Abstract:
:During the course of a chronic intracochlear electrical stimulation study using charge balanced biphasic current pulses, one animal inadvertently received a short period of direct current (DC) stimulation at a level of approximately 1 microA. Subsequent, the animal was chronically stimulated using a poorly charge balanced waveform that produced a DC level of approximately 2 microA. Extensive pathological changes were observed within the cochlea. These changes included widespread spiral ganglion cell loss and new bone growth that extended throughout all turns of the cochlea. Significant changes in the morphology of the electrically evoked auditory brainstem response (EABR) were associated with these pathological changes. EABRs recorded prior to the DC stimulation exhibited a normal waveform morphology. However, responses recorded during the course of the DC stimulation were dominated by a short latency response believed to be vestibular in origin. The response thresholds were also significantly higher than levels recorded before the DC stimulation. In contrast, the contralateral cochlea, stimulated using charge balanced stimuli, showed no evidence of adverse pathological changes. Furthermore, EABRs evoked from this cochlea remained stable throughout the chronic stimulation period. Although preliminary, the present results illustrate the adverse nature of poorly charge balanced electrical stimuli. These results have important implications for both the design of neural prostheses and the use of DC stimuli to suppress tinnitus in patients.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Shepherd RK,Matsushima J,Millard RE,Clark GMdoi
10.3109/00016489109138421subject
Has Abstractpub_date
1991-01-01 00:00:00pages
848-60issue
5eissn
0001-6489issn
1651-2251journal_volume
111pub_type
杂志文章abstract::Cochlear blood flow is considered to be closely related to cochlear function. Among several etiologic factors implicated in inner ear diseases, disturbance of local blood flow is held to be one of the most important. With this in view, various pharmaceuticals are currently being used to increase local blood flow in pa...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489209137500
更新日期:1992-11-01 00:00:00
abstract:CONCLUSION:Utricular dysfunction in patients with posterior canal benign paroxysmal positional vertigo (pBPPV) was supported by findings for ocular vestibular evoked myogenic potential (oVEMP). OBJECTIVE:To evaluate the utricular and saccular function in patients with pBPPV. METHODS:This study focused on 12 patients ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.720030
更新日期:2013-02-01 00:00:00
abstract::The objective of this study was to determine whether methylcobalamin inhibits the ototoxic action of gentamicin. Fourteen pigmented guinea pigs were randomly divided into experimental and control groups. Each animal in the experimental group was given a large single dose of gentamicin (125 mg/kg i.m.), followed by imm...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164801300102752
更新日期:2001-04-01 00:00:00
abstract:CONCLUSION:This study suggests that hyperbilirubinemia in the neonatal rat can impair auditory function and induce peripheral nerve pathology by reducing neurofilament-positive cells in spiral ganglion neurons (SGNs). This finding indicates a potential connection between hyperbilirubinemia and auditory impairment. OBJ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2014.938361
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVE:To develop a large animal model for studies of laryngeal abductor reinnervation. MATERIAL AND METHODS:Six minipigs underwent unilateral anastomosis of the phrenic nerve-abductor branch of the recurrent laryngeal nerve (RLN). Polyhydroxybutyrate (PHB) conduits were used for repair. At each of 30, 60 and 120 d...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480410022507
更新日期:2004-09-01 00:00:00
abstract:CONCLUSION:Coexistent migraine affects relevant clinical features of patients with Ménière's disease (MD). OBJECTIVE:Epidemiological studies have shown an association between migraine and MD. We sought to determine whether the coexistence of migraine affects any clinical features in patients with MD. PATIENTS AND MET...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480701242469
更新日期:2007-12-01 00:00:00
abstract::One hundred patients subjected to tonsillectomy because of recurrent acute tonsillitis or tonsillar hypertrophy were evaluated bacteriologically both with ordinary throat culturing and cultures from tonsillar cores. In 26% of the patients H. influenzae was isolated and in 20% beta-haemolytic group A streptococci. Grow...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489009107448
