Research in Vestibular Science

Jae Jin Song

4 Articles

Functional Neuroimaging in Neuro-Otology: Jae Jin Song; Res Vestib Sci. 2016;15(1):5-10.

Abstract PDF: Neuro-otologic symptoms such as dizziness, hearing loss, or tinnitus give rise to peripheral change-induced neuroplasticity or central pathology-induced structural or functional changes. In this regard, functional neuroimaging modalities such as positron emission tomography (PET), functional magnetic resonance imaging (fMRI), magnetoencephalography (MEG), quantitative electroencephalography (qEEG), or functional near infrared spectroscopy have provided researchers with possibility to observe neuro-otologic disease-induced central functional changes. Among these methods, PET and fMRI are advantageous over qEEG or MEG with regard to spatial resolution, while qEEG and MEG are advantageous over PET or fMRI with regard to temporal resolution. Also, fMRI or MEG is not suitable for patients with implanted devices, whereas PET is not ideal for repetitive measures due to radiation hazard. In other words, as these modalities are complementary to one another, researchers should choose optimum imaging modality on a case by case basis. Hereinafter, representative functional neuroimaging modalities and their application to neuro-otologic research will be summarized.

Multicenter Study on the Clinician’s Diagnostic and Therapeutic Approaches for Benign Paroxysmal Positional Vertigo in Korea: Eun Ju Jeon, Won Ho Chung, Jeong Hwan Choi, Eui Cheol Nam, Hong Ju Park, Jong Dae Lee, Won Sang Lee, Kyu Sung Kim, Eui Kyung Goh, Ja Won Koo, Min Bum Kim, Min Beom Kim, Se Hyung Kim, Young Jin Kim, Chang Hee Kim, Sung Il Nam, Seog Kyun Mun, Ga Young Park, Sang Yoo Park, Shi Nae Park, Chang Hoon Bae, Sung Hyun Boo, Myung Whan Suh, Jae Hyun Seo, Eun Jin Son, Jae Jun Song, Jae Jin Song, Joong Wook Shin, Dae Bo Shim, Seong Ki Ahn, Hye Youn Youm, Shin Young Yoo, Dong Hee Lee, Seung Hwan Lee, Chang Ho Lee, Hyun Seok Lee, Hwan Ho Lee, Hyo Jeong Lee, Yun Hoon Choung, Seung Hyo Choi, Jee Sun Choi, Seok Min Hong, Sung Kwang Hong; Res Vestib Sci. 2013;12(3):79-92.

Abstract: Background and Objectives: It is necessary to establish the most efficient diagnostic and therapeutic method for benign paroxysmal positional vertigo (BPPV), which is appropriate for Korean healthcare system. We aimed to evaluate current state of Korean clinician’s diagnostic and therapeutic approaches for BPPV. Materials and Methods: A 16-item survey was emailed to the members of dizziness department of Otology Research Interest Group in the Korean Otologic Society (n=68). 43 were returned and analyzed. Results: All respondents (100%) used Dix-Hallpike test as a diagnostic tool for vertical canal-BPPV. Supine roll test was used for diagnosing lateral canal BPPV in nearly all the respondents (97.7%). Epley maneuver was chosen as otolith repositioning maneuver (ORM) for posterior canal BPPV in all respondents and barbecue rotation (BBQ) was used for treating lateral canal BPPV with geotropic nystagmus in 95.3% of respondents. Extreme variation was noted for therapeutic approach of lateral canal BPPV with ageotropic nystagmus BBQ, with 4 kinds of ORM and adjunctive measures to liberate otolith from cupula, while BBQ was again the most commonly used ORM (76.7%). Conclusion: The development of practical and efficient ORM for lateral canal BPPV with ageotropic nystagmus is necessary.

Horizontal Canal Benign Paroxysmal Positional Vertigo in Caloric Dead Labyrinth: Jae Jin Song, Yong Hwi Ahn, Ji Soo Kim, Ja Won Koo; J Korean Bal Soc. 2006;5(1):63-69.

Abstract PDF: The presence of functioning semicircular canal is regarded as a prerequisite for the development of benign paroxysmal positional vertigo (BPPV) since BPPV is irritative vestibulopathy. However, authors experienced a case of horizontal semicircular canal BPPV in which bithermal caloric test and ice water test were compatible with complete canal paralysis. Forty eight year-old man visited ER for sudden onset of vertigo and right hearing loss developed 3hours and 4 hours ago, respectively. Vertigo was vaguely complained and was floating in nature, which was aggravated with head position change. Initial audiometry showed 110 dB on pure tone averages. Positional test showed horizontal geotropic direction changing positional nystagmus and it was compatible with canalolithias of right horizontal semicircular canal. The results of initial and follow up bithermal caloric tests and ice water test on supine and prone position were compatible with right side complete canal paralysis. This case implies that caloric dead labyrinth may not represent complete absence of the lateral semicircular canal function and also BPPV can be developed even in a condition with minimal functional remaining. Key Words : Positional vertigo, Caloric test

Bell’s Palsy associated with Acute Vestibulopathy: Ja Won Koo, Jae Jin Song, Dong Yeop Chang, Ji Soo Kim; J Korean Bal Soc. 2005;4(2):259-263.

Abstract PDF: Bell’s palsy is acute idiopathic peripheral facial nerve palsy which is diagnosed after all the possible causes are ruled out. Several symptoms and signs of polyneuropathy, such as hypesthesia of cranial nerve IX or V, vagal motor weakness, retroauricular pain, and hearing impairment were frequently accompanied with Bell’s palsy. However, association of vertigo has been rarely reported, and moreover, associated vestibulopathy was not characterized in detail in those cases. We report a 35 year-old male patient with Bell’s palsy accompanying acute peripheral vestibular loss, which eventually evolved to benign paroxysmal positional vertigo.

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