A5081018278- EEG and Brain-Computer Interfaces
- Transcranial Magnetic Stimulation Studies
- Muscle activation and electromyography studies
- Motor Control and Adaptation
- Neural dynamics and brain function
- Functional Brain Connectivity Studies
- Neuroscience and Neural Engineering
- Primate Behavior and Ecology
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Action Observation and Synchronization
- Musicians’ Health and Performance
- Neural and Behavioral Psychology Studies
- Virtual Reality Applications and Impacts
- Diverse Music Education Insights
- Intraoperative Neuromonitoring and Anesthetic Effects
- Music Therapy and Health
- Attention Deficit Hyperactivity Disorder
- Sports Performance and Training
- Titanium Alloys Microstructure and Properties
- Cerebral Palsy and Movement Disorders
- Neuroscience and Music Perception
- Visual perception and processing mechanisms
- Vestibular and auditory disorders
- Spinal Cord Injury Research
- Behavioral and Psychological Studies
Keio University
2013-2025
RIKEN Center for Brain Science
2017-2024
Japan Science and Technology Agency
2019-2024
Hvidovre Hospital
2017-2023
Copenhagen University Hospital
2017-2023
The University of Tokyo
2017-2023
RIKEN Center for Biosystems Dynamics Research
2020
Japan Graduate School of Education University
2017-2019
There is increasing interest in electroencephalogram (EEG)-based brain-computer interface (BCI) as a tool for rehabilitation of upper limb motor functions hemiplegic stroke patients. This type BCI often exploits mu and beta oscillations EEG recorded over the sensorimotor areas, their event-related desynchronization (ERD) following imagery believed to represent increased cortex excitability. However, it remains unclear whether excitability actually correlated with ERD. Thus we assessed...
Summary Motor exploration, a key process in reinforcement-based motor learning, is triggered by suboptimal performance and leads to increased movement variability. Consequently, failure one trial may increase the likelihood of subsequent trials. If this pattern emerges, successive failures (SFs) are not merely events be avoided but part trial-and-error identifying optimal movements, which can facilitate learning. This study investigated whether how SFs occur above chance levels during...
The brain can be conceptualized as a control system facilitating transitions between states, such from rest to motor activity. Applying network theory measurements of signals enables characterization dynamics through properties, including controllability. However, most prior studies that have applied evaluated under unperturbed conditions, neglecting the critical role external perturbations in accurate identification, which is fundamental principle theory. incorporation perturbation inputs...
Background: Transcranial electrical stimulation (tES) has gained attention because of its potential to modulate human sleep physiology. However, efficacy in healthy populations remains unclear. Objectives: This systematic review and meta-analysis aimed evaluate the effects tES on adults. Methods: A comprehensive literature search was conducted across five electronic databases from January 5 10, 2023, retrieve articles administering evaluating The Cochrane Collaboration's tool used assess...
Key points The cortical mechanisms of grasping have been extensively studied in macaques and humans; here, we investigated whether common marmosets could rely on similar despite strong differences hand morphology grip diversity. We recorded electrocorticographic activity over the sensorimotor cortex two during execution different types, which allowed us to study (power spectrum) physiologically inferred connectivity (phase‐slope index). Analyses were performed beta (16–35 Hz) gamma (75–100...
Despite their disabilities, top Paralympic athletes have better motor skills than able-bodied athletes. However, the neural underpinnings of these remain unclear. We investigated reorganization primary cortex (M1) in a athlete with congenital amputation both arms who holds world record for farthest accurate shot archery (Amputee Archer: AA). recorded brain activity during contraction right toe, ankle, knee, and hip joint muscles AA 12 control subjects using functional magnetic resonance...
Single-pulse transcranial magnetic stimulation (TMS) of the precentral hand representation (M1HAND) can elicit indirect waves in corticospinal tract at a periodicity ∼660 Hz, called I-waves. These descending volleys are produced by transsynaptic excitation fast-conducting axons M1HAND. Paired-pulse TMS induce short-interval intracortical facilitation (SICF) motor evoked potentials (MEPs) interpulse intervals that match I-wave periodicity. This study examined whether short-latency engages...
Brain computer interfaces (BCIs) using event-related desynchronization (ERD) of the electroencephalogram (EEG), which is believed to represent increased activation sensorimotor cortex, have attracted attention as tools for rehabilitation upper limb motor functions in hemiplegic stroke patients. However, it remains unclear whether corticospinal excitability actually correlated with ERD. The purpose this study was assess association between ERD magnitude and primary cortex (M1) spinal...
Multimodal recording using electroencephalogram (EEG) and other biological signals (e.g., muscle activities, eye movement, pupil diameters, or body kinematics data) is ubiquitous in human neuroscience research. However, the precise time alignment of multiple data from heterogeneous sources (i.e., devices) often arduous due to variable parameters commercially available research devices complex experimental setups. In this review, we introduced versatility a Lab Streaming Layer (LSL)-based...
Background Electroencephalography (EEG) can capture the cortical response evoked by transcranial magnetic stimulation (TMS). The TMS pulse provokes a large artefact, which obscures in first milliseconds after TMS. Removing this artefact remains challenge. Methods We delivered monophasic and biphasic to melon as head phantom four healthy participants recorded at 5 kHz with TMS-compatible EEG system. Pulse delivery was either synchronized or non-synchronized clock of recording effects...
Background: Severe upper extremity paresis due to stroke is a significant clinical sequela. Neuromuscular electrical stimulation (NMES)-based rehabilitation has demonstrated promising results along with cortical plasticity. Transcranial alternating current (tACS) gained attention its unique ability entrain endogenous oscillatory brain rhythms injected AC frequency, offering the potential for modifying conditions enhance rehabilitative interventions. Because repetitive motor execution in...
During primate arboreal locomotion, substrate orientation modifies body axis and biomechanical contribution of fore- hindlimbs. To characterize the role cortical oscillations in integrating these locomotor demands, we recorded electrocorticographic activity from left dorsal premotor, primary motor, supplementary motor cortices three common marmosets moving across a branch-like small-diameter pole, fixed horizontally or vertically. Animals displayed behavioral adjustments to task, namely,...
Abstract Multimodal recording using electroencephalogram (EEG) and other biological signals (e.g., electromyograms, eye movement, pupil information, or limb kinematics) is ubiquitous in human neuroscience research. However, the precise time alignment of data from heterogeneous sources limited due to variable parameters commercially available research devices experimental setups. Here, we introduced versatility a Lab Streaming Layer (LSL)-based application for multimodal recordings...
Cortical stimulation mapping is a valuable tool to test the functional organization of motor cortex in both basic neurophysiology (e.g., elucidating process plasticity) and clinical practice before resecting brain tumors involving cortex). However, compilation maps based on threshold (MT) requires large number cortical stimulations therefore time consuming. Shortening for may reduce stress subjects unveil short-term plasticity mechanisms. In this study, we aimed establish procedure which...
Motor map has been widely used as an indicator of motor skills and learning, cortical injury, plasticity, functional recovery. Cortical stimulation mapping using epidural electrodes is recently adopted for animal studies. However, several technical limitations still remain. Test-retest reliability (ECS) not examined in detail. Many previous studies defined evoked movements thresholds by visual inspection, thus, lacked quantitative measurements. A reliable important to elucidate the...