Hiroshi Yamada

The paper uses hidden Markov modeling on whole-brain MEG data to show subsecond neural dynamics correlate with value-based decision variables in humans.

This study shows sustained visual signals in the primate cerebellar dentate nucleus are involved in visuomotor associative learning by enhancing discrimination of visual objects based on saccade direction.

The paper shows that fast-spiking neurons in monkey orbitofrontal cortex compute economic value more strongly than regular-spiking neurons due to their wider dynamic range.

The paper shows that visual information propagates as a heterogeneous mixture of stochastic neural population signals across brain-wide regions in monkeys.

The paper measures blood ghrelin and osmolality in monkeys to assess hunger and thirst states under controlled food and water access conditions.

This study identifies distinct roles of the orbitofrontal cortex, ventral striatum, and dopamine neurons in processing counterfactual outcomes during decision-making in monkeys.

This study compares neural population dynamics for continuous and categorical task parameters using state-space analysis and optimal-stimulus paradigms in visual recognition tasks.

This study shows that single-neuron activity in monkeys' reward circuitry reflects prospect theory parameters for risky gambles, with distributed coding across brain regions.

This paper combines prospect theory and reinforcement learning to model gambling behavior in monkeys, finding that probability weighting changes dynamically with reward prediction error.

This study shows that dopamine neurons use a tonic firing mode to continuously track changing reward values in real time.

The paper investigates neural dynamics in reward-related brain regions during expected value computation, finding distinct temporal patterns in orbitofrontal cortex and ventral striatum.

This study shows that tonically active neurons in monkey dorsal striatum signal reward and no-reward feedback during trial-and-error search behavior, but not during repeat trials.