Samuel J. Sober

This study investigates how motor unit firing patterns control locomotor speed in mice by analyzing single motor unit activity in specific muscles during walking.

EMUsort improves MUAP spike sorting accuracy by addressing challenges like long delays, complex waveforms, and high overlap in motor unit recordings.

This paper introduces Opto-Myomatrix, a device for optogenetic muscle activation and EMG recording, achieving high optical output and low electrode impedance.

This study shows that millisecond-scale spike timing codes for vocal acoustics exist throughout songbird vocal development, contradicting the hypothesis that rate-based coding transitions to timing-based coding during learning.

The paper investigates how motor cortex compensates for inertial load during locomotion in mice, finding that load induces significant cortical dynamics changes independent of motor output.

The paper introduces a flexible microelectrode array with integrated electronics to increase EMG channel density while reducing device size.

This paper introduces an optogenetic method for perturbing muscles in transgenic mice, enabling simultaneous EMG recording and optical stimulation to study neuromuscular control.

The paper introduces Myomatrix arrays, a high-resolution electrode technology for recording muscle activity from motor units across species during natural behaviors.

This study shows that non-auditory feedback can drive vocal learning in adult songbirds and that a specific brain pathway is necessary for both auditory and non-auditory vocal plasticity.

Treating neurons as independent gave about 46–96% false positives in simulated nested data; a hierarchical bootstrap stayed near 5% with many subjects and kept more power than per-subject averaging.

The paper identifies neuronal populations in songbirds that transition from preparatory activity to precise sequences during singing, revealing mechanisms for behavioral state transitions.

This study investigates how dopamine depletion affects vocal learning in songbirds by altering pitch and sensorimotor adaptation in response to auditory feedback.

The paper identifies thalamostriatal and cerebellothalamic pathways in the Bengalese finch, showing that specific thalamic regions project to the basal ganglia and striatum.