Research in individuals with complete peripheral deafferentation with and without vision of their writing hand finds increase of number of pen touches, increase in number of inversions in velocity, decrease of mean stroke frequency and longer writing movement duration. The changes show that cutaneous and proprioceptive feedback play a critical role in updating the motor memories and internal models that underlie handwriting. In contrast, sight provides only a secondary role in adjusting motor commands.
research in individuals with complete peripheral deafferentation with and without vision of their writing hand finds increase of number of pen touches increase in number of inversions in velocity decrease of mean stroke frequency and longer writing movement duration the changes show that cutaneous and proprioceptive feedback play a critical role in updating the motor memories and internal models that underlie handwriting in contrast sight provides only a secondary role in adjusting motor commands