Alaa A. Ahmed

This study shows that locomotor adaptation changes the structure of stride-to-stride regulation of center of mass error dynamics, which persists upon re-exposure to split-belt conditions.

This study shows that movement vigor tracks reward prediction error and reward expectation, linking dopaminergic signals to motor control across multiple time scales.

This study investigates whether task effort affects learning and adaptation in a split-belt walking task, finding no significant effect of effort on adaptation processes.

The paper investigates how reward affects isometric gripping actions, finding that reward increases force generation speed and magnitude without compromising accuracy.

The paper investigates how humans prefer to invest physical effort over time in an isometric task and finds that effort is preferred earlier, supported by a subjective utility model.

The paper investigates how metabolic cost and accuracy constraints interact to influence reaching movement speed, finding that preferred speeds are slower than metabolically optimal.

The paper investigates whether age-related reduction in movement vigor is due to decreased reward valuation or increased effort costs, finding that older adults expend more energy during reaching and show less reward sensitivity.

This paper shows that older adults may learn as much as younger adults but exhibit larger errors due to higher effort costs, challenging the assumption that greater errors equate to less learning.

The paper shows that saccade velocity during deliberation reflects the subjective value of effortful choices, even when the movement itself does not influence the decision.

This study shows that reward history influences both decision-making duration and movement speed in foraging tasks.

The paper shows that saccade vigor correlates with subjective value of visual stimuli, but only partially predicts choice behavior.