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Updated: Jun 27, 2026

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Measurement & Analysis of the Temporal Discrimination Threshold Applied to Cervical Dystonia

Published on: January 27, 2018

Reverse sensory geste in cervical dystonia.

Friedrich Asmus¹, Rainer von Coelln, Axel Boertlein

¹Department of Neurodegenerative Diseases, Center of Neurology, Hertie-Institute for Clinical Brain Research, Tuebingen, Germany. friedrich.asmus@dystonia-genetics.com

Movement Disorders : Official Journal of the Movement Disorder Society

|December 17, 2008

Summary

This summary is machine-generated.

Sensory gestures typically ease cervical dystonia (CD) symptoms. However, some patients experience worsening symptoms with sensory input, a phenomenon termed "reverse" sensory geste (rSG), impacting treatment.

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Area of Science:

Neurology
Movement Disorders
Neuroscience

Background:

Sensory gestures (SG) are characteristic signs in cervical dystonia (CD), often providing temporary relief.
CD affects the neck muscles, causing involuntary movements and postures.

Observation:

A novel phenomenon, "reverse" sensory geste (rSG), was observed where sensory input worsened CD.
This worsening occurred with specific sensory stimuli to the head and neck in various body positions.

Findings:

A prevalence of 12.8% for rSG was identified in a cohort of 47 CD outpatients.
The most common rSG pattern involved increased dystonic activity when lying down, attempting to sleep.
The persistent nature of rSG suggests a central processing issue in neck proprioception.

Implications:

Routine assessment for rSG in CD patients is recommended.
Identifying rSG may necessitate adjustments to botulinum toxin (BTX) treatment strategies for optimal efficacy.
Understanding rSG can refine the diagnosis and management of cervical dystonia.