A finger-to-nose movement was performed to assess action tremor
. The movement was modeled and the participant was instructed to perform the movement at a comfortable pace until told to stop.
Postural or action tremors
can happen together with rest tremors, but with different frequencies.
His neurological exam demonstrated normal higher mental function, flat affect, masked-facies, normal cranial nerves, moderate rigidity in right arm, mild rigidity in left arm, bilateral bradykinesia on repetitive finger tapping, and mixed resting and action tremors
in the right and left hand.
The resting tremor in mRT differs obviously from the postural tremor or action tremor
Diagnoses of ET were not assigned in NAS; however, it was possible to assess action tremor
because participants produced drawings as part of cognitive tests that required them to copy different figures.
* Action Tremor
: Tremor produced during voluntary contraction of muscle that produces postural, isometric, kinetic, or intention tremor
The purpose of this case study was to characterize the effects of VIM DBS in a person diagnosed with PD who was tremor predominant and experiencing both resting and action tremor
, on the contralateral and ipsilateral control of force.
An action tremor
is any tremor occurring when muscles are contracted.
PD tremor, whether resting or action tremor
, is a highly variable symptom .
Risk of action tremor
in relatives of tremor dominant PD and postural instability gait disorder PD.
Essential tremor (ET) is a neurologic disease that is characterized by an action tremor
of the hands and/or head.
Esential tremor is faster than parkinsonian tremor (6 to 9 cycles per second), is primarily an action tremor
, and is usually bilateral.
Woods, Differentiation of Parkinson's Tremor from Essential Tremor using Action Tremor
Analysis, University of Otago, Dunedin, New Zealand, 2012.