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61 巻, 2 号
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沢島 政行1958 年 61 巻 2 号 p. 247-251
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリー1) The author measured three-dimensionally the angles between the planes of the tympanic membranes, the oval and the round windows on nine human temporal bones.
After removal of the tympanic membrane, the ossicles and the round window membrane, the author made the plastic mould of the tympanic cavity.The planes representig the tympanic membrane, the oval and round window were ground on the mould, and then the angles between each plane were measured with three-dimensional goniometer.
The angle was 17.4 degrees between the planes of the tympanic membrane and the oval window, 76, 9 degrees between the oval window and the round window and 69.8 degrees between the tympanic membrane and the round window.These were similar to those had been reported by others.
2) The labyrinths of eight human temporal bones were opened to expose the inner ear side of the oval and the round windows.Then the areas of the windows were measured on their photographs.
The area of the oval and the round window was 3.4 mm2 and 2.6 mm2 respectively, and the ratio of the areas of the two windows was 1.3 to 1.
This ratio was smaller than those reported by other authors.In some cases the round windows were as large as the oval windows, and as a whole the size of the round window seemed to be more variable than that of the oval window.抄録全体を表示PDF形式でダウンロード (1283K) -
大島 弘至1958 年 61 巻 2 号 p. 252-266
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーThe bone conduction thresholds of unilateral deafnesses were measured over the different 200 partitions of the head and the face (Fig. 1).
Then the cancellation between bone conducted and air conducted tones, that was similar to Barany's mehtod (Acta Otol. suppl. 26, 1938), was executed on normal subjects to estimate the phase and mode in the vibration of the head (Fig. 2).
Continuously to these experiments, the angle between the rotatory axis of ossicular vibra-tion of the middle ear and the sagittal plane of the head was observed on the temporal bone (Fig. 8).
The results were as follows;
1) It was seen that the thresholds of bone conduction of the head at 250 and 500cps were lowered in the temporal portion and they were elevated at difference of 15 dB in the middle plane of the head from the forehead to the vertex and occiput (Fig. 4, 5, 6).
The difference of the bone conduction thresholds over every partition of the head was diminished in 1000 cps and the threshold of forehead or occiput was lowered equally to that of temporal portion.
In 2000 cps, the distribution of the thresholds has been complicated and the thresholds of normal side were better 10 dB than the deaf side.
2) The phase of the bone conducted tone of the head, at 500 cps, reached each other to the maximal phase difference at the temporal portion on both side.
At 1000cps, however, the maximal phase difference has been seen between the middle plane of the head and the temporal portition, but the phase of bilateral temporal portion had no difference between them (Fig. 7).
3) It was observed on the temporal bone that the rotatory axis of ossicular chain crossed to the middle sagittal plane of the head with the degrees of 16 to 24 and the intersecting point was in the frontal direction of the head. In horizontal dirction the rotatory axis crossed to the German. horizontal plane with the degrees of 0 to 5 (Fig. 9, Tabl. 1).
4) Concerning the results above mentioned, it was thought that there was the approxi-mate relation between the vibrational pattern of the head and the hearing acuity of bone con-duction at 250, 500 and 1000 cps (Fig. 10).
The distribution of the thresholds at 2000 cps, however, could not be applied to this for-mula.
5) The cross perception of sound on the head found by Lucae, has been not clear over 500 cps but the threshold of the vertex of the deaf side at 250 and 500 cps, was lowered 5 to 10dB than the normal side (Fig. 4, 5).抄録全体を表示PDF形式でダウンロード (1989K) -
戸塚 元吉, 河村 正三, 佐藤 正夫, 沢島 政行1958 年 61 巻 2 号 p. 267-272
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーThe acoustic reflex contraction of the stapedius muscle and its influence on the incudo-stapedial joint were studied by means of the electromyogram of the stapedius muscle and condenser method.The following results were obtained: 1) The latent period of the acoustic reflex contraction of the stapedius muscle was 3.44 msec.2) The acoustic reflex contraction of the stapedius muscle was not only influenced by the intensity but also by the frequency of the stimulating tone.The electromyogram of the stapedius muscle was obtained at about 50-16, 000 cps.3) On the stapedius muscle, adaptation phenomenon was observed on the electromyogram; this phenomenon was similar to that of the tensor muscle and the auricular muscle.4) The threshold of the acoustic reflex contraction was about 20_??_100 db on the stapedius muscle and always lower than that of the tensor muscle.5) The displacement of the stapes and the deformation of the incudo-stapedial joint during the reflex contraction' of the stapedius muscle were observed throuth the microscope抄録全体を表示PDF形式でダウンロード (1130K) -
大和田 健次郎, 古賀 慶次郎, 高崎 晃, 木村 幾久子1958 年 61 巻 2 号 p. 273-277
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーSlyghtly superliminal sustained tone was given by an ordinary pure tone audiometer with 5 db step attenuator, the threshold shift was measured at 1000 cps and 8000 cps. Normal per-sons, and those of perceptive deafness, conductive deafness and the patients who were treated with Streptomycin were subjected to this test.
