Abstract:
CONCLUSIONS:We conclude that: (1) among several cues examined, the monaural cue of direct-to-reverberant (D/R) ratio in the ipsilateral ear provides the most information about sound-source distance; (2) interaural level difference (ILD) provides less information about sound-source distance; and (3) a comprehensive theory of three-dimensional auditory localization must incorporate the fact that all of the major acoustic cues change with distance. OBJECTIVE:Neural mechanisms underlying auditory localization of distance are poorly understood. The present study was an initial step toward filling this gap in knowledge. MATERIALS AND METHODS:The binaural room impulse responses of adult barn owls were measured. The sound source was placed at various distances (up to 80 cm) and azimuths (0-90 degrees) relative to the owl's head, with the elevation kept at 0 degrees . RESULTS:We determined the value of each cue for a 3-10 kHz band, and found that: (1) D/R ratio of signal amplitudes provided the most information about sound-source distance; (2) the ipsilateral D/R ratio represented distance more clearly than the contralateral or binaural-average D/R ratios; (3) ILD of direct signals increased with decreasing distance under certain conditions; (3) interaural time difference (ITD) of direct signals increased with decreasing distance at 90 degrees azimuth; and (4) the spectral patterns of ILD and the monaural direct signals changed with distance in complex ways.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Kim DO,Moiseff A,Turner JB,Gull Jdoi
10.1080/00016480701840114subject
Has Abstractpub_date
2008-04-01 00:00:00pages
382-7issue
4eissn
0001-6489issn
1651-2251pii
791754940journal_volume
128pub_type
杂志文章abstract:CONCLUSIONS:The vestibular function can be assessed by ice-water caloric test, rotational chair test and VEMP recording in severely hearing impaired infants and young children, and 85% of these patients showed abnormal responses in these tests. OBJECTIVES:To evaluate the vestibular function of infants and young childr...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480601002039
更新日期:2007-07-01 00:00:00
abstract:CONCLUSION:Our findings suggest that there exists a Na(+) transport system in the cochlea consisting of SGK1, Nedd4 isoforms and ENaC, which may work in concert to transport Na(+) and to maintain homeostasis in the inner ear as they do in other tight epithelia. OBJECTIVES:It has been well demonstrated that the epithel...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480802552501
更新日期:2009-09-01 00:00:00
abstract::On-line measurement of ME gas composition in normal middle ears of 5 anesthetized guinea pigs at an established steady state was performed by mass spectrometry. The mean values for the gas composition of the middle ear were found to be: PN2: 82.4%, PO2: 7.6% and PCO2: 10.0%. This composition is very different from tha...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489309135824
更新日期:1993-05-01 00:00:00
abstract:CONCLUSION:Because nystagmus induced by ampullopetal inhibition of the posterior semicircular canal (PSCC) rotates around the axis perpendicular to the plane of the anterior semicircular canal (ASCC) of the other side, when free-floating debris is initially located at the distal portion of the PSCC, a patient showing p...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.763180
更新日期:2013-06-01 00:00:00
abstract:CONCLUSION:Cochlear implantation assessment is possible using commercially available standard flat-detector computed tomography (FD-CT) protocols. Image quality is superior to multislice CT (MSCT). The radiation dose of FD-CT is lower in comparison with MSCT standard protocols and may therefore overcome the limitations...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016480903292700
更新日期:2010-04-01 00:00:00
abstract:CONCLUSION:Telephone usage is a difficult challenge for cochlear implanted patients. A significant number of cochlear implanted patients are able to carry on a land-line or mobile telephone conversation. The telephone model may be a critical factor for telephone performance. OBJECTIVES:The goals of this study were to ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480500469552
更新日期:2006-07-01 00:00:00
abstract::45CaCl2 was injected into gerbils in single or multiple doses, and the resulting radioactivity in serum, otoconial CaCO3, bone samples, and selected labyrinthine epithelium was determined by liquid scintillation spectrometry. Incorporation into both utricular and saccular otoconia occurred at the rate of 0.06-0.07 nmo...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487509121327
