Alleviation of Tinnitus With High-Frequency Stimulation of the Dorsal Cochlear Nucleus: A Rodent Study

Gusta van Zwieten*, Ali Jahanshahi, Marlieke L. van Erp, Yasin Temel, Robert J. Stokroos, Marcus L. F. Janssen, Jasper Smit

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Web of Science)

Abstract

Deep brain stimulation of the central auditory pathway is emerging as a promising treatment modality for tinnitus. Within this pathway, the dorsal cochlear nucleus (DCN) plays a key role in the pathophysiology of tinnitus and is believed to be a tinnitus generator. We hypothesized that high-frequency stimulation (HFS) of the DCN would influence tinnitus-related abnormal neuronal activity within the auditory pathway and hereby suppress tinnitus. To this end, we assessed the effect of HFS of the DCN in a noise-induced rat model of tinnitus. The presence of tinnitus was verified using the gap prepulse inhibition of the acoustic startle response paradigm. Hearing thresholds were determined before and after noise trauma by measuring the auditory brainstem responses. In addition, changes in neuronal activity induced by noise trauma and HFS were assessed using c-Fos immunohistochemistry in related structures. Results showed tinnitus development after noise trauma and hearing loss ipsilateral to the side exposed to noise trauma. During HFS of the DCN, tinnitus was suppressed. There was no change in c-Fos expression within the central auditory pathway after HFS. These findings suggest that DCN-HFS changes patterns of activity and results in information lesioning within the network and hereby blocking the relay of abnormal tinnitus-related neuronal activity.

Original languageEnglish
Article number2331216519835080
Pages (from-to)1-10
Number of pages10
JournalTrends in hearing
Volume23
DOIs
Publication statusPublished - 14 Mar 2019

Keywords

  • tinnitus
  • deep brain stimulation
  • dorsal cochlear nucleus
  • GPIAS
  • c-Fos
  • DEEP BRAIN-STIMULATION
  • BLAST-INDUCED TINNITUS
  • ELECTRICAL-STIMULATION
  • ACOUSTIC-TRAUMA
  • INFERIOR COLLICULUS
  • AUDITORY-CORTEX
  • HYPERACTIVITY
  • STEM
  • HEARING
  • SUPPRESSION

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