J. (Ton) van den Bogert
Muscle activation dynamics is usually described with a nonlinear differential equation, such that the activation occurs faster than deactivation. When a muscle excitation input switches rapidly between two values, this produces a “pumping” effect that raises the activation above the mean excitation input. This effect…