更新日期:1975-09-01 00:00:00
abstract::The effect of adaptation of the ear on the SISI test was studied at 500 Hz and 2000 Hz in 43 patients with chronic otitis and in 20 patients with otosclerosis. The mean adaptation was slightly over 10 dB, except in the otosclerosis group at 2000 Hz, for which the value was nearly 20 dB after continuous stimulation at ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487509121302
更新日期:1975-07-01 00:00:00
abstract::Abstract Usage of the Vibrant Soundbridge (VSB) with round window (RW)-Coupler placement at the RW has been shown to successfully treat mixed hearing loss. Coupling between the VSB's floating mass transducer (FMT) and the RW membrane is difficult in the case of sclerosis in the RW and drilling down the bony lip unti...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2011.649492
更新日期:2012-06-01 00:00:00
abstract::The effects of two simulated hearing impairments (presbyacusis) on speech perception were investigated in two groups of normally hearing subjects (30 and 48 subjects, respectively). Eight patients with presbyacusis with similar hearing impairment to those in the latter simulation served as the clinical material. Word ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164800750000991
更新日期:2000-03-01 00:00:00
abstract::As a continuation of our previous work, where we have demonstrated that in chronic otitis media the picture in the submucosa-bone marginal zone is dominated by capillary proliferation and occurrence of a mononuclear, histiocyte-like cell containing lysosome-like cytoplasmatic bodies, we now report the presence of cons...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487509124704
更新日期:1975-05-01 00:00:00
abstract:CONCLUSION:Cone Beam Computed Tomography (CBCT) can be widely used in imaging of bony structures of the anterior and lateral skull base. Significant differences of applied dosages result from the different protocols of the various indications. OBJECTIVES:CBCT is increasingly being used in head and neck imaging. Until ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1076172
更新日期:2015-01-01 00:00:00
abstract::We evaluated the vestibulo-ocular reflex (VOR) in 50 normal human subjects, uniformly distributed in age 20-59 years, and evenly distributed in sex by decade, using sinusoidal rotation over the frequency range of 0.005 to 1.0 Hz and three peak amplitudes of 25, 50, and 100 deg/sec. Age variations. The gain magnitude o...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488409107563
更新日期:1984-09-01 00:00:00
abstract::Dose-effect curves for inhibition of growth of P388/P mouse lymphoma cells by ethacrynic acid and kanamycin used alone and in combination were determined in vitro. Ethacrynic acid was 600 times more potent than kanamycin and combinations of the drugs resulted in overall additive effects. These results were compared wi...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487909126389
更新日期:1979-01-01 00:00:00
abstract::In this study auditory brainstem responses (ABRs) were recorded repeatedly in three awake cats before and after bilateral aspiration of the inferior colliculi (ICs). All surgical procedures were performed under anaesthesia with Nembutal. Postoperative recordings were obtained 1 week, 3 months, 8 months and 13 months a...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489950181503
更新日期:1999-03-01 00:00:00
abstract::A case-control design was used to assess eye-head-trunk coordination for community-dwelling elders performing a stand-walk task. Eighteen elders with a high risk of falling were matched to 18 subjects with low risk on the basis of age, living status (living alone or with someone) and category of residence (independent...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480152583656
更新日期:2001-09-01 00:00:00
abstract:CONCLUSION:Saccular and utricular maculae can provide information on the supine static position, considering that both have pronounced curved structures with hair cells having a variety of polarization vectors that enable them to sense an inverted position and thus direct the righting reflex. OBJECTIVE:The vestibular ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480510036448
更新日期:2005-05-01 00:00:00
abstract:CONCLUSION:The present study demonstrated the robustness of VEMP testing with toneburst stimuli, since it is hardly affected by head position, i.e. base or tonic excitation levels of the saccule and inferior vestibular nerve. However, the small but highly significant difference found in latency should not be neglected:...
