q-bio papers | Gist.Science

Enhancement of Bioactive Compounds in Gymnema sylvester cell Suspension Cultures Using Green-synthesized Silver Nanoparticles

This study demonstrates that treating *Gymnema sylvestre* cell suspension cultures with green-synthesized silver nanoparticles (specifically 5 ppm for 3 days) effectively acts as a nano-elicitor to significantly enhance the production of valuable bioactive compounds, including various gymnemic acids and related metabolites, offering a sustainable strategy for the commercial exploitation of this medicinal plant.

Priti Mysore, Dhananjay Bodas, Abhijit Limaye2026-09-14

🧬 biology

Spike-Based Adaptation of EEG Foundation Models for Calibration Efficient Cross-Subject Brain-Computer Interfaces

This paper proposes a spike-based adaptation framework that integrates a pretrained EEG foundation model with a lightweight neuromorphic module to achieve calibration-efficient, resource-aware cross-subject brain-computer interfaces, significantly reducing adaptation time and parameters while maintaining high accuracy across diverse EEG tasks and datasets.

Mohammad Alam2026-09-14✓ Author reviewed ⓘ

🧬 biology

Committing to Reappraisal: Factors that Influence Implementation of Reappraisals for Autobiographical Stressors

This study of 299 participants demonstrates that implementing cognitive reappraisals for personal stressors yields greater emotional benefits than merely generating them, with the decision to implement rather than distract being driven by the perceived believability of the reappraisal and the resulting positive emotion rather than individual differences in symptoms or beliefs.

Alyssa Totoro, Kateri McRae, Christian E. Waugh2026-09-14

🧬 biology

Global Geographic, Seasonal, Environmental and Demographic Drivers of Variations in Longitudinal Cardiac Physiology in 5 million Fitbit Users

This study leverages longitudinal data from nearly 5 million Fitbit users across 217 countries to establish the first global models quantifying how seasonal, geographic, and environmental factors influence resting heart rate and heart rate variability, revealing that these external drivers explain up to 21% of HRV variance and providing a robust framework for normalizing cardiac physiology data for personalized health applications.

Katarina Vukosavljević, Abram Schönfeldt, Justin Phillips, Yongsuk Cho, Tingting Zhu, Shwetak Patel, Soren Brage, Robert (…)2026-09-14

🧬 biology

The missing P-step in red tide dinoflagellates: A productive quenching model for Form II RuBisCO bioenergetics

This paper proposes a "productive quenching" model to explain the anomalous absence of the P-step in dark-acclimated *Lingulodinium polyedra*, suggesting that electrons are efficiently re-routed into cyclic and water-water cycles to generate the massive ATP pools required to fuel energy-intensive carbon-concentrating mechanisms that compensate for the inefficiency of Form II RuBisCO.

Christopher Hewes2026-09-14

🧬 biology

A Novel Phenomenological Fast-Slow Oscillator for Neuronal Dynamics

This paper introduces and analyzes a novel three-dimensional fast-slow dynamical system with Lorenz-type coupling that mathematically models complex neuronal behaviors, including relaxation oscillations, tonic spiking, and bursting, by leveraging geometric singular perturbation theory to characterize critical manifolds, folded singularities, and canard-mediated transitions.

Mounira Kesmia, Sabir Jacquir2026-09-14

🧬 biology

Tissue specificity shapes methylation–expression coupling across human and mouse genomes

By integrating human and mouse genomic data, this study demonstrates that tissue specificity modulates DNA methylation–expression coupling in a tissue- and genomic-region-dependent manner, rather than following a universal regulatory relationship across mammals.

Igor Kovalchuk, Olga Kovalchuk2026-09-14

🧬 biology

Dynamics of Excitatory-Inhibitory Coupling in Quantum Memristive LIF Neurons

This paper presents a minimal phenomenological model of two coupled quantum memristive leaky integrate-and-fire neurons that successfully replicates key excitatory-inhibitory dynamics, including six distinct firing regimes and a unique silent state, while highlighting the constraints of amplitude modulation imposed by Fock space truncation in quantum neuromorphic architectures.

Marta Adamowska, Domenica Dibenedetto2026-09-14

🧬 biology

3d Analysis of the Force Generated by a Honeybee During Flight

This study introduces a novel 3D analysis method to demonstrate that honeybees execute coordinated turns by maintaining a constant total force magnitude while redirecting their body orientation, a mechanism similar to that observed in pigeons and cockatiels.

Mahadeeswara Yadav Mandiyam, Srinivasan Mandyam2026-09-14

🧬 biology

Urbanization and soil type influence prokaryotic, fungal, and metazoan communities in children’s play environments: a pilot study

This pilot study of 14 children's play areas in Bielefeld reveals that substrate type (soil versus sand) and urbanization are the primary drivers structuring prokaryotic, fungal, and metazoan communities, with soil supporting higher diversity and all three taxonomic groups showing significant concordance in their community patterns.

Evgenia Dikareva, Patricia Maasjosthusmann, David Barnett, Jannina Dröge, Regina Penner, Joel Niklas Bayer, Christel Dri (…)2026-09-14

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