caa a22 4500 475848276 CHVBK 20180406123921.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1007/s004050000266 doi (NATIONALLICENCE)springer-10.1007/s004050000266 The effects of intense click sounds on velocity storage in optokinetic after-nystagmus [Elektronische Daten] [O. Sasaki, S. Asawa, S. Katsuno, S. Usami, K. Taguchi] Vestibular evoked myogenic potentials (VEMP) occurring after click stimulation in cervical muscles are thought to be a polysynaptic response of otolith-vestibular nerve origin. In optokinetic after-nystagmus (OKAN) the direction of after-nystagmus changes and slow-phase velocity decreases with head tilt. This phenomenon may be an otolith response to the direction of gravity. We assumed that intense clicks might have some influence on OKAN via the otolith-vestibular nerve. Twelve normal subjects who showed VEMP at 75 dB normal hearing level (nHL) clicks were examined. The OKAN was recorded under four conditions: right monaural, left monaural and binaural stimulation by 75 dB nHL clicks, and absence of click stimulation. Horizontal optokinetic stimulation was applied using stepwise increasing speeds from 30 deg/s to 90 deg/s. Two seconds before the stimulus ended, clicks were sounded. The slow-phase velocity of the recorded electro-nystagmography was manually measured. There was no effect on OKAN with unilateral stimulation but binaural stimulation suppressed it. These results suggest that a velocity storage integrator is influenced by intense clicks via the otolithic area. Springer-Verlag Berlin Heidelberg, 2000 Key words Otolith nationallicence Vestibule nationallicence Vestibular evoked ¶potential nationallicence Gravity nationallicence Sasaki O. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut Asawa S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut Katsuno S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut Usami S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut Taguchi K. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut https://doi.org/10.1007/s004050000266 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004050000266 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sasaki O. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut NATIONALLICENCE 700 1- Asawa S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut NATIONALLICENCE 700 1- Katsuno S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut NATIONALLICENCE 700 1- Usami S. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut NATIONALLICENCE 700 1- Taguchi K. Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-0802, Japan e-mail: sasaki-o@hsp.md.shinshu-u.ac.jp, Tel.: +81-26-3372666, Fax: +81-26-3369164, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer