Motor Control and Adaptation

Emergence of distinct neural subspaces in motor cortical dynamics during volitional adjustments of ongoing locomotion

The paper identifies distinct neural subspaces in motor cortex dynamics during obstacle avoidance, showing locomotion and volitional adjustments are separated into different subspaces.

Recalibrating vision-for-action requires years after sight restoration from congenital blindness

This study shows that individuals who regain sight later in life after congenital blindness have impaired visuomotor recalibration initially, but this ability improves with experience over time.

The brain integrates proprioceptive information to ensure robust locomotion

This study shows that ascending proprioceptive information from the spinal cord to the brain is essential for responding to external perturbations during locomotion.

How cerebellar architecture facilitates rapid online learning

This paper uses mathematical analysis and simulations to show that cerebellar architecture, specifically size expansions, helps overcome challenges in online learning of dynamic tasks by enabling dense granule cell activity.

Bounded rational decision-making models suggest capacity-limited concurrent motor planning in human posterior parietal and frontal cortex

The paper uses bounded rationality models to show that human posterior parietal and frontal cortex plan multiple motor actions concurrently, with capacity limits reflected in fMRI data.

Movement is governed by rotational population dynamics in spinal motor networks

The paper shows that spinal motor networks generate movement through rotational dynamics in neural activity rather than alternating activity, with rotation radius correlating to muscle force.

Control becomes habitual early on when learning a novel motor skill

The paper shows that habitual behavior emerges early in motor skill learning, even before skill proficiency is achieved.

Pupil diameter tracked during motor adaptation in humans

This study tracks pupil diameter during motor adaptation in humans to assess internal states like surprise and environmental uncertainty, finding distinct patterns for tonic and phasic pupil responses.

Contextual effects in sensorimotor adaptation adhere to associative learning rules

This study applies associative learning principles to sensorimotor adaptation, finding three key signatures of associative learning and a negative correlation consistent with the additivity principle.

Time-of-day effects on motor learning

This study shows that evening training leads to better skill consolidation compared to morning or afternoon training, with sleep contributing to this effect.

Visuomotor learning promotes visually evoked activity in the medial prefrontal cortex

This study shows that learning a visuomotor task increases visual stimulus-evoked activity in the medial prefrontal cortex, even during passive viewing.

Organization of reward and movement signals in the basal ganglia and cerebellum

The paper compares reward and movement signal coding in the basal ganglia and cerebellum using neural recordings from monkeys, finding stronger signals in the basal ganglia output structure.

Effect of repeated explicit instructions on visuomotor adaptation and intermanual transfer

This study examines how repeated explicit instructions affect visuomotor adaptation and intermanual transfer, finding no additional benefit from repeated instructions and significant correlations between awareness and transfer.

Perturbation variance suppresses error sensitivity in the implicit learning system

The paper evaluates how perturbation variance affects implicit error sensitivity in learning, finding that it reduces sensitivity while accounting for error size, contradicting an alternative view.

De novo motor learning of a bimanual control task over multiple days of practice

This study investigates de novo motor learning of a bimanual control task over multiple days, showing performance improvement and adaptation to perturbations without aftereffects.

A Third Somatomotor Representation in the Human Cerebellum

The paper provides direct evidence for a third somatomotor map in the human cerebellar vermis using fMRI scans of body movements.

Estimating the time structure of descending activation that generates movements at different speeds

The paper estimates descending activation patterns that generate human movements at different speeds, finding their temporal structure varies with movement speed and reflects compensation for biomechanical factors.

Practical scan-length considerations for mapping upper limb movements to the somatosensory/motor cortex at 7T

This study investigates how scan length affects motor cortex activation during upper limb movements in fMRI, finding diminishing returns with more runs and proposing variable run assignments for different movements.

Cerebellar GABA change during visuomotor adaptation relates to adaptation performance and cerebellar network connectivity: A Magnetic Resonance Spectroscopic Imaging study.

This study uses MRSI to show GABA changes in the cerebellum during visuomotor adaptation correlate with performance and network connectivity.

Whole-brain dynamics of human sensorimotor adaptation

The paper examines individual differences in sensorimotor adaptation by analyzing whole-brain functional network dynamics over two days of learning.

Motor Cortex Projections To Red Nucleus And Pons Have Distinct Functional Roles In The Mouse

The paper identifies distinct functional and anatomical roles of motor cortex projections to the red nucleus and pons in mice, showing differential contributions to motor performance.

Small, correlated changes in synaptic connectivity may facilitate rapid motor learning

The paper uses a network model to show that small, correlated changes in synaptic connectivity can explain motor learning without disrupting neural covariance, aligning with experimental observations.

Motor cortical influence relies on task-specific activity covariation

The paper shows that motor cortical activity covariation changes between tasks, driving distinct muscle activation patterns rather than relying on fixed flexion/extension programs or task-specific neuronal subsets.

A model predictive control strategy to regulate movements and interactions

This paper introduces a Model Predictive Control strategy that regulates both movement and interaction control, demonstrating its ability to produce human-like movements and handle nonlinear dynamics.

Handedness is associated with less common input to spinal motor neurons innervating different hand muscles

This study finds that the dominant hand has less common synaptic input between motor neurons innervating different muscles during isometric rotation tasks compared to the non-dominant hand.

Looking for a sign forecasting failure in actions: reaching errors triggered by a slowdown of movement and specific brain activity in preceding trials

The paper identifies behavioral and neural signs preceding movement failure in a reaching task, showing that reduced movement velocity and specific EEG activity occur before failures.

Separate and shared low-dimensional neural architectures for error-based and reinforcement motor learning

The paper investigates neural pathways for error-based and reinforcement motor learning using fMRI, finding distinct and shared architectures related to performance.

Internal states as a source of subject-dependent movement variability and their representation by large-scale networks

The paper identifies two internal states that influence movement variability and shows they are encoded by large-scale brain networks in humans.

Manual stabilization reveals a transient role for balance control during locomotor adaptation

This study investigates how balance control changes during locomotor adaptation to split-belt treadmill asymmetry, finding that external stabilization reduces initial deviations but not long-term adaptation.

Temporally stable beta sensorimotor oscillations and cortico-muscular coupling underlie force steadiness

The paper investigates cortico-muscular coupling during steady muscle force maintenance, finding temporally stable beta oscillations and their behavioral relevance.