J. Andrew Pruszynski

The paper shows spinal circuits can efficiently control hand movement during reaching, challenging the idea that supraspinal regions are solely responsible for such control.

This study investigates how far ahead people plan movements during a sequence task and finds that planning horizon expands with practice.

The paper shows how synaptic integration across first-order tactile neurons enables accurate and rapid orientation processing of moving edges on the fingertip.

This study shows that non-human primates adjust both feedforward and feedback control of arm dynamics when intersegmental dynamics are altered, as evidenced by changes in muscle activity and kinematic aftereffects.

This paper maps somatosensory responses in awake marmosets using fMRI, finding body representations in cortical and subcortical regions similar to Old World primates and humans.

The paper compares fMRI and electrophysiological data to explore how primary motor cortex organizes activity for finger flexion and extension, finding similar patterns for same-finger movements but distinct patterns in monkeys.

The paper compares voluntary modification of tactile-motor and visuo-motor responses during reaching tasks, finding that tactile feedback allows suppression of early motor responses.

This study demonstrates bidirectional transfer between feedforward and feedback motor control during learning, showing that feedback learning influences feedforward control.

This study shows that explicit feedback and instructions do not significantly enhance learning of shoulder muscle activity reduction after shoulder fixation.

This paper investigates whether learning to reduce shoulder muscle activity after shoulder fixation generalizes to new movement conditions and finds partial generalization across some parameters but not others.

This study shows that sensing an object slipping in the hand triggers rapid shoulder responses, which are modulated by slip direction and speed but not distance.

The paper investigates how humans modulate reflexes during self-triggered, unpredictable unloading perturbations, finding task-dependent reflex modulation that cannot be explained by pre-perturbation muscle state.

The paper shows that spinal stretch reflexes adjust based on hand displacement relative to a target, not muscle stretch, demonstrating efficient motor control through musculoskeletal redundancy.

This study shows that implicit motor learning, but not explicit strategies, influences the earliest neuromuscular activity during a rapid visuomotor response.

The paper tests the stability of representational geometry in fMRI data across varying activation levels in sensory-motor and visual regions, finding it remains consistent despite large changes in average activity.

The paper shows that feedforward and feedback control share an internal model of arm dynamics by demonstrating learning transfer between control mechanisms when intersegmental dynamics are altered.

This study investigates edge orientation perception during active touch, finding similar acuity to passive touch and a weak speed-performance link within participants.

This study shows that neural network models of the tactile system develop first-order units with spatially complex receptive fields across various architectures and training sets, improving performance in noisy conditions.

This study shows participants can quickly and accurately perceive edge orientation during object manipulation, with resolution better than 3 degrees and performance remaining high even with small edges.

The paper shows that task complexity affects the magnitude, not latency, of a circuit transforming visual input into motor actions, with a fixed 100 ms latency.

The paper shows that rapid feedback responses in arm muscles adapt to visuomotor transformations, supporting goal-directed reaching through flexible coordination.

The paper shows the nervous system predicts and compensates for intersegmental dynamics across shoulder, elbow, and wrist joints during reaching and reflexive movements.