Kimitaka Nakazawa
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View article: Quantitative assessment of signal quality and usability of EEG and EMG recordings with PEDOT:PSS-coated microneedle electrodes
Quantitative assessment of signal quality and usability of EEG and EMG recordings with PEDOT:PSS-coated microneedle electrodes Open
Introduction Bioelectrical signals are vital indicators of physiological function, psychological status, and clinical conditions. However, traditional wet electrodes using conductive gel are time-consuming, labor-intensive, and degrade ove…
View article: Facilitation of supplementary motor area activity modulates the sense of effort: a theta burst stimulation study
Facilitation of supplementary motor area activity modulates the sense of effort: a theta burst stimulation study Open
The sense of effort, defined as the phenomenological experience of invested physical resources in the task, is a critical component of motor control. The supplementary motor area (SMA) has been implicated in generating this sense, yet it r…
View article: Musicianship and active musical engagement predict facilitation of auditory-motor plasticity: evidence from auditory-motor paired associative stimulation
Musicianship and active musical engagement predict facilitation of auditory-motor plasticity: evidence from auditory-motor paired associative stimulation Open
Background and Aim Auditory–motor paired associative stimulation (PAS) probes experience-dependent plasticity in auditory–motor circuits. We tested whether musical experience and musical sophistication modulate PAS-induced facilitation whe…
View article: Affective dimensions of emotional memory shape corticospinal excitability in the upper and lower limbs in young males
Affective dimensions of emotional memory shape corticospinal excitability in the upper and lower limbs in young males Open
View article: Biofeedback training can enhance esports players’ shooting performance in an aiming task: focusing on cortical activity and gaze movement
Biofeedback training can enhance esports players’ shooting performance in an aiming task: focusing on cortical activity and gaze movement Open
View article: Developmental Reorganization of Whole-Body Muscle Synergies During Overarm Throwing in Children
Developmental Reorganization of Whole-Body Muscle Synergies During Overarm Throwing in Children Open
Overarm throwing is a uniquely human skill that requires precise whole-body coordination. Although throwing behavior emerges early in childhood, the neuromuscular mechanisms that support its development remain poorly characterized. Here, w…
View article: Developmental changes in upper limb muscle synergies during throwing: A comparison between preschoolers and schoolers
Developmental changes in upper limb muscle synergies during throwing: A comparison between preschoolers and schoolers Open
Throwing is a fundamental motor behavior that undergoes marked refinement during childhood, yet the neuromuscular mechanisms underlying this process remain unclear. We compared upper limb muscle synergies in preschool-aged (3-5 years; n…
View article: Effects of arousal and valence on standing kinematics and kinetics in young men: An approach using a motion capture system
Effects of arousal and valence on standing kinematics and kinetics in young men: An approach using a motion capture system Open
The emotional impact on body kinematics and kinetics during quiet standing was investigated using a motion capture system. Twenty‐two participants stood on a force plate while viewing affective pictures for 72 s. The task was repeated six …
View article: Quantitative Assessment of Signal Quality and Usability of EEG and EMG recordings with PEDOT:PSS-Coated Microneedle Electrodes
Quantitative Assessment of Signal Quality and Usability of EEG and EMG recordings with PEDOT:PSS-Coated Microneedle Electrodes Open
Background: Bioelectrical signals are vital indicators of physiological function, psychological status, and clinical conditions. However, traditional wet electrodes using conductive gel are time-consuming, labor-intensive, and degrade over…
View article: Binding Energy of 3ΛH and 4ΛH via Image Analyses of Nuclear Emulsions Using Deep-Learning
Binding Energy of 3ΛH and 4ΛH via Image Analyses of Nuclear Emulsions Using Deep-Learning Open
Subatomic systems are pivotal for understanding fundamental baryonic interactions, as they provide direct access to quark-level degrees of freedom. In particular, the inclusion of a strange quark introduces strangeness as a new dimension, …
View article: Coordinate System Transformation Method for Comparing Different Types of Data in Different Dataset Using Singular Value Decomposition
Coordinate System Transformation Method for Comparing Different Types of Data in Different Dataset Using Singular Value Decomposition Open
View article: Muscle Synergies in Single-Leg Hops: Neuromuscular Adaptations for Increased Hop Distance
Muscle Synergies in Single-Leg Hops: Neuromuscular Adaptations for Increased Hop Distance Open
This study investigated differences in muscle synergies in the trunk and lower limbs during single-leg hops at 30% (SLH30) and 100% (SLH100) of maximum distance to understand the neuromechanical mechanisms underlying longer hop distances. …
View article: Modulation of individual and synchronized activities of ankle plantarflexors during quiet standing in aroused emotions
Modulation of individual and synchronized activities of ankle plantarflexors during quiet standing in aroused emotions Open
View article: Stable Enhancement of Corticospinal Excitability by the Combination of Paired Associative Stimulation and Interlimb Cortical Network
Stable Enhancement of Corticospinal Excitability by the Combination of Paired Associative Stimulation and Interlimb Cortical Network Open
