A propos d'un cas de surdité de l'hémisphère gauche (hémianacousie droite)

François, Michel; Péronnet, F; Schott, B

doi:10.1016/s0370-4475(76)80085-8

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…This dissociation between brainstem ERPs and middle-and long-latency ERPs was also described in the study by Rosati et al (1982) for a case of word deafness resulting from unilateral left hemisphere damage. Abnormalities in the ERPs recorded over temporal regions of the left hemisphere were described in one global aphasic (Michel et al, 1973) and in one patient affected by right hemianacousia and a related aphasic disorder (phonemic paraphasia) (Michel et al, 1976). It is, however, possible to observe dissociations between ERPs and verbal performance in aphasic patients as well.…”

Section: Language Disordersmentioning

confidence: 98%

“…Such results have been taken to suggest that subcortical transmission and basic processing of auditory information was spared whereas processing at the cortical level was impaired (Greenberg & Metting, 1974;Kileny, Paccioretti, & Wilson, 1987;Kraus, Ozdamar, Hier, & Stein, 1982;Leicester, 1980;McNeil, Darley, Olsen, &Rose, 1983;Michel, Peronnet, Labourel, & Martin, 1973;Michel, Peronnet, & Schott, 1976Ruhm, 197 1 ;Szirtes, Dieckmann, Rothenberger, & Jurgens, 1980). Abnormal P300 recordings over the left hemisphere were found during an auditory odd-ball task in 4 patients affected by primary progressive aphasia (Onofrj et al, 1994; see also Aaltonen, Tuomainen, Laine, & Niemi, 1993;Praamstra, Stegeman, Kooijman, & Moleman, 1993).…”

Section: Language Disordersmentioning

confidence: 99%

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Event-related potentials in brain-injured patients with neuropsychological disorders: A review

Viggiano

1996

Journal of Clinical and Experimental Neuropsychology

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Investigations using event-related potentials (ERPs) in brain-injured patients affected by neuropsychological disorders of perception, attention, memory, and language, and other special syndromes such as blind-sight, neglect, prosopagnosia, and apraxia are reviewed. These electrophysiological techniques can be used to assess the integrity of specific brain processes during the performance of cognitive tasks in which behavioral impairments are observed. A special feature of ERP technique is that it reveals ongoing and covert processing which may not be fully assessed by measuring only overt behavioral performance.

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Section: Language Disordersmentioning

confidence: 98%

Section: Language Disordersmentioning

confidence: 99%

Event-related potentials in brain-injured patients with neuropsychological disorders: A review

Viggiano

1996

Journal of Clinical and Experimental Neuropsychology

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“…Allerdings lassen sich durch Verwendung geeigneter Tests auch bei Patienten mit einseitiger zerebraler Läsion Defizite wie eine beeinträchtigte Diskrimination Tiefpaß-gefilterter sprachlicher Stimuli am gegenüberliegenden Ohr [28,84,85] oder eine gestörte Lokalisation von Schallquellen in der kontralateralen Raumhälfte [169] nachweisen. Gelegentlich kommt es schließlich auch nach unilateraler Schädigung des akustischen Kortex und/oder der Radiatio acustica zu einer einseitigen "zentralen Taubheit" [130,142] oder zur Ausbildung einer auditiven Agnosie. In diesen Fällen ordnen die Patienten ihre Hörstörung meist spontan dem zur Läsion kontralateralen Ohr zu [140,147,202] Neben einer Schädigung der Hirnrinde oder des Marklagers können auch einseitige subkortikale Läsionen, insbesondere im Bereich des Thalamus, zu einer einseitigen Beeinträchtigung des "Sprachgehörs" und der Klangwahrnehmung führen, vergesellschaftet mit relativ geringen audiometrischen Einbußen (Diskrepanz "des Gehörs für reine Töne und komplexe Klänge", vgl.…”

Section: Unilaterale Auditive Agnosieunclassified

Symptomatologie, pathologischanatomische Grundlaqen und Pathomechanismen zentraler Hörstörungen (reine Worttaubheit, auditive Agnosie, Rindentaubheit)

Ackermann¹,

Mathiak²

1999

Fortschr Neurol Psychiatr

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Pure word deafness (auditory verbal agnosia) is characterized by an impairment of auditory comprehension, repetition of verbal material and writing to dictation whereas spontaneous speech production and reading largely remain unaffected. Sometimes, this syndrome is preceded by complete deafness (cortical deafness) of varying duration. Perception of vowels and suprasegmental features of verbal utterances (e.g., intonation contours) seems to be less disrupted than the processing of consonants and, therefore, might mediate residual auditory functions. Often, lip reading and/or slowing of speaking rate allow within some limits to compensate for speech comprehension deficits. Apart from a few exceptions, the available reports of pure word deafness documented a bilateral temporal lesion. In these instances, as a rule, identification of nonverbal (environmental) sounds, perception of music, temporal resolution of sequential auditory cues and/or spatial localization of acoustic events were compromised as well. The observed variable constellation of auditory signs and symptoms in central hearing disorders following bilateral temporal disorders, most probably, reflects the multitude of functional maps at the level of the auditory cortices subserving, as documented in a variety of non-human species, the encoding of specific stimulus parameters each. Thus, verbal/nonverbal auditory agnosia may be considered a paradigm of distorted "auditory scene analysis" (Bregman 1990) affecting both primitive and schema-based perceptual processes. It cannot be excluded, however, that disconnection of the Wernicke-area from auditory input (Geschwind 1965) and/or an impairment of suggested "phonetic module" (Liberman 1996) contribute to the observed deficits as well. Conceivably, these latter mechanisms underly the rare cases of pure word deafness following a lesion restricted to the dominant hemisphere. Only few instances of a rather isolated disruption of the discrimination/identification of nonverbal sound sources, in the presence of uncompromised speech comprehension, have been reported so far (nonverbal auditory agnosia). As a rule, unilateral right-sided damage has been found to be the relevant lesion.

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The Sensible Brain: Adaptation as a Positive and as a Negative Factor in the Reorganization of Neuropsychological Systems After Brain Damage

Lavorel

1984

Adaptive Control of Ill-Defined Systems

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A propos d'un cas de surdité de l'hémisphère gauche (hémianacousie droite)

Cited by 6 publications

References 3 publications

Event-related potentials in brain-injured patients with neuropsychological disorders: A review

Event-related potentials in brain-injured patients with neuropsychological disorders: A review

Symptomatologie, pathologischanatomische Grundlaqen und Pathomechanismen zentraler Hörstörungen (reine Worttaubheit, auditive Agnosie, Rindentaubheit)

The Sensible Brain: Adaptation as a Positive and as a Negative Factor in the Reorganization of Neuropsychological Systems After Brain Damage

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