Skip to content

Home Search Authors Pakistan News Saved

SciRah

SciRah does not host or store research papers. Results come live from free, official scholarly APIs, and every paper links back to its original source.

Data sources

OpenAlex
Semantic Scholar
Crossref
CORE
arXiv
PubMed

Privacy policy Terms of service

R. Helfrich · SciRah

Researcher profile · Semantic Scholar

R. Helfrich

Share profile

R. Helfrich — researcher profile on SciRah

h-index: 21
Works: 63
Citations: 4,622

Most-cited papers

Entrainment of brain oscillations by transcranial alternating current stimulation.
R. Helfrich, T. Schneider, S. Rach, S. Trautmann-Lengsfeld +2 more
2014Current Biology817 citations Open access
Semantic Scholar
EEG oscillations: From correlation to causality.
C. Herrmann, D. Strüber, R. Helfrich, A. Engel
2016International Journal of Psychophysiology485 citations
Semantic Scholar
Old brains come uncoupled in sleep – Slow wave-spindle synchrony, brain atrophy and forgetting
R. Helfrich, B. Mander, W. Jagust, R. Knight +1 more
2017Neuron460 citations Open access
Semantic Scholar
Neural mechanisms of sustained attention are rhythmic
R. Helfrich, I. Fiebelkorn, S. Szczepanski, Jack J. Lin +3 more
2018Neuron433 citations Open access
Semantic Scholar
An electrophysiological marker of arousal level in humans
Janna D. Lendner, R. Helfrich, B. Mander, L. Romundstad +4 more
2019bioRxiv361 citations Open access
Semantic Scholar
Selective Modulation of Interhemispheric Functional Connectivity by HD-tACS Shapes Perception
R. Helfrich, Hannah Knepper, G. Nolte, D. Strüber +4 more
2014PLoS Biology299 citations Open access
Semantic Scholar
Oscillatory Dynamics of Prefrontal Cognitive Control
R. Helfrich, R. Knight
2016Trends in Cognitive Sciences296 citations Open access
Semantic Scholar
Sleep as a Potential Biomarker of Tau and β-Amyloid Burden in the Human Brain
Joseph R. Winer, B. Mander, R. Helfrich, A. Maass +5 more
2019Journal of Neuroscience227 citations Open access
Semantic Scholar
Bidirectional prefrontal-hippocampal dynamics organize information transfer during sleep in humans
R. Helfrich, Janna D. Lendner, B. Mander, Heriberto Guillen +6 more
2019Nature Communications195 citations Open access
Semantic Scholar
Slow oscillation-spindle coupling predicts enhanced memory formation from childhood to adolescence
M. Hahn, D. Heib, Manuel Schabus, Kerstin Hoedlmoser +1 more
2020eLife131 citations Open access
Semantic Scholar
Prefrontal cortex modulates posterior alpha oscillations during top-down guided visual perception
R. Helfrich, Melody Huang, G. Wilson, R. Knight
2017Proceedings of the National Academy of Sciences of the United States of America128 citations Open access
Semantic Scholar
Neural Entrainment and Network Resonance in Support of Top-down guided Attention
R. Helfrich, A. Breska, R. Knight
2019Current Opinion in Psychology124 citations Open access
Semantic Scholar
Cognitive neurophysiology: Event-related potentials.
R. Helfrich, R. Knight
2019Handbook of Clinical Neurology117 citations
Semantic Scholar
Different Coupling Modes Mediate Cortical Cross-Frequency Interactions
R. Helfrich, C. Herrmann, A. Engel, T. Schneider
2015bioRxiv79 citations Open access
Semantic Scholar
Human REM sleep recalibrates neural activity in support of memory formation
Janna D. Lendner, Niels Niethard, B. Mander, Frank J. van Schalkwijk +7 more
2023Science Advances64 citations Open access
Semantic Scholar
Aperiodic sleep networks promote memory consolidation
R. Helfrich, Janna D. Lendner, R. Knight
2021Trends in Cognitive Sciences62 citations Open access
Semantic Scholar
Processing of Coherent Visual Motion in Topographically Organized Visual Areas in Human Cerebral Cortex
R. Helfrich, Hubertus G. T. Becker, T. Haarmeier
2013Brain Topography57 citations
Semantic Scholar
