Larynx-Evoked Brain Stem Response

Yamashita, Toshiyuki; Yamaguchi, Mikio; Tachibana, Humitoshi; Taniguchi, Masahiko; Kanetake, Hiroyuki; Koike, Yasuo

doi:10.5426/larynx1989.3.1_1

Cited by 2 publications

(1 citation statement)

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“…Although his work showed the possibility of using transcutaneous stimulation of SLN, this method is not commonly used to date. 38 The generator sources of the waves can also be speculated on from an intracranial lesional experiment in which the characteristics of the waves can be compared before and after a surgical transection of each brain stem area. And we can suggest another semi-noninvasive method in which the SLN is preserved and the supraglottic mucosa innervated by the SLN is stimulated mechanically, as in the recording of somatosensory response.…”

Section: Discussionmentioning

confidence: 99%

Superior Laryngeal Nerve Brain Stem Evoked Response in the Cat

Kim¹,

Kim²,

Hong³

et al. 1997

Ann Otol Rhinol Laryngol

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The generator sources of each wave of the laryngeal brain stem evoked response (LBR) have yet to be precisely demonstrated, although this has been studied in several animal species. This study was carried out to record the near-field brain stem activity as well as the far-field brain stem activity in the cat under the same experimental setup, and to search for the generator sources of the waves. Under general anesthesia, the LBR tracings were recorded adjacent to and within the brain stem following direct electrical stimulation of the internal branch of the superior laryngeal nerve. Reproducible positive and negative waves were detected by the far- and near-field techniques. Mean latencies, configurations, and reproducibility of each wave were demonstrated. From these results, we speculate on the generator sources of each wave.

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Section: Discussionmentioning

confidence: 99%

Superior Laryngeal Nerve Brain Stem Evoked Response in the Cat

Kim¹,

Kim²,

Hong³

et al. 1997

Ann Otol Rhinol Laryngol

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Ganglions and Ganglionic Neurons in the Cat's Larynx

Yoshida

Shimazaki

Tanaka

et al. 1993

Acta Oto-Laryngologica

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Localization, projections and role of ganglia and ganglionic neurons in the laryngeal framework were demonstrated in cats. Six to 8 large size ganglia containing 50 to 80 ganglionic neurons per ganglion in the paraglottic space, 4 to 6 small ganglia involving 5 to 25 cells in each ganglion dorsal to the posterior cricoarytenoid muscle, and 1 to 3 small ganglia including 15 to 25 perikarya per ganglion around the inferior laryngeal nerve were observed. Each ganglion showed spindle shaped covering fibrous capsule. Ganglionic neurons totaling 600 to 800 were oval shaped with an average diameter of 25 microns. Projections of the ganglionic neurons to the superior cervical ganglion (SCG) and nodose ganglion (NG) through the ipsilateral internal branch of the superior laryngeal nerve and to periphery were detected. From the dorsal motor nucleus of vagus, SCG and NG, the ganglionic cells received projections ipsilaterally. On immunocytochemistry many vasoactive intestinal polypeptide (VIP)-immunoreactive (ir) neurons, some neuropeptide Y (NPY)- and tyrosine hydroxylase (TH)-ir neurons and a few substance P (SP)-ir cells were recognized in ganglions. VIP-, NPY-, TH-, SP-, and calcitonin gene-related peptide (CGRP)-ir fibers were also observed in and around vessels and glands. Following denervation, VIP-, NPY- and TH-ir neurons and fibers did not change. These results prove that laryngeal ganglionic neurons have endogenic autonomic, especially cholinergic nature and innervate vessels and glands.

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Larynx-Evoked Brain Stem Response

Cited by 2 publications

References 0 publications

Superior Laryngeal Nerve Brain Stem Evoked Response in the Cat

Superior Laryngeal Nerve Brain Stem Evoked Response in the Cat

Ganglions and Ganglionic Neurons in the Cat's Larynx

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