Hisham Y. Elseweifi

The paper shows climbing fibers in the cerebellum encode the gradient of a loss function, solving the credit assignment problem by scaling error with reward prediction errors.

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.

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