Mohammad Amin Fakharian

Coordination of spike timing among the neurons of the cerebellum

The paper investigates how electrical coupling among inhibitory neurons in the cerebellum coordinates spike timing to enhance temporal precision in downstream neurons.

A vector calculus for neural computation in the cerebellum

The paper tests null space theory in marmoset cerebellum by showing Purkinje cell spikes cancel when perpendicular to movement, using spike-triggered averaging and population activity analysis.

Control of tongue movements by the Purkinje cells of the cerebellum

This study investigates how Purkinje cells in the cerebellum control tongue movements in marmosets by suppressing their activity during specific phases of movement.

The olivary input to the cerebellum dissociates sensory events from movement plans

The paper investigates how the inferior olive informs Purkinje cells about sensory events and movement plans in marmosets, revealing two distinct groups with different spike patterns related to movement control.

Rejuvenating silicon probes for acute electrophysiology

The paper rejuvenates silicon probes by stripping and recoating their polymer coating, restoring signal quality after degradation from repeated use.

Effort cost of harvest affects decisions and movement vigor of marmosets during foraging

The paper shows that increased effort cost of harvest in marmosets leads to longer work duration, reduced movement vigor, and pupil constriction, suggesting a coordinated neural response to optimize fitness.

Complex spikes perturb movements, revealing the sensorimotor map of Purkinje cells

The paper shows that complex spikes in Purkinje cells alter saccadic eye movements by pulling them toward the visual space preferred by the olivary input to those cells.

Stimulus presentation can enhance spiking irregularity across subcortical and cortical regions

The paper introduces a method to estimate neural variability components and finds that spiking irregularity can increase after stimulus presentation, reducing the quenching of the fano-factor.

Synchronous spiking of cerebellar Purkinje cells during control of movements

This study shows that cerebellar Purkinje cells use spike synchronization, not firing rates, to signal when to stop saccadic eye movements in marmosets.

P-sort: an open-source software for cerebellar neurophysiology

P-sort is an open-source software that improves spike detection and attribution in cerebellar Purkinje cells by merging and splitting clusters based on statistical relationships between simple and complex spikes.

Object novelty and value coding segregate across functionally connected brain networks

The paper uses fMRI in macaques to show that novelty and value coding segregate across functionally connected brain networks, with distinct patterns in ventral temporal, parietal, and TP networks.