As usual with the start of the new term, class schedules necessitate changes in when we meet: Sensorimotor Journal Club will now meet on Fridays at 3pm. We will not meet tomorrow, but will have our first Friday meeting a week from tomorrow on Sept 7th, when I will discuss a review paper by Emo Todorov:
Todorov, E. (2004). Optimality principles in sensorimotor control. Nature Neuroscience, 7(9), 907-915. (link to pdf of article)
The sensorimotor system is a product of evolution, development, learning and adaptation-which work on different time scales to improve behavioral performance. Consequently, many theories of motor function are based on 'optimal performance': they quantify task goals as cost functions, and apply the sophisticated tools of optimal control theory to obtain detailed behavioral predictions. The resulting models, although not without limitations, have explained more empirical phenomena than any other class. Traditional emphasis has been on optimizing desired movement trajectories while ignoring sensory feedback. Recent work has redefined optimality in terms of feedback control laws, and focused on the mechanisms that generate behavior online. This approach has allowed researchers to fit previously unrelated concepts and observations into what may become a unified theoretical framework for interpreting motor function. At the heart of the framework is the relationship between high-level goals, and the real-time sensorimotor control strategies most suitable for accomplishing those goals.