Benjamin Parrell

This paper introduces a method for generating sparse stimuli to improve reverse correlation efficiency and interpretability, showing benefits in reconstruction quality, sample size efficiency, and subjective interpretability.

This study shows that cerebellar motor functions remain preserved in older adults despite structural degeneration, while non-cerebellar sensorimotor functions decline with age.

The paper develops a computational model to test cerebellar functions in speech feedback control, finding that internal modeling, timing dynamics, and multimodal integration explain speech abnormalities in cerebellar degeneration.

This study shows that speech adaptation occurs in response to auditory prediction errors even when no movement is executed, challenging models that rely on corrective motor commands.

This study shows that individuals with cerebellar ataxia fail to adapt vocal pitch to external perturbations, suggesting a critical cerebellar role in pitch control, but not in online compensation.

This study investigates how different subject instructions affect the quality of auditory representation characterization using reverse correlation, finding that detecting a hidden signal in stimuli yields the best reconstruction.

This study examines how theta-burst stimulation over primary somatosensory cortex affects tactile acuity of the tongue, finding that cTBS impairs spatial acuity while iTBS improves it.

This study shows that altering perceived variability can modulate neural sensitivity to auditory errors during speech production, supporting error-based learning mechanisms.

This paper uses sensorimotor adaptation to increase vowel contrast and intelligibility in speech, showing that these changes persist and improve communication.

This paper uses Bayesian inference to estimate parameters of a state feedback control model for vocal pitch in cerebellar ataxia and healthy controls, finding differences in feedback sensitivity and motor response.

This paper applies compressive sensing to reverse correlation to reduce the number of stimulus-response pairs needed for cognitive representation reconstruction without bias.

This study investigates how variability in speech production is regulated by manipulating auditory feedback, showing that both inward and outward perturbations lead to increased variability through distinct mechanisms.

This paper improves reverse correlation efficiency using stimulus whitening, achieving greater than 85% efficiency improvement and two-to-five-fold accuracy increase in simulations.

This study shows that a single exposure to altered auditory feedback leads to immediate sensorimotor adaptation in speech, supporting theories of direct internal model updates.

This study investigates how cerebellar degeneration affects feedforward and feedback control in reaching and speech tasks, finding impaired feedforward control but preserved feedback control.

This study investigates whether reinforcement learning can drive changes in speech behavior and finds that auditory feedback enhances learning even without explicit imitation.

The FACTS model replicates human speech motor control by integrating state estimation and task-based control, showing robustness to noise and feedback loss.

This paper reviews speech motor control models, comparing their architectures and properties, highlighting differences in control mechanisms and commonalities in higher-level planning and feedback use.