From discrete to continuous online limb-target regulation processes: A matter of time?

A pseudo-continuous model of online sensorimotor control suggests that visual information is gathered from peak acceleration until movement end (Elliott et al., 2010). Although seminal evidence for the model employed relatively slow movements, Tremblay et al. (2013; 2017) have provided evidence for optimal online visual information utilization during early stages of fast reaching movements (i.e., ~350 ms). The current study examined the generalizability of these results to faster and slower reaching movements (i.e., 350 ms or 700 ms). During reaching movement participants were provided with a 20 ms window of visual information (i.e., at 35%, 60% or, 85% of PV) and a target-jump manipulation. Overall, the strategy to implement a single correction was supported for faster movements, whereas the pseudo-continuous model (Elliott et al., 2010) was supported for slower movements. Theoretically, online visual uptake strategies could be merely dependent on the time available for utilization and implementation of amendments.M.Sc