journal_title:Acta oto-laryngologica
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doi:10.1080/00016480600740597
更新日期:2007-01-01 00:00:00
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journal_title:Acta oto-laryngologica
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doi:10.3109/00016489509133351
更新日期:1995-01-01 00:00:00
abstract::While cigarette smoking and alcohol consumption are recognized covariates for head and neck squamous cell carcinoma (SCC), the role of genetic factors in determining individual susceptibility is unknown. The human tumour necrosis factor (TNF) region on chromosome 6p21 within the major histocompatibility complex (MHC) ...
journal_title:Acta oto-laryngologica
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pub_type: 杂志文章
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更新日期:2012-01-01 00:00:00
abstract:CONCLUSION:The improved biocompatibility of Bioverit II coated with a nanostructured surface shows promising qualities for use in human reconstructive middle ear surgery. In the case of chitosan-hydroxyapatite composite prostheses, further investigations regarding composition of the material, degree of purity and desig...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480601053032
更新日期:2007-08-01 00:00:00
abstract::Cell proliferation in the endolymphatic sac (ES) after immunostimulation was assessed immunohistochemically. Guinea pigs were employed as experimental animals and keyhole limpet hemocyanin was used as the antigen. After i.p. injection of 5-bromo-2'-deoxyuridine (BrdUrd), the BrdUrd+ cells were counted to assess the nu...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489509139336
更新日期:1995-05-01 00:00:00
abstract:CONCLUSION:Chronic subjective dizziness (CSD) is frequent and affects twice as many women as men. Anxiety is a strong predisposing factor. The pathophysiologic concept of this disorder assumes that balance function and emotion share common neurologic pathways, which might explain that the balance disorder can provoke f...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480701805455
更新日期:2008-10-01 00:00:00
abstract::The results of House Brackmann and Yanagihara grading were compared with electroneurographic (ENoG) data in 30 consecutive patients with Bell's palsy. The examinations were made on mean days 11, 36 and 99. Twenty-four patients had a favourable outcome (Yanagihara > or = 36 at three months). Based on our observations, ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489850182440
更新日期:1998-11-01 00:00:00
abstract::The authors carried out immunological investigations in 96 patients with laryngeal cancer. The following tests were applied: DNCB, PPD, phyto-test and the lymphocyte count. The patients were divided into three groups: 1) cured, one year following treatment; 2) relapses; 3) died during the first year. The separate grou...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487909126438
更新日期:1979-03-01 00:00:00
abstract::Glycerol (2 g/kg body weight), or 0.15 M NaCl for control animals, was administered to rats by i.v. injection. The dose was chosen in order to obtain an osmolarity increase in plasma of about 15 mosm/l 1 h after the glycerol administration, an increase which is similar to that observed in the human glycerol dehydratio...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489609137887
更新日期:1996-07-01 00:00:00
abstract::In order to examine evidence of high activity of pinocytosis in capillaries of the stria vascularis, quantitative morphometry of pinocytotic vesicles was carried out ultrastructurally by the horseradish peroxidase (HRP) tracer method. In guinea pigs, there was a significant difference between the stria vascularis and ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:
更新日期:1987-03-01 00:00:00
abstract::Efforts to evaluate findings in the nystagmogram were made in a material of 338 vertiginous and dizzy patients. A spontaneous nystagmus, a positional nystagmus as well as a difference in caloric reactivity are as solitary findings of lettle value for revealing peripheral disorders. On the other hand, central disturban...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487809124728
更新日期:1978-07-01 00:00:00
abstract::It has already been reported that anaphylatoxin (AT) is closely related to inner ear lesions. In this study the pathology of inner ear damage caused by AT was investigated in Hartley strain and C4 deficient guinea pigs (C4D-GP). Although the biological activity of C3a and C5a is strong, it is of short duration, and th...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.1992.11665416
更新日期:1992-01-01 00:00:00