ear canal

Summary

Summary: The narrow passage way that conducts the sound collected by the EAR AURICLE to the TYMPANIC MEMBRANE.

Top Publications

  1. Hsiao S, Liu T. Osteoma of the external ear canal. Otol Neurotol. 2003;24:960 pubmed
  2. Lee C, Jang K, Cho Y. Tubular apocrine adenoma with syringocystadenoma papilliferum arising from the external auditory canal. J Laryngol Otol. 2005;119:1004-6 pubmed
    ..Comprehensive review of the literature reveals that TAA in the external auditory canal (EAC) has not yet been reported. We report a case of TAA in the EAC, together with characteristic histopathological findings...
  3. Siegert R, Kanderske J. A new semi-implantable transcutaneous bone conduction device: clinical, surgical, and audiologic outcomes in patients with congenital ear canal atresia. Otol Neurotol. 2013;34:927-34 pubmed publisher
    ..The goal of this study was to evaluate its clinical and audiologic results in patients with unilateral or bilateral congenital aural atresia...
  4. Scheperle R, Goodman S, Neely S. Further assessment of forward pressure level for in situ calibration. J Acoust Soc Am. 2011;130:3882-92 pubmed publisher
    ..Additionally, FPL calibration appears a reasonable option when quantifying the levels of extended high-frequency (10-18 kHz) stimuli...
  5. Smeak D. Management of complications associated with total ear canal ablation and bulla osteotomy in dogs and cats. Vet Clin North Am Small Anim Pract. 2011;41:981-94, vii pubmed publisher
    Total ear canal ablation combined with bulla osteotomy is a salvage procedure recommended primarily for end-stage inflammatory ear canal disease but also for neoplasia and severe traumatic injuries...
  6. Rosowski J, Nakajima H, Hamade M, Mahfoud L, Merchant G, Halpin C, et al. Ear-canal reflectance, umbo velocity, and tympanometry in normal-hearing adults. Ear Hear. 2012;33:19-34 pubmed publisher
    ..This study compares measurements of ear-canal reflectance (ECR) to other objective measurements of middle ear function including audiometry, umbo velocity (VU), and tympanometry in a population of strictly defined normal-hearing ears...
  7. Revadi G, Prepageran N, Raman R, Sharizal T. Epithelial migration on the external ear canal wall in normal and pathologic ears. Otol Neurotol. 2011;32:504-7 pubmed publisher
    ..Epithelial migration on the external auditory canal (EAC) wall is abnormal in ears with keratosis obturans (KO)...
  8. Homma K, Shimizu Y, Kim N, Du Y, Puria S. Effects of ear-canal pressurization on middle-ear bone- and air-conduction responses. Hear Res. 2010;263:204-15 pubmed publisher
    ..this mid-frequency BC noise transmission is to introduce a positive or negative static pressure in the ear canal, which is known to reduce BC as well as AC hearing sensitivity...
  9. Rutherford K, Leonard G. Hemangiomas of the external auditory canal. Am J Otolaryngol. 2010;31:384-6 pubmed publisher
    ..In addition, we review the relevant literature with respect to epidemiology, presentation, evaluation, pathology, and management options for hemangiomas arising in the external auditory canal...
  10. Voss S, Adegoke M, Horton N, Sheth K, Rosand J, Shera C. Posture systematically alters ear-canal reflectance and DPOAE properties. Hear Res. 2010;263:43-51 pubmed publisher
    ..Intra-subject variability, assessed via standard deviations for each subject's multiple measurements, were generally smaller in the upright position relative to the tilted position...

Detail Information

Publications62

  1. Hsiao S, Liu T. Osteoma of the external ear canal. Otol Neurotol. 2003;24:960 pubmed
  2. Lee C, Jang K, Cho Y. Tubular apocrine adenoma with syringocystadenoma papilliferum arising from the external auditory canal. J Laryngol Otol. 2005;119:1004-6 pubmed
    ..Comprehensive review of the literature reveals that TAA in the external auditory canal (EAC) has not yet been reported. We report a case of TAA in the EAC, together with characteristic histopathological findings...