更新日期:1990-03-01 00:00:00
abstract::Aspiration biopsy is an accurate but still a somewhat controversial method of diagnosing salivary gland tumours preoperatively. During the last few years this method has been more and more accepted dependent on its increasing reliability in diagnosing the different types of tumours, but for an adequate treatment it is...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487609107505
更新日期:1976-05-01 00:00:00
abstract::Voluntary control of the human vestibulo-ocular reflex with and without visual targets was investigated. Subjects were rotated sinusoidally from 0.1 to 1.0 Hz using d.c. electro-oculography to record eye position. The ratio of eye to head movement, or gain, of the vestibulo-ocular reflex was measured. When subjects we...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487609107490
更新日期:1976-05-01 00:00:00
abstract:CONCLUSION:The addition of transoral robotic surgery (TORS) in the diagnostic management of patients classified with head and neck squamous cell carcinoma of unknown primary (SCCUP) is promising and appears to improve detection rates of the primary tumour. The approach presented in this first Scandinavian study could p...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1052983
更新日期:2015-01-01 00:00:00
abstract::Mononuclear host cells isolated from primary laryngeal carcinoma were assessed by means of indirect immunofluorescence with a panel of monoclonal antibodies against various lymphocyte subsets and macrophages. Tumours of various staging groups were examined in parallel with cells isolated from patient and donor periphe...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488809119459
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND:Tinnitus treatments present a quandary for clinicians, but no thoroughly satisfactory medical treatments are offered to tinnitus patients. OBJECTIVE:We compared sound therapy effects of the broad band noise (BBN) and the mixed pure tones on tinnitus patients with normal to mild hearing loss, and the possibl...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,随机对照试验
doi:10.1080/00016489.2019.1575522
更新日期:2019-03-01 00:00:00
abstract::Fibroblasts in two portions of the vocal fold mucosa, the macula flava (MF) and Reinke's space (RS), were investigated by means of transmission electron microscopy. Five adult and five newborn larynges from autopsy cases were subjected to study. Both in adults and newborns, fibroblasts in the MF tended to be stellate ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489950181800
更新日期:1999-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this prospective study was to analyze the effect of glasses and contact lenses on the latency and velocity of visually evoked saccadic eye movements. MATERIAL AND METHODS:A saccadic test was performed 10 times on 20 emmetropic controls (Group A) and 20 ametropic test subjects with myopia (Grou...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:
更新日期:2003-05-01 00:00:00
abstract::Conclusions Endoscopic surgery is safe and effective for children with congenital basal meningoencephaloceles (CBMs); it provides an acceptable operative outcome with a short recovery time and fewer complications and may be considered as a primary approach. Objectives To explore the safety and effectiveness of using t...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1133930
更新日期:2016-06-01 00:00:00
abstract:CONCLUSION:Our results indicate that siRNA E6 and/or E7 may have potential as a gene-specific therapy for human papillomavirus (HPV) type 16 (HPV16)-related squamous cell carcinoma of the head and neck (HNSCC). OBJECTIVES:To evaluate the effectiveness of siRNA targeting E6 and/or E7 on the in vitro and in vivo growth ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2013.773405
更新日期:2013-07-01 00:00:00
abstract::Nontypeable Haemophilus influenzae (NTHi) lipooligosaccharide, the major component of H. influenzae endotoxin, was localized in the middle and inner ear subsequent to the resolution of experimental otitis media induced by this pathogen. A monoclonal antibody specific for the lipooligosaccharide of this strain was used...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489950180838
更新日期:1999-01-01 00:00:00
abstract::Background: Betahistine is used worldwide to treat patients with Menière's disease. However, despite it being used for decades, diverging opinions on the effect of betahistine on Menière's symptomatology still exist.Aims: The objective of this systematic review was to provide an overview and rate the certainty of the ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2020.1777326
更新日期:2020-10-01 00:00:00
