Effects of vibration on cutaneous silent period

  • Şenay AydınEmail author
  • Markus Kofler
  • Yeliz Bakuy
  • Ayşegül Gündüz
  • Meral E. Kızıltan
Research Article


Suppression of an ongoing muscle contraction following noxious digital stimulation is called cutaneous silent period (CSP) which is under the influence of several physiological factors. In this study, we aimed to evaluate the influence of group Ia afferents on the cutaneous silent period (CSP) by applying 2-min vibration. CSP was obtained from abductor pollicis brevis muscle after stimulating index finger. The recordings were repeated three times—before, during and after vibration—which was applied over the tendon of flexor carpi radialis muscle. Onset latency, duration and magnitude of total CSP, inhibitory phases I1 and I2, and of the long-loop reflex were measured and compared. Suppression indices of CSP, I1 and I2 increased significantly during and after vibration, indicating significantly less exteroceptive EMG suppression outlasting the time of vibration. Vibration also caused mild shortening of I2 end latency (p = 0.048) and I2 duration (p = 0.019). Our findings indicate that vibration exerts a powerful influence on CSPs and causes reduction in the magnitude of exteroceptive EMG suppression during and after vibration. Although vibration is known to activate Ia afferents, we cannot exclude contribution of other afferents, e.g. mechanoreceptors, as well as pre- or postsynaptic inhibitory effects on ensuing interneurons, or enhanced vibration-related excitatory influence.


Cutaneous silent period Vibration Group Ia afferent fibers Alpha motoneuron A delta fiber Exteroceptive suppression 



All authors wish to thank all the volunteers who agreed to participate in the study.



Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

We confirm that we have read the Journal’s position on issues involved in ethical publication and affirm that this report is consistent with those guidelines.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of NeurologyYedikule Chest Diseases and Chest Surgery Training and Research HospitalIstanbulTurkey
  2. 2.Department of Neurology, Cerrahpasa Medical FacultyIstanbul University-CerrahpasaIstanbulTurkey
  3. 3.Department of NeurologyHochzirl HospitalZirlAustria

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