Recently experienced seven cases of socalled associated laryngeal paralysis were reported. They were 4 unilateral paralysis, 2 mixed bilateral paralysis and a bilateral paralysis.With the electromyographic examinations for 3 cases of them, it was investigated for the cases to be in the condition of paresis and to show various and complicated muscle action potential in the abnormal forms in spite of accompanying with the fixations of the vocal cords.Moreover, the questions of the laryngoscopic findings in the vocal cordparalysis were alluded to: especially on the fixed position of the paralysed vocal cord and the strange change of the arytenoid region at the paralytic side.

Paresis

Laryngeal paralysis

Vocal Cord Paralysis

10.5631/jibirin.57.256

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An improved coupled peroxidatic oxidation method of MAO histochemistry for neuroanatomical research at light and electron microscopic levels.

PubMed (1987)

Toshihiro Maeda Hideo Imai Ryohachi Arai H. Tago Tomoyuki Nagai

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Surface view of modiolar vessels as revealed by scanning electron microscopy

Ear research Japan (1983)

Tetsuya Tono Tomoyuki Nagai Tamotsu Morimitsu

10.11289/otoljpn1981.14.155

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Innervation of the tympanic membrane.

PubMed (1995)

Tomoyuki Nagai

In 1911 Wilson reported the presence of modified Vater-Pacinian corpuscles in the human tympanic membrane. Our ultrastructural study of the corpuscles revealed that their features are comparable to the function of a mechanoreceptor. The location of the corpuscles indicate that they may detect the stiffness of the tympanic membrane as a result of its dislocation. Based on histological findings, the relation between mechanoreceptors in the tympanic membrane and the tubal function was examined. Tubal function was tested during Valsalva maneuvers and its active equilibration. After anesthesia of the tympanic membrane, 13 out of the 40 ears needed more than two swallows. As Eustachian tubal function changed following anesthesia of tympanic membranes, a neural connection between sensory receptors in the tympanic membrane and tubal muscles is suggested.

Mechanoreceptor

Eustachian tube

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[Experimental study on the functions of the auditory ossicle uscles].

PubMed (1968)

Tomoyuki Nagai

Ossicles

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