Visualizing a task performer's gaze to foster observers' performance and learning—a systematic literature review on eye movement modeling examples

SN Emhardt, E Kok, T van Gog… - Educational Psychology …, 2023 - Springer
Eye movement modeling examples (EMMEs) are instructional videos (eg, tutorials) that
visualize another person's gaze location while they demonstrate how to perform a task. This …

Multifractal test for nonlinearity of interactions across scales in time series

DG Kelty-Stephen, E Lane, L Bloomfield… - Behavior Research …, 2023 - Springer
The creativity and emergence of biological and psychological behavior tend to be nonlinear,
and correspondingly, biological and psychological measures contain degrees of irregularity …

Temporal organization of stride-to-stride variations contradicts predictive models for sensorimotor control of footfalls during walking

M Mangalam, DG Kelty-Stephen, JH Sommerfeld… - Plos one, 2023 - journals.plos.org
Walking exhibits stride-to-stride variations. Given ongoing perturbations, these variations
critically support continuous adaptations between the goal-directed organism and its …

Multifractal descriptors ergodically characterize non-ergodic multiplicative cascade processes

DG Kelty-Stephen, M Mangalam - Physica A: Statistical Mechanics and its …, 2023 - Elsevier
Biological and psychological processes routinely break ergodicity, meaning they fail to have
stable means (M ean) and independent variation over time that we might find in additive …

Ergodic characterization of nonergodic anomalous diffusion processes

M Mangalam, R Metzler, DG Kelty-Stephen - Physical Review Research, 2023 - APS
Anomalous diffusion in various complex systems abounds in nature and spans multiple
space and time scales. Canonical characterization techniques that rely upon mean squared …

Turing's cascade instability supports the coordination of the mind, brain, and behavior

DG Kelty-Stephen, M Mangalam - Neuroscience & Biobehavioral Reviews, 2022 - Elsevier
Turing inspired a computer metaphor of the mind and brain that has been handy and has
spawned decades of empirical investigation, but he did much more and offered behavioral …

Multifractal roots of suprapostural dexterity

DG Kelty-Stephen, IC Lee, NS Carver… - Human Movement …, 2021 - Elsevier
Visually guided postural control emerges in response to task constraints. Task constraints
generate physiological fluctuations that foster the exploration of available sensory …

Fractal and multifractal descriptors restore ergodicity broken by non-Gaussianity in time series

DG Kelty-Stephen, M Mangalam - Chaos, Solitons & Fractals, 2022 - Elsevier
Ergodicity breaking is a challenge for biological and psychological sciences. Ergodicity is a
necessary condition for linear causal modeling. Long-range correlations and non …

Multifractal nonlinearity moderates feedforward and feedback responses to suprapostural perturbations

DG Kelty-Stephen, J Lee, KR Cole… - … and motor skills, 2023 - journals.sagepub.com
An adaptive response to unexpected perturbations requires near-term and long-term
adjustments over time. We used multifractal analysis to test how nonlinear interactions …

Machine-learning classification with additivity and diverse multifractal pathways in multiplicativity

M Mangalam, H Seckler, DG Kelty-Stephen - Physical Review Research, 2024 - APS
Evidence of multifractal structures has spread to a wider set of physiological time series
supporting the intricate interplay of biological and psychological functioning. These …