  3. Siegert R, Kanderske J. A new semi-implantable transcutaneous bone conduction device: clinical, surgical, and audiologic outcomes in patients with congenital ear canal atresia. Otol Neurotol. 2013;34:927-34 pubmed publisher
    ..The goal of this study was to evaluate its clinical and audiologic results in patients with unilateral or bilateral congenital aural atresia...
  4. Scheperle R, Goodman S, Neely S. Further assessment of forward pressure level for in situ calibration. J Acoust Soc Am. 2011;130:3882-92 pubmed publisher
    ..Additionally, FPL calibration appears a reasonable option when quantifying the levels of extended high-frequency (10-18 kHz) stimuli...
  5. Smeak D. Management of complications associated with total ear canal ablation and bulla osteotomy in dogs and cats. Vet Clin North Am Small Anim Pract. 2011;41:981-94, vii pubmed publisher
    Total ear canal ablation combined with bulla osteotomy is a salvage procedure recommended primarily for end-stage inflammatory ear canal disease but also for neoplasia and severe traumatic injuries...
  6. Rosowski J, Nakajima H, Hamade M, Mahfoud L, Merchant G, Halpin C, et al. Ear-canal reflectance, umbo velocity, and tympanometry in normal-hearing adults. Ear Hear. 2012;33:19-34 pubmed publisher
    ..This study compares measurements of ear-canal reflectance (ECR) to other objective measurements of middle ear function including audiometry, umbo velocity (VU), and tympanometry in a population of strictly defined normal-hearing ears...
  7. Revadi G, Prepageran N, Raman R, Sharizal T. Epithelial migration on the external ear canal wall in normal and pathologic ears. Otol Neurotol. 2011;32:504-7 pubmed publisher
    ..Epithelial migration on the external auditory canal (EAC) wall is abnormal in ears with keratosis obturans (KO)...
  8. Homma K, Shimizu Y, Kim N, Du Y, Puria S. Effects of ear-canal pressurization on middle-ear bone- and air-conduction responses. Hear Res. 2010;263:204-15 pubmed publisher
    ..this mid-frequency BC noise transmission is to introduce a positive or negative static pressure in the ear canal, which is known to reduce BC as well as AC hearing sensitivity...
  9. Rutherford K, Leonard G. Hemangiomas of the external auditory canal. Am J Otolaryngol. 2010;31:384-6 pubmed publisher
    ..In addition, we review the relevant literature with respect to epidemiology, presentation, evaluation, pathology, and management options for hemangiomas arising in the external auditory canal...
  10. Voss S, Adegoke M, Horton N, Sheth K, Rosand J, Shera C. Posture systematically alters ear-canal reflectance and DPOAE properties. Hear Res. 2010;263:43-51 pubmed publisher
    ..Intra-subject variability, assessed via standard deviations for each subject's multiple measurements, were generally smaller in the upright position relative to the tilted position...
  11. Kuwada C, Bishop B, Kuwada S, KIM D. Acoustic recordings in human ear canals to sounds at different locations. Otolaryngol Head Neck Surg. 2010;142:615-7 pubmed publisher
    ..For humans, we embedded microphones in ear molds that were custom fitted to the subject's ear canal. For the ball, the microphones were flush with the surface at +/- 90 degrees azimuths on the equator...
  12. Alworth L, Plyler P, Reber M, Johnstone P. The effects of receiver placement on probe microphone, performance, and subjective measures with open canal hearing instruments. J Am Acad Audiol. 2010;21:249-66 pubmed publisher
    Open canal hearing instruments differ in method of sound delivery to the ear canal, distance between the microphone and the receiver, and physical size of the devices...
  13. Yañez Vico R, Iglesias Linares A, Torres Lagares D, Gutierrez Perez J, Solano Reina E. Three-dimensional evaluation of craniofacial asymmetry: an analysis using computed tomography. Clin Oral Investig. 2011;15:729-36 pubmed publisher
    ..The angulation of the mandibular ramus, on both frontal and lateral planes, determines apparent facial asymmetry, as well as conditioning the surgical treatment plan for patients with craniofacial asymmetry...
