Course of the Peripheral Gustatory Nerves

Rollin, H

doi:10.1177/000348947708600219

Cited by 12 publications

(9 citation statements)

References 31 publications

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“…Palate sensitivity was not significantly impaired by the surgery of the middle ear because the greater palatine nerve (2, 12), which is a branch of the greater petrosal nerve, does not run through the middle ear. Consequently, there is no reason to find any deficit at the palate and so the results constitute an internal control.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, some patients with a sectioned chorda tympani did not declare symptoms of taste impairment. However, the chorda tympani receptor field on the tongue is extensive and includes areas where papillae may be dually innervated by chorda tympani and trigeminal fibres, on the anterior part of the tongue, or by chorda tympani and glossopharyngeal fibres, as shown for foliate papillae in the rat (11, 12). Consequently, an exhaustive, quantitative evaluation of the sensitivity of the whole tongue surface after chorda tympani reclining seems necessary.…”

mentioning

confidence: 99%

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Taste deficits after middle ear surgery for otosclerosis: taste somatosensory interactions

Berteretche

Eloit

Dumas

et al. 2008

European J Oral Sciences

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The aim of this study was to evaluate the postoperative consequences of chorda tympani reclining during middle ear surgery for otosclerosis. Electrogustometric taste thresholds were measured at 11 loci on the tongue and the soft palate in 14 patients before surgery, and 8 d, 1 month and (in some cases) 6 months after surgery. A significant increase in thresholds was observed on the ipsilateral side of the tongue after surgery. The extent of the deficit and the recovery time course depended on tongue locus. The tip of the tongue displayed a limited deficit, suggesting bilateral chorda tympani innervation. The edge of the tongue was less impaired than the dorsal or the lateral tip loci; it may be dually innervated by both chorda tympani and glossopharyngeal nerves in humans, as already shown in rats. Likewise for the fungiform papillae located just anterior to the circumvallate papillae. Somatosensory early complaints suggest a derepression of chorda tympani on lingual nerve signals. In a second stage, relief of complaints before electrogustometric threshold recovery suggested trigeminal compensation of the chorda tympani deficit. Relief of complaints seems to involve central integrative processes, whereas the evolution of electrogustometric threshold represents the actual recovery time course of chorda tympani peripheral sensitivity.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Taste deficits after middle ear surgery for otosclerosis: taste somatosensory interactions

Berteretche

Eloit

Dumas

et al. 2008

European J Oral Sciences

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“…Although further history would spark many debates and arguments [2][3][4], the peripheral gustatory pathway in man has no been generally well established and accepted.…”

Section: Introductionmentioning

confidence: 99%

Central Pathway of Taste: Clinical and MRI Study

Lee¹,

Hwang²,

Rison³

et al. 1998

Eur Neurol

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We present 3 cases of hemiageusia due to focal ischemic lesions in the brainstem. Clinical presentation with discrete localization of these lesions suggests that the central taste pathway in humans projects ipsilaterally from the solitary nucleus up to the level of the upper pontine or lower midbrain before decussation. Associated partial sensory disturbance of the face or limb with lack of evidence of medial lemniscus decussation at the upper brainstem suggests that the medial lemniscus may not directly convey taste sensation.

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“…Anatomic knowledge of the gustatory pathway in the peripheral nervous system (including the solitary tract) in man has been provided by many researchers. [1][2][3][4][5][6][7] That of the secondary pathway in the brainstem, however, remains at a rudimentary stage. Spontaneous destructions of various nervous pathways by diseases occasionally provide an opportunity to verify or even to deny anatomic data collected in animals by the experimental method.…”

mentioning

confidence: 99%

Primary pontine hemorrhage and gustatory disturbance: clinicoanatomic study.

Goto¹,

Yamamoto²,

Kaneko³

et al. 1983

Stroke

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A clinicoanatomic study of 12 patients with tegmental-type primary pontine hemorrhage proved the presence of a gustatory disturbance among other clinical symptoms on the same side of the tongue as that of the pontine lesion, and suggested the secondary pathway of gustatory sensation from the solitary tract nucleus ascends without decussation in the homolateral pontine tegmentum. These results contradict textbook descriptions regarding the human secondary gustatory pathway.

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Course of the Peripheral Gustatory Nerves

Cited by 12 publications

References 31 publications

Taste deficits after middle ear surgery for otosclerosis: taste somatosensory interactions

Taste deficits after middle ear surgery for otosclerosis: taste somatosensory interactions

Central Pathway of Taste: Clinical and MRI Study

Primary pontine hemorrhage and gustatory disturbance: clinicoanatomic study.

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