CRNL seminar
Monday, July 6, 2015 - 11:00am

Denis Pélisson has invited Nicholas Holmes from the University of Nottingham to come and give a talk on:
 
"Online control of reaching, pointing and grasping in adults and children"
 
Since leaving Lyon in 2007, I have spent a lot of time thinking about the on-line control of reaching, pointing, and grasping movements. Although none of this work is published yet, I hope to change that in 2015. If you would like to be a reviewer of my future manuscripts, perhaps you will join me for this dinner seminar? Over dinner, I will provide a 'tasting menu' of some research findings since 2007. The menu includes vol-au-vents (lightly cooked, appetising, but ultimately unsatisfying), soupe a l'oignon (thin, and tasty), and boeuf (well-cooked, substantial). First: how should we measure correction latency using position, velocity, or acceleration data? Numerous methods are available. I have tried a LOT. The best (which procude the least variable results) seem to involve a model-fitting rather than threshold-exceeding approach. Second: can we correct movements to auditory targets as well as to visual targets? Yes. Third: can we correct movements to targets that start in one modality and switch modality as well as position at movement onset? Yes, but this seems to take about 20ms longer than movements to targets which stay within the same modality. Fourth: what is the time-scale of changes in corticospinal excitability that accompany the rapid on-line control of reaching and grasping movements? I don't know at the moment, but I hope to tell you in July! Fifth: can children control their grasping movements on-line, and if so, when does this skill develop and how do they compare to adults? Finally, how do other motor abilities correlate with on-line control performance? Although I know I cannot satisfy your hunger, I hope at least to create some interesting after-dinner discussion. Bon appetit!
 
Labo IMPACT - 16 avenue Doyen Lépine - conference room