Preprint · neurorehabilitationPSI–NeuroCodec: a hypothesis for restoring motor function
A theoretical model of electrically assisted neurorehabilitation after spinal cord injury. A proposed test of voluntary control; clinical efficacy is unproven.
DOI: 10.5281/zenodo.23248259 ↗
Read the related research article →Preprint · methodologyValid State Transition Framework (VSTF)
A methodology for evaluating valid, stabilised state transitions. Retrospective analysis of Backblaze operational data.
DOI: 10.5281/zenodo.23247837 ↗
Open the publication on Zenodo →Preprint · systems oncologyOrganism Stability Disruption as a Decomposable Tumor Repair-State Axis
OSD: a decomposable tumour-tissue-state axis; retrospective analyses of public biological and clinical datasets.
DOI: 10.5281/zenodo.23247659 ↗
Read the related research article →Research report · laboratory protocolOSD Laboratory Protocol v1.0 for Testing the Organism Stability Disruption Repair-State Reset Hypothesis
A proposed preclinical perturbation, withdrawal, recovery and rechallenge procedure. The experiment has not been carried out.
DOI: 10.5281/zenodo.23247433 ↗
Read the related research article →Preprint · financial time seriesPSI: Predicting Instability and Critical Transitions in Financial Markets
Martin Petrásek (2026). The Perturbation Susceptibility Index combines realised volatility with relaxation estimated from the autocorrelation structure of market time series. The hypothesis concerns changes in a market system's dynamic susceptibility; it does not establish a validated trading-decision tool.
DOI: 10.5281/zenodo.20364144 ↗ · Research context →
Preprint · geophysical systemsPSI: A Relaxation-Based Framework for Critical Volcanic Transitions
Martin Petrásek (2026). The Planetary Stability Interface examines the ratio of effective perturbation amplification to relaxation dynamics. The manuscript reports a retrospective analysis of seismic data associated with the 2021 Fagradalsfjall unrest. It is not a validated eruption-forecasting system.
DOI: 10.5281/zenodo.20277063 ↗ · Research context →