Einiges Anatomische aus der Gehörschnecke und über die Function derselben resp. des Gehörorganes

Voltolini,

doi:10.1007/bf01937130

Cited by 3 publications

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“…At the time, Voltolini (191) had the audacity to write that Helmholtz's theory was "the product of a great mind in an hour of weakness." He postulated a frequency theory, insisting that every hair cell responds to every sound, rather than some one cell to each discriminable sound.…”

Section: Frequency Theoriesmentioning

confidence: 99%

Pitch Perception

LAWSON¹

1965

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This paper is a comprehensive review of auditory theory and research that bear directly or indirectly on pitch perception. It considers pitch perception from three major points of view. First, it reviews the history of pitch-perception studies and describes some representative theories of hearing they have " engendered. Second, this paper examines various auditory phenomena in the light of how well the different theoretical positions can explain them. Finally, it attempts to collate physiological and anatomical findings about the auditory nervous system and, again, use the facts which emerge to test the adequacy of theoretical concepts and explanations. The 213 references include studies of both humans and animals.

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Section: Frequency Theoriesmentioning

confidence: 99%

Pitch Perception

LAWSON¹

1965

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Anomalous Capillary Plexus in the Scala Tympani

Wolff¹

1935

Archives of Otolaryngology - Head and Neck Surgery

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A case in which there was an anomalous capillary plexus in the scala tympani of the human cochlea is here reported. The plexus was found in the right ear of a Negro man aged 62. It was located in the basal coil 8.9 mm. within the round window. The condition apparently was unilateral.In the scali tympani, about half way between the basilar membrane and the lower border of the scala, there occurred a union of two capillaries. These capillaries were the vessel under the labium spirale (inner spiral vessel) illustrated in figure 1, and the vessel under the tunnel of Corti (outer spiral vessel) seen in figures 2 and 3. The caliber of the vessel formed was not appreciably altered after the union of the two component vessels. At the point of union the vessel made an angular turn and proceeded toward the lower border of the spiral ligament. Near the lower border of the spiral ligament it again divided ( fig. 4), one branch proceeding into the meshes of the ligament and the other joining the vein in the periosteum of the scala tympani, where the vessel proceeds toward the modiolus.The entire simple network was complete within six microscopic sections (cut at 20 microns) which were 120 microns, or 0.12 mm., in length. The vessel as seen in figure 1 was included in only one section. This was to be expected when it is recalled that its caliber was only that of a red blood cell, or 7.5 microns, and that the sections were 20 microns thick. There was no evidence of previous labyrinthitis. The organ of Corti was in excellent condition in the apical and middle coils. The basal coil showed atrophy of the organ, which might be expected in a person of this decade of life with a 4 + Wassermann reaction of the blood. CLINICAL NOTEThe patient was in the hospital for only seven days. Death was due to carcinoma of the esophagus and trachea. A large semicystic tumor (the size of an orange) was found in the thymus. The Wassermann test of the blood was 4 + on two occasions; the Kahn test was 3 +. On the day of admission the examining internist elicited the information that the patient had had a ringing in the ears for two or three days. Five days before the patient's death the audiogram here From the

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Die Blutgefässe im Häutigen Labyrinthe des Hundes

Asai¹

1908

Anatomische Hefte

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Einiges Anatomische aus der Gehörschnecke und über die Function derselben resp. des Gehörorganes

Cited by 3 publications

References 0 publications

Pitch Perception

Pitch Perception

Anomalous Capillary Plexus in the Scala Tympani

Die Blutgefässe im Häutigen Labyrinthe des Hundes

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