  14. Xenellis J, Mountricha A, Maragoudakis P, Kandiloros D, Assimakopoulos D, Linthicum F, et al. A histological examination in the cases of initial diagnosis as chronic otitis media with a polypoid mass in the external ear canal. Auris Nasus Larynx. 2011;38:325-8 pubmed publisher
    to analyse a large series of patients with initial diagnosis of chronic otitis media (COM) with a polypoid mass in the external ear canal (EAC).
  15. Keefe D, Schairer K. Specification of absorbed-sound power in the ear canal: application to suppression of stimulus frequency otoacoustic emissions. J Acoust Soc Am. 2011;129:779-91 pubmed publisher
    ....
  16. Rasetshwane D, Neely S. Inverse solution of ear-canal area function from reflectance. J Acoust Soc Am. 2011;130:3873-81 pubmed publisher
    ..transformation of acoustical quantities, such as impedance and pressure that are measured at the entrance of the ear canal, to quantities at the eardrum. This transformation often requires knowledge of the shape of the ear canal...
  17. Lithgow B. A methodology for detecting field potentials from the external ear canal: NEER and EVestG. Ann Biomed Eng. 2012;40:1835-50 pubmed publisher
    ..method called Electrovestibulography (EVestG) for extracting field potentials (FPs) from artefact rich and noisy ear canal recordings is presented...
  18. Dhar S, Rogers A, Abdala C. Breaking away: violation of distortion emission phase-frequency invariance at low frequencies. J Acoust Soc Am. 2011;129:3115-22 pubmed publisher
    ..This experiment asked whether the phase behavior of the ear canal DPOAE at low frequencies is driven by the phase of the component from the distortion product (DP) region at 2f(1)..
  19. Lee J, Eom K, Seong Y, Lee H, Park J, Lee J, et al. Ultrasonographic evaluation of the external ear canal and tympanic membrane in dogs. Vet Radiol Ultrasound. 2006;47:94-8 pubmed
    Ultrasonographic imaging of the canine external ear canal, tympanic membrane, and tympanic bulla was described in five healthy beagle dogs before and after infusion of saline into the ear canal. Saline served as an acoustic window...
  20. Marioni G, Brescia G, Staffieri C, Poletti A, Staffieri A. Syringocystoadenoma papilliferum of the external ear canal: an immunohistochemical study. Acta Otolaryngol. 2004;124:761-2 pubmed
  21. Choi J, Choi E, Lee H, Yoo J, Kim S, Lee W. Mode of parotid involvement in external auditory canal carcinoma. J Laryngol Otol. 2003;117:951-4 pubmed
    ....
  22. Neely S, Gorga M. Comparison between intensity and pressure as measures of sound level in the ear canal. J Acoust Soc Am. 1998;104:2925-34 pubmed
    ..be problematic at frequencies above 2 kHz, because the pressure can vary significantly along the length of the ear canal, due to reflection of sound waves at the eardrum...
  23. Yeung P, Bridger A, Smee R, Baldwin M, Bridger G. Malignancies of the external auditory canal and temporal bone: a review. ANZ J Surg. 2002;72:114-20 pubmed
    ..Malignancies of the external auditory canal and temporal bone are uncommon. A retrospective review was conducted of a large series treated at the Prince of Wales hospital between 1974 and 1995...
  24. Reeck J, Yen T, Szmit A, Cheung S. Cavernous hemangioma of the external ear canal. Laryngoscope. 2002;112:1750-2 pubmed
    To document the occurrence of a cavernous hemangioma of the external ear canal and to review the relevant literature. STUDY DESIGN Case report and literature review.
  25. Nagasaka S, Fujimura T, Segoshi K. Development of a non-radiographic cephalometric system. Eur J Orthod. 2003;25:77-85 pubmed
    ....
  26. Bothwell N, Willard C, Sorensen D, Downey T. A rare case of a sebaceous nevus in the external auditory canal. Ear Nose Throat J. 2003;82:38-41 pubmed
    ..This case report adds the sebaceous nevus to the differential diagnosis of external auditory canal lesions and provides essential information about this rare mass...
