Agnes Flöel

Brain Regions Involved in Object-Location Memory Across the Human Lifespan: A Systematic Review and Activation Likelihood Estimation Meta-Analysis of Task-Based fMRI

This paper conducts a systematic review and meta-analysis of fMRI studies on object-location memory, identifying key brain regions involved in encoding and retrieval and age-related differences in neural activity.

Functionally Relevant and Reliable Brain Stimulation Targets for Enhancement of Novel Word-Learning

This study identifies reliable and functionally relevant brain regions for tDCS to enhance novel-word learning and assesses test-retest reliability of behavioral and imaging outcomes.

Enhancing slow-wave sleep via non-invasive brain stimulation modulates brain-to-blood clearance of Alzheimer's disease biomarkers

This study shows that non-invasive brain stimulation during sleep increases slow oscillations and links these changes to altered Alzheimer's disease biomarkers in plasma.

Multimodal Imaging-Based Targeting Approach for Network-Level Brain Stimulation

The paper introduces a multimodal fMRI framework to guide tDCS target selection by integrating intrinsic connectivity and task-evoked activity patterns.

Normative Deviations Reveal Task-Evoked and Clinical Network Reorganization

OSCAR detects condition-related deviations in brain connectivity using a normative modeling framework, identifying task-evoked and clinical network reorganization with high accuracy.

Temporo-Occipital and Medial Temporal Networks Underlying Object-Location Learning

This study identifies functional brain networks involved in object-location learning using fMRI and shows how connectivity within these networks changes with learning performance.

Polarity-dependent modulation of sleep oscillations and cortical excitability in aging

This study tests the effect of anodal and cathodal so-tDCS on sleep oscillations and cortical excitability in older adults, finding that anodal so-tDCS improves SO-spindle synchrony and cortical excitability, while cathodal so-tDCS does not enhance these measures.

Harmonizing the stimulation dose of focal tDCS across target sites

This paper develops a computational framework to standardize tDCS stimulation doses across brain regions while preserving individual variability, validated in an independent sample.

Deep learning to overcome human error and bias in electrode position extraction in tDCS-fMRI studies

The paper develops a deep learning model to automate electrode detection in tDCS-fMRI studies, outperforming manual and semi-automated methods in precision and reducing human bias.

Occipital tACS does not modulate manual performance but fixation variability under visuo-proprioceptive conflict

This study tests if occipital tACS at alpha or beta frequencies affects manual performance or fixation variability during visuo-proprioceptive conflict, finding no effect on performance but reduced fixation variability with beta-tACS.

Brain oscillatory processes related to sequence memory in healthy older adults

This study examines age-related differences in brain oscillatory processes during sequence memory encoding using EEG, finding that older adults show altered theta-gamma phase-amplitude coupling compared to young adults.

A candidate reference method for the quantification of α-synuclein in cerebrospinal fluid using an SI traceable primary calibrator and multiple reaction monitoring

This paper develops a reference method for quantifying α-synuclein in CSF using SI-traceable calibration and MRM, showing linearity across three orders of magnitude.

An accessible and versatile deep learning-based sleep stage classifier

The paper introduces an open-source deep learning classifier for sleep staging that achieves high accuracy and is easy to use across various electrode setups.

Towards optimization of oscillatory stimulation during sleep

This study investigates how matching stimulation frequency to natural slow oscillations during sleep affects SO-spindle coupling, finding that standardized frequency is more effective than individualized frequency.

Interrelations between delta waves, spindles and slow oscillations in human NREM sleep and their functional role in memory

This study investigates delta waves, spindles, and slow oscillations in human NREM sleep and their role in memory formation in older adults, finding that the ratio of SO- to delta-nested spindles predicts memory ability.

Beneficial effects of cerebellar tDCS on motor learning are associated with altered putamen-cerebellar connectivity: a simultaneous tDCS-fMRI study

This study shows that cerebellar tDCS enhances motor learning by altering putamen-cerebellar connectivity, as revealed through simultaneous tDCS-fMRI.

Weight loss reduces head motion: re-visiting a major confound in neuroimaging

This study shows weight loss reduces head motion during MRI, suggesting potential biases in neuroimaging outcomes related to obesity.

Transcranial stimulation enhances memory-relevant sleep oscillations and their functional coupling in mild cognitive impairment

This study shows that slow oscillatory transcranial direct current stimulation during naps increases sleep oscillations and their synchronization, improving memory in mild cognitive impairment patients.