The spasticity represents a sensory-motor disorder. Spams and clonus are two patholigcal movements present in subject with spasticity. These diseases may be caused by CNS lesions like Cerebrovascular Accidents or Spinal Cord Injuries (SCI). Technological aids for rehabilitation and compensation after CVA or SCI have to deal with these sudden involuntary movements or contraction. In this work we present a spasm evocation protocol to generate same kinematic behavior in healthy people in order to study potential solutions for neurorrobotics aids.