caa a22 4500 477087337 CHVBK 20180405111507.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00176704 doi (NATIONALLICENCE)springer-10.1007/BF00176704 Effects of caloric vestibular stimulation on prepositus hypoglossi neurons in rats [Elektronische Daten] [S. Nishiike, N. Takeda, T. Kubo, S. Nakamura] In our previous study, we found that the majority of locus coeruleus (LC) neurons were inhibited by caloric stimulation and that the inhibition was mediated by gamma aminobutyric acid (GABAA) receptors. It has been reported that the nucleus prepositus hypoglossi (PrH) sends GABAergic inputs to the LC. In the present study, an attempt was made to determine whether PrH neurons contribute to the LC neuronal inhibition caused by caloric stimulation. We characterized the neuronal response in the PrH to caloric stimulation in rats. About three-fourths of PrH neurons showed various responses to both ipsi- and contralateral caloric stimulation, suggesting that PrH neurons receive bilateral vestibular inputs. However, these neurons were not activated by antidromic stimulation of the LC. The remaining one-fourth of the PrH neurons that were antidromically activated did not respond to caloric stimulation. Lesions in the PrH did not attenuate the LC neuronal inhibition caused by caloric stimulation. These findings suggest that the inhibition of LC neurons caused by caloric stimulation is not mediated by the PrH. Springer-Verlag, 1996 Nucleus prepositus hypoglossi nationallicence Caloric stimulation nationallicence Locus coeruleus nationallicence Nishiike S. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut Takeda N. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut Kubo T. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut Nakamura S. Department of Physiology II, Yamaguchi University School of Medicine, 755, Yamaguchi, Japan aut European Archives of Oto-Rhino-Laryngology Springer-Verlag 253/1-2(1996-01-01), 52-56 0937-4477 253:1-2<52 1996 253 405 https://doi.org/10.1007/BF00176704 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00176704 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nishiike S. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut NATIONALLICENCE 700 1- Takeda N. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut NATIONALLICENCE 700 1- Kubo T. Department of Otolaryngology, Osaka University Medical School, 565, Osaka, Japan aut NATIONALLICENCE 700 1- Nakamura S. Department of Physiology II, Yamaguchi University School of Medicine, 755, Yamaguchi, Japan aut NATIONALLICENCE 773 0- European Archives of Oto-Rhino-Laryngology Springer-Verlag 253/1-2(1996-01-01), 52-56 0937-4477 253:1-2<52 1996 253 405 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer