The common finding of increased bilateral activation and additional activation in the frontocentral cortex (supplementary motor area region) lead to the conclusion that there is an increased need for cognitive control of simple motor tasks in old age [40].
The PDMS-2 is widely accepted for the assessment of simple motor development; abnormal results in the PDMS may indicate movement retardation and cerebral palsy but it must be noted that all children identified to have movement retardation do not meet the defined criteria for cerebral palsy.
Many researchers seek to fit dynamical models to human coordination of simple motor tasks.
Simple examples abound: for instance, human emotional response involves both a fast archaic loop bypassing the cortex, and a slower cortical loop; motion control architecture in vertebrates is believed to involve combinations of simple motor primitives.
It is responsible not only for relatively simple motor behaviors like running and eating, but also for complex acts that we consider quintessentially human, like thinking, speaking and creating works of art.
For this relatively simple motor planning task, one should expect to identify activated areas involved mainly in the dorsal visuomotor stream as the specific action is underlain by a 'goal-directed' rather than a 'matching' representation [Milner and Dijkerman, 2002; Prinz and Hommel, 2002].
Movement times were also included as parametric regressors to account for variance associated with simple motor activations.
To further demonstrate the feasibility of the Ncoef maps, real data for two subjects from a simple motor planning MEG experiment was used.
The monkeys began the training period (ca. 6 months for each monkey) by learning a simple motor task (further used during subsequent recording sessions as a motor control test), in which they had to touch a black target displayed randomly in left, middle or right screen positions.
At the same time, though, he had deep disabilities and relied on his father Fran for help dressing, brushing his hair and other simple motor skills.
