Sonja Grün

Reciprocal Fronto-Parietal Interactions Support Distinct Motor Strategies during Sequential Reaching

This study investigates how fronto-parietal interactions support different motor strategies during sequential reaching in rhesus macaques, finding bidirectional information transfer between parietal and motor areas.

A Quality Measure for Repeating Multiple-Unit Spike Patterns

The paper introduces a quality measure for spatio-temporal spike patterns in multiple-neuron recordings to distinguish meaningful pattern repetitions from chance occurrences.

Detection and Removal of Hyper-synchronous Artifacts in Massively Parallel Spike Recordings

The paper identifies and removes hyper-synchronous artifacts in electrophysiological recordings using zero-phase component analysis.

The effect of data preprocessing on spike correlation analysis results

This study shows that preprocessing steps in electrophysiological data can significantly affect spike correlation analysis results and proposes a correction method.

Spontaneous spiking statistics form unique area-specific fingerprints and reflect the hierarchy of cerebral cortex

The paper shows that spontaneous spiking statistics uniquely identify cortical areas and correlate with their hierarchical position in the cerebral cortex.

UnitRefine: A Community Toolbox for Automated Spike Sorting Curation

UnitRefine automates spike sorting curation using machine learning models trained on expert annotations, achieving human-level performance across species and datasets.

Neural manifolds in V1 change with top-down signals from V4 targeting the foveal region

This study identifies two distinct neural manifolds in V1 correlated with eye state and shows top-down signals from V4 to V1, particularly in the foveal region, during eyes-open periods.

Model of multiple synfire chains explains cortical spatio-temporal spike patterns

The paper models spatio-temporal spike patterns in monkey motor cortex using synfire chains and finds that overlapping chains with broad spatial distribution can explain the observed patterns.

Comparing surrogates to evaluate precisely timed higher-order spike correlations

This paper compares surrogate data generation methods for detecting significant spatio-temporal spike correlations, finding that uniform dithering leads to false positives and proposing better alternatives.

Overcoming the Reproducibility Crisis - Results of the first Community Survey of the German National Research Data Infrastructure for Neuroscience.

A survey of the German neuroscience community identifies key barriers to reproducible research and outlines strategies for improving research data management.

Global organization of neuronal activity only requires unstructured local connectivity

The paper shows that heterogeneous local connectivity enables complex long-range coordination in neuronal networks, explaining covariance patterns in motor cortex during rest and task.

On the complexity of resting state spiking activity in monkey motor cortex

The paper analyzes resting state spiking activity in monkey motor cortex, finding higher dimensionality, lower firing rates, and less excitation-inhibition balance compared to task-related states.

Behavioral context determines network state and variability dynamics in monkey motor cortex

The paper analyzes trial-to-trial and within-trial variability in monkey motor cortex during movement preparation and execution, finding distinct patterns in spike count variability and spike timing irregularity.