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Hatsopoulos, Nicholas G.
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overview Our research focuses on the cortical basis of motor control and learning. We are investigating what features of motor behavior are encoded and how this information is represented in the collective activity of large neuronal ensembles in the motor, premotor, and somatosensory cortices. We are also interested in what way these representations change as motor learning occurs. Our approach has been to simultaneously record neural activity from large groups of neurons using multi-electrode arrays while performing detailed kinematic, kinetic, and muscle measurements of goal-directed, motor behaviors, and to develop mathematical models that relate neural activity with behavior. These mathematical models provide insights as to what aspects of motor behavior are being encoded in cortical neurons, but also can be used to decipher or “decode” neural activity in order to predict movement which has practical implications for brain-machine interface development. Ultimately, this research may lead to neural prosthetic technologies that will allow people with spinal cord injury, ALS, or amputation to use brain signals to voluntarily control a device so as to interact with the world.
One or more keywords matched the following items that are connected to Hatsopoulos, Nicholas G.
Item TypeName
Concept Eye Movements
Concept Movement Disorders
Concept Movement
Academic Article Coupling the neural and physical dynamics in rhythmic movements.
Academic Article Information about movement direction obtained from synchronous activity of motor cortical neurons.
Academic Article Excess synchrony in motor cortical neurons provides redundant direction information with that from coarse temporal measures.
Academic Article On the sufficiency of the velocity field for perception of heading.
Academic Article Robustness of neuroprosthetic decoding algorithms.
Academic Article Sequential movement representations based on correlated neuronal activity.
Academic Article Evidence against a single coordinate system representation in the motor cortex.
Academic Article Superlinear population encoding of dynamic hand trajectory in primary motor cortex.
Academic Article Spatiotemporal tuning of motor cortical neurons for hand position and velocity.
Academic Article Congruent activity during action and action observation in motor cortex.
Academic Article Kinetic trajectory decoding using motor cortical ensembles.
Academic Article The science of neural interface systems.
Academic Article Fast and slow oscillations in human primary motor cortex predict oncoming behaviorally relevant cues.
Academic Article Toward a biomimetic, bidirectional, brain machine interface.
Academic Article Coordinate system representations of movement direction in the premotor cortex.
Academic Article Incorporating feedback from multiple sensory modalities enhances brain-machine interface control.
Academic Article Biomimetic brain machine interfaces for the control of movement.
Academic Article Statistical assessment of the stability of neural movement representations.
Academic Article Information transfer between neurons in the motor cortex triggered by visual cues.
Academic Article Synthesizing complex movement fragment representations from motor cortical ensembles.
Academic Article The problem of parametric neural coding in the motor system.
Academic Article Continuous decoding of intended movements with a hybrid kinetic and kinematic brain machine interface.
Academic Article Sensing with the motor cortex.
Academic Article Propagating waves mediate information transfer in the motor cortex.
Academic Article Neural decoding of hand motion using a linear state-space model with hidden states.
Academic Article Neural discharge and local field potential oscillations in primate motor cortex during voluntary movements.
Academic Article Is a virtual trajectory necessary in reaching movements?
Academic Article Neuronal interactions improve cortical population coding of movement direction.
Academic Article Instant neural control of a movement signal.
Academic Article Encoding in the motor cortex: was evarts right after all? Focus on "motor cortex neural correlates of output kinematics and kinetics during isometric-force and arm-reaching tasks".
Academic Article Encoding of movement fragments in the motor cortex.
Academic Article Encoding of coordinated grasp trajectories in primary motor cortex.
Academic Article Behavioral demonstration of a somatosensory neuroprosthesis.
Academic Article Compensating for delays in brain-machine interfaces by decoding intended future movement.
Academic Article Improving brain-machine interface performance by decoding intended future movements.
Academic Article Heterogeneous neural coding of corrective movements in motor cortex.
Academic Article Operant conditioning of a multiple degree-of-freedom brain-machine interface in a primate model of amputation.
Academic Article Differences in motor cortical representations of kinematic variables between action observation and action execution and implications for brain-machine interfaces.
Academic Article Temporal evolution of both premotor and motor cortical tuning properties reflect changes in limb biomechanics.
Academic Article Online adaptive decoding of intended movements with a hybrid kinetic and kinematic brain machine interface.
Academic Article Modulation dynamics in the orofacial sensorimotor cortex during motor skill acquisition.
Academic Article Primary motor and sensory cortical areas communicate via spatiotemporally coordinated networks at multiple frequencies.
Academic Article Spatio-Temporal Patterning in Primary Motor Cortex at Movement Onset.
Academic Article Resonance Tuning in Rhythmic Arm Movements.
Academic Article Properties of primary motor cortical local field potentials in the leg and trunk representations during arm movements.
Academic Article Perspectives on classical controversies about the motor cortex.
Academic Article Using monkey hand exoskeleton to explore finger passive joint movement response in primary motor cortex.
Academic Article Changes in cortical network connectivity with long-term brain-machine interface exposure after chronic amputation.
Academic Article Movement Decomposition in the Primary Motor Cortex.
Academic Article Propagating Motor Cortical Dynamics Facilitate Movement Initiation.
Academic Article Decoding hand kinematics from population responses in sensorimotor cortex during grasping.
Academic Article Neural population dynamics in motor cortex are different for reach and grasp.
Academic Article Chronic wireless neural population recordings with common marmosets.
Academic Article Loss of oral sensation impairs feeding performance and consistency of tongue-jaw coordination.
Academic Article Propagating spatiotemporal activity patterns across macaque motor cortex carry kinematic information.
Academic Article Interplay between external inputs and recurrent dynamics during movement preparation and execution in a network model of motor cortex.
Academic Article Propagating motor cortical patterns of excitability are ubiquitous across human and non-human primate movement initiation.
Academic Article Biomechanical and Cortical Control of Tongue Movements During Chewing and Swallowing.
Academic Article Microstimulation of human somatosensory cortex evokes task-dependent, spatially patterned responses in motor cortex.
Academic Article A dynamic subset of network interactions underlies tuning to natural movements in marmoset sensorimotor cortex.
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