is an effect observed in some individuals where whilst they may be able to instigate a motor function, such as rolling the tongue, they are unable to maintain that posture.

MOTOR IMPERSISTENCE: "Motor impersistence is an inability to complete a certain motor function, for example rolling ones tongue and hold it in that position."
Cite this page: N., Pam M.S., "MOTOR IMPERSISTENCE," in, April 7, 2013, (accessed July 12, 2020).