2 kinds of motor perseveration in massive injury of the frontal lobes

Luria AR Brain 88:1-10 1965.



Luria's highest fame includes techniques devised to parse frontal lobe defects. Luria described motor perseveration with preserved intention and switching, but pathological inertia which he calls "efferent" perseveration of the motor periphery.

The second type is pathological inertia of the program of action. The initiated program becomes inert adn the patient cannot switch task but is stuck on the first. Syndrome is typically superimposed on aspontaneity. This is called inertia of a a previously recorded programme of action.

The first type is due to massive frontal injury extending to the subcortex.