  27. Covelli E, De Seta E, Zardo F, De Seta D, Filipo R. Cavernous haemangioma of external ear canal. J Laryngol Otol. 2008;122:e19 pubmed publisher
    ..The aim of this study was to document the occurrence of a cavernous haemangioma of the external auditory canal, and to review the literature on this pathology...
  28. Sotiraki S, Koutinas A, Leontides L, Adamama Moraitou K, Himonas C. Factors affecting the frequency of ear canal and face infestation by Otodectes cynotis in the cat. Vet Parasitol. 2001;96:309-15 pubmed
    ..2-9). Cats with mild-to-moderate degree of infestation had 18 times higher chance of exhibiting an ear discharge than those with a severe infestation. The log-odds of mild-to-moderate parasitism were linearly related to the age...
  29. Siegert R, Weerda H. Two-step external ear canal construction in atresia as part of auricular reconstruction. Laryngoscope. 2001;111:708-14 pubmed
    One of the common complications of atresia surgery is restenosis of the surgically constructed external ear canal. To avoid this complication, a new two-step technique of creating an external ear canal was developed and evaluated.
  30. Limb C, Mabrie D, Carey J, Minor L. Hemangioma of the external auditory canal. Otolaryngol Head Neck Surg. 2002;126:74-5 pubmed
  31. DiMuzio J, Deschler D. Emergency department management of foreign bodies of the external ear canal in children. Otol Neurotol. 2002;23:473-5 pubmed
    ..To evaluate the management of foreign bodies in the external auditory canal (EAC) in pediatric patients by emergency department personnel...
  32. Ravicz M, Olson E, Rosowski J. Sound pressure distribution and power flow within the gerbil ear canal from 100 Hz to 80 kHz. J Acoust Soc Am. 2007;122:2154-73 pubmed
    Sound pressure was mapped in the bony ear canal of gerbils during closed-field sound stimulation at frequencies from 0.1 to 80 kHz. A 1.27-mm-diam probe-tube microphone or a 0...
  33. Wolfe T, Bateman S, Cole L, Smeak D. Evaluation of a local anesthetic delivery system for the postoperative analgesic management of canine total ear canal ablation--a randomized, controlled, double-blinded study. Vet Anaesth Analg. 2006;33:328-39 pubmed
    ..To determine if a constant rate local anesthetic delivery system is more effective than continuous intravenous (IV) morphine infusion for postoperative analgesia...
  34. Shera C, Guinan J. Stimulus-frequency-emission group delay: a test of coherent reflection filtering and a window on cochlear tuning. J Acoust Soc Am. 2003;113:2762-72 pubmed
    ..The measurements and analysis reported here illustrate the rich potential inherent in OAE measurements for obtaining valuable information about basic cochlear properties such as tuning...
  35. Konishi E, Nakashima Y, Manabe T, Mazaki T, Wada Y. Irritated seborrheic keratosis of the external ear canal. Pathol Int. 2003;53:622-6 pubmed
    ..skin of the trunk, extremities, head and neck of an elderly person, it is uncommon to originate in the external ear canal. Even rarer, an irritated subtype may arise in this location...
  36. Cole L. Otoscopic evaluation of the ear canal. Vet Clin North Am Small Anim Pract. 2004;34:397-410 pubmed
    Otoscopic evaluation of the external ear canal and tympanic membrane is the first diagnostic procedure that should be performed in animals presented with otitis externa...
  37. Stone M, Moore B. Estimated variability of real-ear insertion response (REIR) due to loudspeaker type and placement. Int J Audiol. 2004;43:271-5 pubmed
    ..of a hearing aid is estimated as the difference between the aided response and the unaided response in the ear canal. Changes in the position of the loudspeaker relative to the head, between the two measurements, may reduce the ..
  38. Persaud R, Hajioff D, Thevasagayam M, Wareing M, Wright A. Keratosis obturans and external ear canal cholesteatoma: how and why we should distinguish between these conditions. Clin Otolaryngol Allied Sci. 2004;29:577-81 pubmed
    Keratosis obturans and external ear canal cholesteatomas have been considered as separate entities for the last 20 years, after being regarded as variations of the same disease for at least 87 years...
