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Titolo:
Auditory dysfunction in stroke
Autore:
Hausler, R; Levine, RA;
Indirizzi:
Univ Bern, Inselspital, Dept ENT Head & Neck Surg, CH-3010 Bern, Switzerland Univ Bern Bern Switzerland CH-3010 Neck Surg, CH-3010 Bern, Switzerland Harvard Univ, Massachusetts Eye & Ear Infirm, Eaton Peabody Lab Auditory Physiol, Massachusetts Gen Hosp,Auditory Neurol Unit, Boston, MA USA HarvardUniv Boston MA USA Gen Hosp,Auditory Neurol Unit, Boston, MA USA
Titolo Testata:
ACTA OTO-LARYNGOLOGICA
fascicolo: 6, volume: 120, anno: 2000,
pagine: 689 - 703
SICI:
0001-6489(200009)120:6<689:ADIS>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRAIN-STEM LESIONS; MULTIPLE-SCLEROSIS; EVOKED-POTENTIALS; CLINICAL SYNDROMES; CEREBELLAR ARTERY; DISCRIMINATION; HEARING; LATERALIZATION; INFARCTION; HALLUCINATIONS;
Keywords:
auditory system; hearing evaluation; stroke; central hearing loss; tinnitus; sound localization; auditory hallucination; cortical deafness;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
100
Recensione:
Indirizzi per estratti:
Indirizzo: Hausler, R Univ Bern, Inselspital, Dept Otorhinolaryngol Head & Neck & Craniomaxillo,CH-3010 Bern, Switzerland Univ Bern Bern Switzerland CH-3010 ,CH-3010 Bern, Switzerland
Citazione:
R. Hausler e R.A. Levine, "Auditory dysfunction in stroke", ACT OTO-LAR, 120(6), 2000, pp. 689-703

Abstract

The auditory and vestibular systems share the same end organ and cranial nerve, yet vestibular signs and symptoms are common with stroke, whereas hearing disturbances are much less frequent. Several reasons would appear to account For this striking dissimilarity. One is that the auditory pathway isless ubiquitous than the vestibular pathways. The likelihood that a strokeinvolves the auditory pathway is, therefore, less on this basis alone. A second difference, to our knowledge not previously reported, is that the auditory pathway is often spared by the most common strokes. This is because major parts of the auditory pathway, such as the cochlear nucleus, inferior colliculus and medial geniculate body, have multiple sources of blood supply. A third well-recognized factor is the redundancy of the central auditorysystem and its strong bilateral representation above the level of the cochlear nuclei. Consequently, rostral to the cochlear nuclei gross deficits inhearing, such as those measured by standard pure-tone audiometry and speech discrimination, only occur if lesions are bilateral. Furthermore, widespread bilateral lesions of the auditory system typically render the patient unable to respond or are incompatible with life. In contrast, language disorders are more frequent because language is usually unilaterally representedin the cortex. Certainly, cerebral stroke often includes the auditory system, resulting in various types of auditory disorders, but most hemispherical lesions produce subtle hearing dysfunctions that can only be detected with sophisticated psychoacoustic acid electrophysiological testing. The purpose of this review is to provide an overview of the auditory system and its blood supply and to review how auditory processing can be affected by stroke. Psychoacoustic and electrophysiological test procedures for identifying lesions in the central auditory system are described. The literature of hearing disorders due to stroke is reviewed and illustrative cases are presented.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 12:43:52