Inter‐individual variability is a common issue of noninvasive brain stimulation. This study aimed to augment neuroplasticity induced by paired associative stimulation (PAS) through leveraging interlimb neural interactions. Specifically, we…
View article: Somatosensory influence on auditory cortical response of self-generated sound
Somatosensory influence on auditory cortical response of self-generated sound Open
View article: Posture‐Dependent Modulation of Interoceptive Processing in Young Male Participants: A Heartbeat‐Evoked Potential Study
Posture‐Dependent Modulation of Interoceptive Processing in Young Male Participants: A Heartbeat‐Evoked Potential Study Open
Interoception, the internal perception of bodily states such as heartbeat and hunger, plays a crucial role in shaping cognitive and emotional states. Since postural control affects cognitive and emotional processing, exploring postural eff…
View article: Dose Duration Effect of Concurrent and Synchronized Motor Cortex Theta Burst Stimulation and Upper-Limb Neuromuscular Electrical Stimulation
Dose Duration Effect of Concurrent and Synchronized Motor Cortex Theta Burst Stimulation and Upper-Limb Neuromuscular Electrical Stimulation Open
View article: Exploring the effects of attention to body parts on upper-limb corticospinal excitability
Exploring the effects of attention to body parts on upper-limb corticospinal excitability Open
View article: Plasticity changes in left dorsolateral prefrontal cortex-M1 projection associated with impulsive decision-making
Plasticity changes in left dorsolateral prefrontal cortex-M1 projection associated with impulsive decision-making Open
View article: Effects of theta burst transcranial magnetic stimulation to the dorsolateral prefrontal cortex on upper-limb motor output characteristics and corticospinal excitability in healthy individuals
Effects of theta burst transcranial magnetic stimulation to the dorsolateral prefrontal cortex on upper-limb motor output characteristics and corticospinal excitability in healthy individuals Open
View article: Affective Dimensions of Emotional Memory Shape Corticospinal Excitability in the Upper and Lower Limbs
Affective Dimensions of Emotional Memory Shape Corticospinal Excitability in the Upper and Lower Limbs Open
View article: Biofeedback Training Can Enhance the Performance Level of Esports Players: Focusing on Cortical Activity and Gaze Movement
Biofeedback Training Can Enhance the Performance Level of Esports Players: Focusing on Cortical Activity and Gaze Movement Open
View article: Robust Enhancement of corticospinal excitability by the combination of paired associative stimulation and interlimb cortical network
Robust Enhancement of corticospinal excitability by the combination of paired associative stimulation and interlimb cortical network Open
View article: M/EEG source localization for both subcortical and cortical sources using a convolutional neural network with a realistic head conductivity model
M/EEG source localization for both subcortical and cortical sources using a convolutional neural network with a realistic head conductivity model Open
While electroencephalography (EEG) and magnetoencephalography (MEG) are well-established noninvasive methods in neuroscience and clinical medicine, they suffer from low spatial resolution. Electrophysiological source imaging (ESI) addresse…
View article: Visual Recognizability Evaluation for Brand Logos Using Covert Eye Tracking (CovET) Combined with a Go/No-go Task
Visual Recognizability Evaluation for Brand Logos Using Covert Eye Tracking (CovET) Combined with a Go/No-go Task Open
View article: Accurate digitization of EEG electrode locations by electromagnetic tracking system: The proposed head rotation method and comparison against optical system
Accurate digitization of EEG electrode locations by electromagnetic tracking system: The proposed head rotation method and comparison against optical system Open
View article: Reciprocal inhibition of the thigh muscles in humans: A study using transcutaneous spinal cord stimulation
Reciprocal inhibition of the thigh muscles in humans: A study using transcutaneous spinal cord stimulation Open
Evaluating reciprocal inhibition of the thigh muscles is important to investigate the neural circuits of locomotor behaviors. However, measurements of reciprocal inhibition of thigh muscles using spinal reflex, such as H‐reflex, have never…
View article: Effects of arousal and valence on center of pressure and ankle muscle activity during quiet standing
Effects of arousal and valence on center of pressure and ankle muscle activity during quiet standing Open
Emotion affects postural control during quiet standing. Emotional states can be defined as two-dimensional models comprising valence (pleasant/unpleasant) and arousal (aroused/calm). Most previous studies have investigated the effects of v…
View article: Direction-Specific Changes in Trunk Muscle Synergies in Individuals With Extension-Related Low Back Pain
Direction-Specific Changes in Trunk Muscle Synergies in Individuals With Extension-Related Low Back Pain Open
Background Identifying altered trunk control is critical for treating extension-related low back pain (ERLBP), a common subgroup classified by clinical manifestations. The changed coordination of trunk muscles within this group during part…
View article: Changes in muscle coordination patterns during 400‐m sprint: Impact of fatigue and performance decline
Changes in muscle coordination patterns during 400‐m sprint: Impact of fatigue and performance decline Open
The purpose of this study was to compare the muscle synergies extracted from 14 unilateral lower‐limb and trunk muscles between the first and final parts of a 400‐m sprint in experienced sprinters to understand neuromuscular coordination o…