  39. Kazikdas K, Onal K, Kuehnel T, Ozturk T. An intradermal nevus of the external auditory meatus. Eur Arch Otorhinolaryngol. 2006;263:253-5 pubmed
    ..Thus, this is a unique case of intradermal nevus obstructing the external ear canal with the patient presenting with progressive hearing loss...
  40. Durmaz R, Ozerol I, Kalcioglu M, Oncel S, Otlu B, Direkel S, et al. Detection of Alloiococcus otitidis in the nasopharynx and in the outer ear canal. New Microbiol. 2002;25:265-8 pubmed
    ..otitidis, 145 swabs (50, nasopharynx; 95 outer ear canal) collected from 50 children were screened by polymerase chain reaction. A. otitidis DNA was detected in seven (4...
  41. Yang T, Chiang Y, Chao P, Lee F. Cavernous hemangioma of the bony external auditory canal. Otolaryngol Head Neck Surg. 2006;134:890-1 pubmed
  42. Brungart D, Rabinowitz W. Auditory localization of nearby sources. Head-related transfer functions. J Acoust Soc Am. 1999;106:1465-79 pubmed
    ..Overall, the results suggest that binaural cues play an important role in auditory distance perception for nearby sources...
  43. Lee F. Pigmented nevus of the external auditory canal. Otolaryngol Head Neck Surg. 2006;135:124-8 pubmed
    ..To present the clinical experience during an 18-year period of a series of 11 cases of pigmented nevus of the external auditory canal (EAC)...
  44. Connery N, McAllister H, Hay C. Para-aural abscessation following traumatic ear canal separation in a dog. J Small Anim Pract. 2001;42:253-6 pubmed
    Traumatic ear canal separation is rare in animals, with only eight dogs and one cat reported with the condition in the English language literature. Para-aural abscessation occurred in six of these nine animals...
  45. Cafarchia C, Gallo S, Capelli G, Otranto D. Occurrence and population size of Malassezia spp. in the external ear canal of dogs and cats both healthy and with otitis. Mycopathologia. 2005;160:143-9 pubmed
    ..to evaluate the occurrence, risk factors and population size of different species of Malassezia in the external ear canal of dogs and cats with and without otitis externa...
  46. Missfeldt N, Baun A, Zwirner P. [Bilateral bone anchored hearing aid management of children with external ear dysplasia and/or ear canal atresia]. HNO. 2002;50:495-500 pubmed
    ..The literature gives hardly any information about the benefits for children of using a bilateral bone-anchored hearing aid (BAHA) as opposed to a bilateral conventional bone conducting hearing aid...
  47. Kalantar E, Mosaei M, Ekrami A, Pedram M. Isolation and antimicrobial susceptibility of bacteria from external ear canal of cancer patients at Shafa Cancer Hospital-Ahwaz. J Cancer Res Ther. 2006;2:17-9 pubmed
    A bacteriological study of external ear canal was performed in 52 hospitalized cancer patients and 42 non hospitalized cancer patients at Shafa hospital, Ahwaz...
  48. Gan R, Reeves B, Wang X. Modeling of sound transmission from ear canal to cochlea. Ann Biomed Eng. 2007;35:2180-95 pubmed
    A 3-D finite element (FE) model of the human ear consisting of the external ear canal, middle ear, and cochlea is reported in this paper...
  49. Radlinsky M, Mason D, Roush J, Pineda R. Use of a continuous, local infusion of bupivacaine for postoperative analgesia in dogs undergoing total ear canal ablation. J Am Vet Med Assoc. 2005;227:414-9 pubmed
    To determine whether addition of a continuous, local infusion of bupivacaine would improve postoperative analgesia in dogs undergoing total ear canal ablation.
  50. de Baere T, Vaneechoutte M, Deschaght P, Huyghe J, Dhooge I. The prevalence of middle ear pathogens in the outer ear canal and the nasopharyngeal cavity of healthy young adults. Clin Microbiol Infect. 2010;16:1031-5 pubmed publisher
    ..otitidis from the nasopharynx, its role in the aetiology of OME remains ambiguous because middle ear infecting organisms are considered to invade the middle ear from the nasopharynx through the Eustachian tube...