Spectral fingerprints of large‐scale cortical dynamics during ambiguous motion perception
R. Helfrich, Hannah Knepper, G. Nolte, M. Sengelmann +3 more
2016Human Brain Mapping29 citations Open access
Semantic Scholar
Slow oscillation–spindle coupling strength predicts real-life gross-motor learning in adolescents and adults
M. Hahn, Kathrin Bothe, D. Heib, Manuel Schabus +2 more
2021bioRxiv26 citations Open access
Semantic Scholar
Top-Down Attentional Modulation in Human Frontal Cortex: Differential Engagement during External and Internal Attention.
J. Kam, R. Helfrich, A. Solbakk, T. Endestad +3 more
2020Cerebral Cortex25 citations Open access
Semantic Scholar
Subspace partitioning in the human prefrontal cortex resolves cognitive interference
Jan Weber, Gabriela Iwama, A. Solbakk, A. Blenkmann +5 more
2023Proceedings of the National Academy of Sciences of the United States of America23 citations Open access
Semantic Scholar
Cognitive neurophysiology of the prefrontal cortex.
R. Helfrich, R. Knight
2019Handbook of Clinical Neurology22 citations
Semantic Scholar
Ramping dynamics and theta oscillations reflect dissociable signatures during rule-guided human behavior
Jan Weber, A. Solbakk, A. Blenkmann, Anaïs Llorens +7 more
2024Nature Communications19 citations Open access
Semantic Scholar
Multiple Intrinsic Timescales Govern Distinct Brain States in Human Sleep
Janna D. Lendner, Jack J. Lin, P. G. Larsson, R. Helfrich
2024Journal of Neuroscience18 citations Open access
Semantic Scholar
The rhythmic nature of visual perception.
R. Helfrich
2018Journal of Neurophysiology16 citations
Semantic Scholar
Subspace partitioning in human prefrontal cortex resolves cognitive interference
Jan Weber, Gabriela Iwama, A. Solbakk, A. Blenkmann +5 more
2022bioRxiv14 citations Open access
Semantic Scholar
Aperiodic Activity Indexes Neural Hyperexcitability in Generalized Epilepsy
M. Kopf, Jan Martini, C. Stier, Silke Ethofer +5 more
2024eNeuro13 citations Open access
Semantic Scholar
Aperiodic 1/f noise drives ripple activity in humans
Frank J. van Schalkwijk, R. Helfrich
2026Nature Communications11 citations
Semantic Scholar
Periodic attention deficits after frontoparietal lesions provide causal evidence for rhythmic attentional sampling
Isabel Raposo, S. Szczepanski, K. Haaland, T. Endestad +3 more
2023Current Biology11 citations
Semantic Scholar
Slow Oscillation–Spindle Coupling Predicts Sequence-Based Language Learning
Zachariah R. Cross, R. Helfrich, Andrew W. Corcoran, Adam J. O. Dede +7 more
2020Journal of Neuroscience10 citations Open access
Semantic Scholar
Modulation of Cortical Network Activity by Transcranial Alternating Current Stimulation
R. Helfrich, T. Schneider
2013Journal of Neuroscience9 citations Open access
Semantic Scholar
Human attention-guided visual perception is governed by rhythmic oscillations and aperiodic timescales
Isabel Raposo, I. Fiebelkorn, Jack J. Lin, J. Parvizi +4 more
2025PLoS Biology8 citations Open access
Semantic Scholar
An evolutionary conserved division-of-labor between archicortical and neocortical ripples organizes information transfer during sleep.
F. Schalkwijk, Jan Weber, M. Hahn, Janna D. Lendner +3 more
2023Progress in neurobiology8 citations
Semantic Scholar
A communication subspace relays context-dependent actions from human prefrontal to motor cortex
Neha Binish, Jonas Terlau, Jan Martini, Jack J. Lin +2 more
2026Nature Neuroscience5 citations
Semantic Scholar
Structure in noise: Recurrent connectivity shapes neural variability to balance perceptual and cognitive demands in the human brain.
Jonas Terlau, Jan Martini, R. Helfrich
2025Neuron5 citations Open access
Semantic Scholar
A tradeoff between efficiency and robustness in the hippocampal-neocortical memory network during human and rodent sleep.
