Julien Doyon

Thalamocortical orchestration of human theory of mind

This paper investigates thalamocortical dynamics during theory of mind tasks using fMRI and sEEG, finding that the thalamus coordinates default network activity through phase-amplitude coupling without local activation.

Sleep Spindle-Locked Targeted Memory Reactivation Enhances Declarative Memory Consolidation

This study shows that targeted memory reactivation during sleep spindles improves recall-based memory retention, with spindle temporal clustering affecting different memory outcomes.

Spinal cord structural and functional architecture and its shared organization with the brain across the adult lifespan

This study maps age-related structural and functional changes in the spinal cord and brain, identifying shared aging patterns across the central nervous system.

Spine-Prints: Transposing Brain Fingerprints to the Spinal Cord

This paper demonstrates that functional connectivity patterns in the human cervical spinal cord exhibit individual-specific properties, suggesting the existence of a spinal cord 'fingerprint' similar to brain fingerprints.

Slow Spindle Trains During Daytime Naps are Associated with Improved Declarative Memory Consolidation

The paper investigates whether slow spindle trains during daytime naps support declarative memory consolidation, finding that slow spindles clustered in trains correlate with better memory performance.

Impaired online and enhanced offline motor sequence learning in individuals with Parkinson's disease

This study investigates motor sequence learning in Parkinson's disease patients, finding impaired online learning but enhanced micro-offline learning, suggesting hippocampal compensation for striatal dysfunction.

Multimodal precision MRI of the individual human brain at ultra-high fields

The paper shares a multimodal 7T MRI dataset of ten healthy individuals, providing structural and functional brain data across multiple imaging modalities and parcellation scales.

Body size interacts with the structure of the central nervous system: A multi-center in vivo neuroimaging study

This study shows body size parameters significantly correlate with brain and spinal cord MRI metrics and should be included in neuroimaging studies.

DeepRetroMoCo: Deep neural network-based Retrospective Motion Correction Algorithm for Spinal Cord functional MRI

DeepRetroMoCo improves motion correction in spinal cord fMRI data by outperforming sct_fmri_moco in tSNR, DVARS, and processing time.

Sleep spindle density and temporal clustering are associated with sleep-dependent memory consolidation in Parkinson's disease

This study investigates the relationship between sleep spindles and memory consolidation in Parkinson's disease patients, finding that lower spindle density and reduced temporal clustering are associated with worse memory consolidation.

Neurophysiological Correlates of Phase-Specific Enhancement of Motor Memory Consolidation via Slow-Wave Closed-Loop Targeted Memory Reactivation

This study investigates how phase-specific targeted memory reactivation during sleep affects motor memory consolidation, finding that up-state cues improve performance and alter neural activity.

Clustering and temporal organization of sleep spindles underlie motor memory consolidation

The paper shows that sleep spindles cluster in NREM2 sleep, supporting motor memory consolidation through synchronized oscillatory activity.

Cerebro-spinal somatotopic organization uncoveredthrough functional connectivity mapping

This study uses resting-state fMRI to reveal a somatotopic gradient in cerebro-spinal functional connectivity, showing coordinated sensorimotor organization between the brain and spinal cord.

Targeted memory reactivation during post-learning sleep does not enhance motor memory consolidation in older adults

This study investigates whether targeted memory reactivation during sleep improves motor memory consolidation in older adults, finding no enhancement despite modulation of brain responses to auditory cues.

Persistence of Hippocampal and Striatal Multivoxel Patterns during Awake Rest after Motor Sequence Learning

The paper shows that motor sequence learning leads to persistent hippocampal and striatal activity patterns during post-learning rest, indicating reactivation of learning-related neural activity.

Sigma Oscillations Protect or Reinstate Motor Memory Depending on their Temporal Coordination with Slow Waves

The paper shows that auditory TMR during sleep enhances motor memory by modulating slow wave-sigma oscillation coupling depending on timing.

The length of the thalamo-cortical white matter fibers brings insight into sex differences in sleep spindle frequency

Improving spatial normalization of brain diffusion MRI to measure longitudinal changes of tissue microstructure in the cortex and white matter.

This paper compares normalization pipelines for diffusion MRI to improve longitudinal measurement of tissue microstructure in brain gray and white matter.

Consolidation alters motor sequence-specific distributed representations

In human fMRI, consolidated finger sequences are more discriminable than new ones in sensorimotor putamen, premotor and prefrontal cortices, but less so in hippocampus and caudate.

A (blue) light in the dark: Blue light modulates oscillatory alpha activity in the occipital cortex of totally visually blind individuals with intact non-visual photoreception

This study shows that blue light modulates alpha rhythm in the occipital cortex of totally blind individuals with non-visual light perception, suggesting ipRGCs influence brain activity beyond vision.

Tractography-based connectomes are dominated by false-positive connections

The paper evaluates tractography methods by analyzing a simulated dataset, finding that most algorithms generate many false-positive connections.