  51. Dizotti C, Coutinho S. Isolation of Malassezia pachydermatis and M. sympodialis from the external ear canal of cats with and without otitis externa. Acta Vet Hung. 2007;55:471-7 pubmed publisher
    The objective of this study was to determine the presence of Malassezia spp. in the external ear canal of cats with and without otitis. Forty-five animals were studied, 20 with and 25 without otitis externa (OE)...
  52. Thompson L, Nelson B, Barnes E. Ceruminous adenomas: a clinicopathologic study of 41 cases with a review of the literature. Am J Surg Pathol. 2004;28:308-18 pubmed
    ..Ceruminous gland neoplasms are rare neoplasms. To date, a large clinicopathologic study of benign ceruminous gland neoplasms has not been reported...
  53. Ravicz M, Melcher J. Isolating the auditory system from acoustic noise during functional magnetic resonance imaging: examination of noise conduction through the ear canal, head, and body. J Acoust Soc Am. 2001;109:216-31 pubmed
    ..Specifically, it was examined whether a device for isolating the head and ear canal from sound (a "helmet") could add to the isolation provided by conventional hearing protection devices ..
  54. Pulec J, Deguine C. Squamous cell carcinoma of the external auditory canal. Ear Nose Throat J. 2004;83:9 pubmed
  55. El Demellawy D, Escott N, Salama S, Alowami S. Sebaceoma of the external ear canal: an unusual location. Case report and review of the literature. J Cutan Pathol. 2008;35:963-6 pubmed publisher
    Sebaceous neoplasms of the external ear canal are extremely rare. Only two cases of sebaceous neoplasms have been reported in the English literature, a sebaceous carcinoma and a sebaceous adenoma...
  56. Gillespie M, Francis H, Chee N, Eisele D. Squamous cell carcinoma of the temporal bone: a radiographic-pathologic correlation. Arch Otolaryngol Head Neck Surg. 2001;127:803-7 pubmed
    ..To assess the utility of a previously proposed staging system for patients with primary squamous cell carcinoma of the temporal bone...
  57. Sanjuan M, Sabatier F, Andrac Meyer L, Lavieille J, Magnan J. Ear canal keratinocyte culture: clinical perspective. Otol Neurotol. 2007;28:504-9 pubmed
    ..by cultivating keratinocytes of the external auditory meatus can be used to repair cutaneous defects of the ear canal. The Rheinwald and Green method has been used to know whether the produced epidermal layer preserves its ..
  58. Treasure T. External auditory canal carcinoma involving the temporomandibular joint: two cases presenting as temporomandibular disorders. J Oral Maxillofac Surg. 2002;60:465-9 pubmed
  59. Keller C, Hartung K, Takahashi T. Head-related transfer functions of the barn owl: measurement and neural responses. Hear Res. 1998;118:13-34 pubmed
    ..The inner ca. 1 cm of the ear canal was found to contribute little to the directionality of the HRTFs...
  60. Su T, Shen K, Wang H, Chu P, Chen M. Lipomatous apocrine adenoma with syringocystadenoma papilliferum arising from the external auditory canal. Head Neck Oncol. 2011;3:36 pubmed publisher
    ..Herein we reported the first case in the English literature in the world...
  61. Oliver E, Hughley B, Shonka D, Kesser B. Revision aural atresia surgery: indications and outcomes. Otol Neurotol. 2011;32:252-8 pubmed publisher
    ..To determine the most common indications for revision congenital aural atresia (CAA) surgery and the postoperative healing and hearing outcomes of revision surgery...
  62. Colletti L, Carner M, Mandalà M, Veronese S, Colletti V. The floating mass transducer for external auditory canal and middle ear malformations. Otol Neurotol. 2011;32:108-15 pubmed publisher
    ..This study demonstrates that placement of the floating mass transducer of the Med-El Vibrant Soundbridge on the round window (RW) allows optimal amplification and enables the restoration of good hearing in these patients...