M. Hahn, Janna D. Lendner, Matthias Anwander, Katarina Slama +3 more
2024Progress in neurobiology5 citations Open access
Semantic Scholar
Human REM sleep controls neural excitability in support of memory formation
Janna D. Lendner, B. Mander, S. Schuh-Hofer, Hannah Schmidt +4 more
2022bioRxiv5 citations Open access
Semantic Scholar
Population coding and oscillatory subspace synchronization integrate context into actions
Janna-Lynn Weber, A. Solbakk, A. Blenkmann, Anaïs Llorens +7 more
2021bioRxiv4 citations Open access
Semantic Scholar
Spindle-slow oscillation coupling during sleep predicts sequence-based language learning
Zachariah R. Cross, R. Helfrich, Andrew W. Corcoran, Mark J. Kohler +6 more
20214 citations
Semantic Scholar
Aperiodic Activity Reflects Pathologic Waveform Shapes in Focal Epilepsy
Laura F Heidiri, Silke Ethofer, G. Naros, Frank J. van Schalkwijk +1 more
2025Journal of Neuroscience3 citations Open access
Semantic Scholar
High frequency bursts facilitate fast communication for human spatial attention
Kianoush Banaie Boroujeni, R. Helfrich, I. Fiebelkorn, J. Bentley +4 more
2024bioRxiv3 citations
Semantic Scholar
Spectral mapping reveals a resemblance of the anesthetic brain state to both sleep and coma.
Janna D. Helfrich, Jerzy P. Szaflarski, Marianne C. J. Nævra, Luis Romunstad +5 more
2026Proceedings of the National Academy of Sciences of the United States of America2 citations Open access
Semantic Scholar
High frequency bursts facilitate fast communication for human spatial attention
Kianoush Banaie Boroujeni, R. Helfrich, I. Fiebelkorn, J. Bentley +4 more
2025Nature Neuroscience2 citations Open access
Semantic Scholar
Conjunctive population coding integrates sensory evidence to guide adaptive behavior
Jonas Terlau, Silke Ethofer, G. Naros, Yvonne M Fonken +3 more
2025Proceedings of the National Academy of Sciences of the United States of America2 citations Open access
Semantic Scholar
Methods to Study Human Memory
R. Helfrich, R. Knight, M. D'Esposito
20222 citations
Semantic Scholar
An evolutionary conserved division-of-labor between hippocampal and neocortical sharp-wave ripples organizes information transfer during sleep
Frank J. van Schalkwijk, Jan Weber, M. Hahn, Janna D. Lendner +3 more
2022bioRxiv2 citations Open access
Semantic Scholar
How Does Expectation Shape Object-Based Attentional Selection?
S. J. Katarina Slama, R. Helfrich
2017Journal of Neuroscience2 citations Open access
Semantic Scholar
How Brain Cells Make Memories
E. Johnson, R. Helfrich
2016Front. Young Minds.2 citations Open access
Semantic Scholar
Connectome-based disentangling of epilepsy networks from insular stereoelectroencephalographic leads
Kathrin Machetanz, E. Weinbrenner, T. Wuttke, Silke Ethofer +9 more
2025Frontiers in Neurology1 citations Open access
Semantic Scholar
An inhibitory circuit motif governs oscillation-dependent coupling between aperiodic activity and neural spiking
Janna D. Helfrich, Julia Veit, R. Helfrich
2026bioRxiv0 citations Open access
Semantic Scholar

Frequent co-authors

Invite them to SciRah by sharing their profile.

R. Knight×17
Invite
R. Knight — researcher profile on SciRah
Janna D. Lendner×9
Invite
Janna D. Lendner — researcher profile on SciRah
Jack J. Lin×8
Invite
Jack J. Lin — researcher profile on SciRah
B. Mander×7
Invite
B. Mander — researcher profile on SciRah

×6

Invite

M. P. Walker — researcher profile on SciRah

Invite

A. Solbakk — researcher profile on SciRah

Invite

T. Endestad — researcher profile on SciRah

Robert T. Knight×6

Invite

Robert T. Knight — researcher profile on SciRah

T. Schneider×5

Invite

T. Schneider — researcher profile on SciRah

P. G. Larsson×5

Invite

P. G. Larsson — researcher profile on SciRah

Invite

M. Hahn — researcher profile on SciRah

Invite

A. Engel — researcher profile on SciRah