References
- Baloh RW, Yue Q, Jacobson KM, et al. Persistent direction-changing positional nystagmus: another variant of benign positional nystagmus? Neurology. 1995;45:1297–1301.
- Bisdorff AR, Debatisse D. Localizing signs in positional vertigo due to lateral canal cupulolithiasis. Neurology. 2001;57:1085–1088.
- Hiruma K, Numata T. Positional nystagmus showing neutral points. ORL J Otorhinolaryngol Relat Spec. 2004;66:46–50.
- Ichijo H. Persistent direction-changing geotropic positional nystagmus. Eur Arch Otorhinolaryngol. 2012;269:747–751.
- Kim MB, Hong SM, Choi H, et al. The light cupula: an emerging new concept for positional vertigo. J Audiol Otol. 2018;22:1–5.
- McClure JA. Horizontal canal BPV. J Otolaryngol. 1985;14:30–35.
- Baloh RW, Jacobson K, Honrubia V. Horizontal semicircular canal variant of benign positional vertigo. Neurology. 1993;43:2542–2549.
- Epley JM. Positional vertigo related to semicircular canalolithiasis. Otolaryngol Head Neck Surg. 1995;112:154–161.
- Lempert T, Tiel-Wilck K. A positional maneuver for treatment of horizontal-canal benign positional vertigo. Laryngoscope. 1996;106:476–478.
- Ichijo H. Positional nystagmus of horizontal canalolithiasis. Acta Otolaryngol. 2011;131:46–51.
- Ichijo H. Asymmetry of positioning nystagmus in posterior canalolithiasis. Acta Otolaryngol. 2013;133:159–164.
- Ciniglio Appiani G, Catania G, Gagliardi M, et al. Repositioning maneuver for the treatment of the apogeotropic variant of horizontal canal benign paroxysmal positional vertigo. Otol Neurotol. 2005;26:257–260.
- Shigeno K. Positional treatments for lateral semicircular canal benign paroxysmal positional vertigo. Equilibrium Res. 2015;74:191–198.
- Ichijo H. Neutral position of persistent direction-changing positional nystagmus. Eur Arch Otorhinolaryngol. 2016;273:311–316.
- Ikeda T, Hashimoto M, Horiike O, et al. Simple eye movement image analysis technique using NIH Image. Equilibrium Res. 2002;61:90–96.
- Yamane H, Imoto T, Nakai Y, et al. Otoconia degradation. Acta Otolaryngol Suppl. 1984;406:263–270.
- Harada Y, Takumida M. Functional aspects of the vestibular dark cells in the guinea pig: morphological investigation using ruthenium red staining technique. Auris Nasus Larynx. 1990;17:77–85.
- Imai T, Okumura T, Nishiike S, et al. Recovery of positional nystagmus after benign paroxysmal positional vertigo fatigue. Eur Arch Otorhinolaryngol. 2018;275:2967–2973.
- Koo JW, Moon IJ, Shim WS, et al. Value of lying-down nystagmus in the lateralization of horizontal semicircular canal benign paroxysmal positional vertigo. Otol Neurotol. 2006;27:367–371.
- Ichijo H. Onset time of benign paroxysmal positional vertigo. Acta Otolaryngol. 2017;137:144–148.