Ein Fall von reiner sensorischer Amusie

Quensel, F.; Pfeifer, Richard Arwed

doi:10.1007/bf01843112

“…Pure tone thresholds were [30][31][32][33][34][35][36][37][38][39][40] Instructions were given in writing, and two or more trials were administered until the patients understood the tasks. All auditory stimuli were presented binaurally by loudspeakers located 2 feet from the patient.…”

mentioning

confidence: 99%

Cortical auditory disorders: clinical and psychoacoustic features.

Mendez

¹

,

Geehan

²

1988

Journal of Neurology, Neurosurgery & Psychiatry

View full text Add to dashboard Cite

SUMMARYThe symptoms of two patients with bilateral cortical auditory lesions evolved from cortical deafness to other auditory syndromes: generalised auditory agnosia, amusia and/or pure word deafness, and a residual impairment of temporal sequencing. On investigation, both had dysacusis, absent middle latency evoked responses, acoustic errors in sound recognition and matching, inconsistent auditory behaviours, and similarly disturbed psychoacoustic discrimination tasks. These findings indicate that the different clinical syndromes caused by cortical auditory lesions form a spectrum of related auditory processing disorders. Differences between syndromes may depend on the degree of involvement of a primary cortical processing system, the more diffuse accessory system, and possibly the efferent auditory system.Since the original description in the late nineteenth century, a variety of disorders has been reported from bilateral lesions of the auditory cortex and its radiations. The clinical syndrome of cortical deafness in a woman with bitemporal infarction was described by Wernicke and Friedlander in 1883.' The term auditory agnosia was used by Freud in 1891,2 and has been used alternately for two observed syndromes: a selective decrease in recognition of non-verbal sounds and a generalised decrease in recognition of both verbal and non-verbal sounds. Lissauer (1890) proposed the existence of an apperceptive agnosia resulting from inability to synthesise sensory information into an adequate percept.3 Kussmaul (1877) first described a patient with pure word deafness,4 and Bernard (1889) noted an amusia where melodies lose their musical character. I Since that time, many other cases have been reported and attributed to lesions involving the cortical auditory areas.6-10It is still not fully understood how dysfunction of the cortex results in these diverse syndromes and whether they are functionally related or truly distinct.3 Investigators disagree as to whether true deafness can result from cortical lesions.6 1112 Case

show abstract

“…The perception, recognition, and joyful sensation of music can be affected by a stroke – a condition called acquired amusia. Impairments of music perception are widely reported in the literature [2] , [30] , [32] , [41] , [55] , and can occur after lesions to temporal, frontal, and parietal areas [4] , [10] , [11] , [18] , [25] , [35] , [39] , [40] , [44] , [45] , [46] , [47] , [50] , but also after subcortical lesions [19] .…”

Section: Introductionmentioning

confidence: 99%

Musical, visual and cognitive deficits after middle cerebral artery infarction

Rosemann

¹

,

Brunner

²

,

Kastrup

³

et al. 2017

View full text Add to dashboard Cite

The perception of music can be impaired after a stroke. This dysfunction is called amusia and amusia patients often also show deficits in visual abilities, language, memory, learning, and attention. The current study investigated whether deficits in music perception are selective for musical input or generalize to other perceptual abilities. Additionally, we tested the hypothesis that deficits in working memory or attention account for impairments in music perception. Twenty stroke patients with small infarctions in the supply area of the middle cerebral artery were investigated with tests for music and visual perception, categorization, neglect, working memory and attention. Two amusia patients with selective deficits in music perception and pronounced lesions were identified. Working memory and attention deficits were highly correlated across the patient group but no correlation with musical abilities was obtained. Lesion analysis revealed that lesions in small areas of the putamen and globus pallidus were connected to a rhythm perception deficit. We conclude that neither a general perceptual deficit nor a minor domain general deficit can account for impairments in the music perception task. But we find support for the modular organization of the music perception network with brain areas specialized for musical functions as musical deficits were not correlated to any other impairment.

show abstract

“…Pure tone thresholds were [30][31][32][33][34][35][36][37][38][39][40] (5) Discriminate as same or different between pairs of sequences of three sounds which varied in regularity, in frequency pattern, or in vowel sequence. In the first 10 trials, the three sounds were spaced apart at regular intervals of from 50-300 ms.…”

mentioning

confidence: 99%

Cortical auditory disorders: clinical and psychoacoustic features

Mendez¹

1999

View full text Add to dashboard Cite

SUMMARYThe symptoms of two patients with bilateral cortical auditory lesions evolved from cortical deafness to other auditory syndromes: generalised auditory agnosia, amusia and/or pure word deafness, and a residual impairment of temporal sequencing. On investigation, both had dysacusis, absent middle latency evoked responses, acoustic errors in sound recognition and matching, inconsistent auditory behaviours, and similarly disturbed psychoacoustic discrimination tasks. These findings indicate that the different clinical syndromes caused by cortical auditory lesions form a spectrum of related auditory processing disorders. Differences between syndromes may depend on the degree of involvement of a primary cortical processing system, the more diffuse accessory system, and possibly the efferent auditory system.Since the original description in the late nineteenth century, a variety of disorders has been reported from bilateral lesions of the auditory cortex and its radiations. The clinical syndrome of cortical deafness in a woman with bitemporal infarction was described by Wernicke and Friedlander in 1883.' The term auditory agnosia was used by Freud in 1891,2 and has been used alternately for two observed syndromes: a selective decrease in recognition of non-verbal sounds and a generalised decrease in recognition of both verbal and non-verbal sounds. Lissauer (1890) proposed the existence of an apperceptive agnosia resulting from inability to synthesise sensory information into an adequate percept.3 Kussmaul (1877) first described a patient with pure word deafness,4 and Bernard (1889) noted an amusia where melodies lose their musical character. I Since that time, many other cases have been reported and attributed to lesions involving the cortical auditory areas.6-10It is still not fully understood how dysfunction of the cortex results in these diverse syndromes and whether they are functionally related or truly distinct.3 Investigators disagree as to whether true deafness can result from cortical lesions. Other studies indicate that pure word deafness and the auditory agnosias may be functionally related auditory perceptual disturbances. "5 l 7In addition, the clinical evolution and substantial overlap between these disorders suggest that these are related disorders and should have similar underlying psychoacoustic abnormalities.A review of the clinical characteristics and psychoacoustic findings of the cortical auditory disorders clarifies whether these are a spectrum of related disorders. We investigated two new patients whose condition evolved from "cortical deafness", absent response to sound with decreased hearing thresholds, to disturbances of sound recognition. We used evoked responses and psychoacoustic tests and compared our findings with all similarly studied cases in the literature. These findings suggested a model of dysfunction of the auditory cortex.

show abstract

Ein Fall von reiner sensorischer Amusie

Cited by 4 publications

References 0 publications

Cortical auditory disorders: clinical and psychoacoustic features.

Cortical auditory disorders: clinical and psychoacoustic features.

Musical, visual and cognitive deficits after middle cerebral artery infarction

Cortical auditory disorders: clinical and psychoacoustic features

Contact Info

Product

Resources

About