abstract:CONCLUSION:Salivary gland diseases should be handled with a high index of suspicion. Although an inference could be drawn it is not clear from this study if primary head and neck cancers (HNCs) have a significant association with HIV/AIDS. OBJECTIVE:HIV/AIDS manifestations and malignancies do occur in the head and nec...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480701230936
更新日期:2007-11-01 00:00:00
abstract:CONCLUSION:The results suggest that the beneficial effect of astragaloside IV on impulse noise-induced hearing loss may be due to its ability to inhibit reactive oxygen species (ROS) and prevent apoptosis. OBJECTIVE:Astragaloside IV is the major active constituent of Astragalus membranaceus, which has been widely used...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2011.643457
更新日期:2012-05-01 00:00:00
abstract::Laryngoscopy in cases of sulcus vocalis reveals bowed vocal folds, resulting in a spindle-shaped chink with glottal incompetence. The anatomic and functional problems and resulting incomplete glottal closure during phonation lead to the presenting symptoms of breathy hoarseness, decrease in maximum phonation time (MPT...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,评审
doi:10.3109/00016489.2014.999873
更新日期:2015-06-01 00:00:00
abstract::Smooth pursuit responses to sinusoidal and triangular waveform targets were investigated in elderly and middle-aged subjects. The middle-aged pursued triangular targets with significantly lower gain than sinusoidal targets. In the elderly, pursuit gain was significantly lower than in the middle-aged under all target c...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488709107331
更新日期:1987-09-01 00:00:00
abstract::Critical bandwidths and absolute intensity thresholds were measured in cats before and after kanamycin treatment which induced selective inner and outer hair cell losses. Hair cell losses were measured from cochleograms constructed from surface preparations of the organ of Corti. Results suggested that, for the test f...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487909137179
更新日期:1979-01-01 00:00:00
abstract:CONCLUSION:Nuclear expression of survivin should be studied as a promising marker of higher-risk laryngeal basaloid squamous cell carcinomas (BSCCs), which can then be treated more aggressively and followed more closely. OBJECTIVE:BSCC is an uncommon bimorphic variant of SCC. The hypothesized greater aggressiveness an...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480500266685
更新日期:2006-02-01 00:00:00
abstract:CONCLUSION:Delayed facial palsy after tympanoplasty had no predisposition for gender or side. It seemed that prednisolone alone without antiviral drugs was enough for the treatment of delayed facial palsy after tympanoplasty. OBJECTIVE:To analyze the clinical characteristics and prognosis of delayed facial palsy after...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2014.971464
更新日期:2015-02-01 00:00:00
abstract:CONCLUSION:The circling mouse (cir/cir) has phenotypes which follow the pattern of neuroepithelial defects of deafness from 10 days after birth. The cir mouse is defective in Tmie gene, the function of which should be further elucidated. OBJECTIVES:We previously reported a recessive mutation of deafness called circlin...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480600827071
更新日期:2007-03-01 00:00:00
abstract:OBJECTIVE:Temperature-controlled radiofrequency volumetric tissue reduction (RFVTR) is a minimally invasive technique used in the treatment of the tongue base, soft palate and turbinates. Complications seem to be rare, but the scope of previous studies was often limited by the small number of patients included. The aim...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480310001385
更新日期:2003-05-01 00:00:00
abstract::It is well documented that quinine induces reversible hearing loss and tinnitus. The purpose in this study was to induce a quinine hearing loss and to investigate if verapamil, a Ca2+ channel antagonist of L-type might affect the response. Pigmented guinea pigs (n = 24) were anaesthetized by atropine. Hypnorm and mida...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489709117990
更新日期:1997-01-01 00:00:00
abstract::Based on the late results of tympanoplasty on 300 ears and of one-stage mastoidectomy and tympanoplasty on 269 discharging ears, the problems involved in staging tympanoplasty are discussed. The results of one-stage operations were found to be satisfactory 2-10 years after operation. The frequency of recurrent cholest...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487609120906
更新日期:1976-09-01 00:00:00
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 theo...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480701840114
更新日期:2008-04-01 00:00:00