The results were as follows:
1) In patients of perceptive deafness, the threshold shift on sustained tone was observed. It was more distinct at 8000cps than at 1000cps.
2) Two types of the threshold shift were observed.
Type I : Rapid threshold shift (over 20 db in 1 minute)
. Type II: Slow threshold shift (less than 15 db in 3 minutes). This type was observed not only in perceptive deafness but also in conductive deafness.
3) It has been reported that hearing impairment caused by administration of Streptomycin includes retro-labyrinthine deafness. But no difference was observed between the threshold shift of Streptomycin deafness and other perceptive deafnesses.
4) 50% of the patients who had been given Streptomycin causing no hearing impairment revealed threshold shift on sustained tone. This group belongs to Type II.
5) In a case of acute perceptive deafness which showed rapid threshold shift, * disappea-rance of this phenomenon was observed in proportion to the restoration of the hearing acuity.抄録全体を表示PDF形式でダウンロード (330K) -
慢性中耳炎の臨床レ線学的研究 第3編高畑 延臣1958 年 61 巻 2 号 p. 278-282
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーI measured with a planimeter X-ray images of Pneumatic cells of temporal bones which were taken by Sonnenkalb's method before the endoaural operation of the middle ear on 20 cases at the Department of Oto-Rhino-Laryngology, Yokohama University School of Medicine from May, 1952 to the end of December, 1956.
Then I analysed the relations between the results of the above measurement and the epit-helisation of the middle ear cavity after the operation, and found that so far as my cases are concerned, the endoaural operation of the middle ear can be successfully applied when the area of pneumatic cells is less than 9 cm2.抄録全体を表示PDF形式でダウンロード (1364K) -
第2編 集団聴力検査場における音圧および明瞭度の研究細沼 靖1958 年 61 巻 2 号 p. 283-296
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーI investigated the following matters:
The quality and quantity of sound sauce and its place; the construction of class room (wooden or concrete made) and its size; the difference of sound pressure levels distribution when the pupils are on or not in the class room; the difference of articulatory degree at verious point in the room.
Conclusions
1) When the sauce of sound pressure (pure tone, white noise and speech tone) is on the teacher's desk in a wooden made class room, the distributions figure of sound pressure level in the room forms the typical shape such as draw a concentric circle in u half ellipse with major axis on the center line of the room. It decreases proportionally with the distance from the sound sance, but on a sideline of the room, such declination is hardly found. The sound level decline degree at the center line is much smaller in the class room of concfete made than that of wooden made under the same condition. Pattern of distribution of the sound pressure level is very different in each case (concrete or wooden made class room) and the considerable diffe-rence in the sound pressure distribution can be recognized in diagram.
2) The decline dgree of sound pressure level is larger when pupils are in the class room.
3) The pattern of equal articulatory degree line of pure tone sound and speech tone sound in the room is similar to that of equal sound pressure level line.
4) Correlation between articulatory degree of speech tone (mono syrable word sound) and of some pure tone sound are computed with 136 pupils. And the correlation coefficiente is shown as follows; pure tone sound 4 KCPS is the highest coefficient 0.69, 2 KCPS is 0.30, 0.5 KCPS is 0.28 and 1 KCPS is 0.0.抄録全体を表示PDF形式でダウンロード (993K) -
田中 民夫1958 年 61 巻 2 号 p. 297-300
発行日: 1958年
公開日: 2008/03/19
ジャーナル フリーThe clinical and histopathological findings of a 41 year old male patient with giant cell tumor of the left temporal bone were reported.
The tumor developed from the site of previous radical surgery for otitis media.The lite-ratures concerned with the tumor were also reviewed
The tumor developed from the area of the mastoid process of the left temporal bone and various cranial nerve symptoms were observed.
The case was considered to be an unusual one and no similar cases have been reported as far as the location of the tumor was concerned.抄録全体を表示PDF形式でダウンロード (1159K)
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