Auditory agnosia restricted to environmental sounds following cortical deafness and generalized auditory agnosia

Taniwaki, Takayuki; Tagawa, Koichi; Sato, Fumio; Iino, Kozo

doi:10.1016/s0303-8467(00)00090-1

Cited by 40 publications

(32 citation statements)

References 16 publications

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“…18,19) These articles suggest that such impairment is probably caused by damage to the acoustic radiations that pass the relatively narrow portion between the caudal end of the putamen and the internal capsule. In reference to the standard brain map transformed into the patient's individual brain space, this case report revealed for the first time that the neural lesions of such a patient directly hit the acoustic radiations bilaterally.…”

Section: Discussionmentioning

confidence: 99%

A Case of Hearing Loss after Bilateral Putaminal Hemorrhage: A Diffusion-tensor Imaging Study

Koyama

Domen

2016

PRM

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Section: Discussionmentioning

confidence: 99%

A Case of Hearing Loss after Bilateral Putaminal Hemorrhage: A Diffusion-tensor Imaging Study

Koyama

Domen

2016

PRM

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“…Clinically, it has been reported that a small haemorrhagic infarction located in the nucleus has caused auditory illusions, such as hyperacousia and palinacousia [57], dichotic listening and complete extinction of the contralateral ear input [53]. Lesions, such as bilateral putaminal haemorrhage, involving the acoustic radiation cause auditory agnosia for all sounds or for environmental sounds only [185].…”

Section: Regio Superiormentioning

confidence: 99%

Functional anatomy of thalamus and basal ganglia

Herrero

Barcia

Navarro

2002

Child's Nervous System

583

415

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THALAMUS: The human thalamus is a nuclear complex located in the diencephalon and comprising of four parts (the hypothalamus, the epythalamus, the ventral thalamus, and the dorsal thalamus). The thalamus is a relay centre subserving both sensory and motor mechanisms. Thalamic nuclei (50-60 nuclei) project to one or a few well-defined cortical areas. Multiple cortical areas receive afferents from a single thalamic nucleus and send back information to different thalamic nuclei. The corticofugal projection provides positive feedback to the "correct" input, while at the same time suppressing irrelevant information. Topographical organisation of the thalamic afferents and efferents is contralateral, and the lateralisation of the thalamic functions affects both sensory and motoric aspects. Symptoms of lesions located in the thalamus are closely related to the function of the areas involved. An infarction or haemorrhage thalamic lesion can develop somatosensory disturbances and/or central pain in the opposite hemibody, analgesic or purely algesic thalamic syndrome characterised by contralateral anaesthesia (or hypaesthesia), contralateral weakness, ataxia and, often, persistent spontaneous pain. BASAL GANGLIA: Basal ganglia form a major centre in the complex extrapyramidal motor system, as opposed to the pyramidal motor system (corticobulbar and corticospinal pathways). Basal ganglia are involved in many neuronal pathways having emotional, motivational, associative and cognitive functions as well. The striatum (caudate nucleus, putamen and nucleus accumbens) receive inputs from all cortical areas and, throughout the thalamus, project principally to frontal lobe areas (prefrontal, premotor and supplementary motor areas) which are concerned with motor planning. These circuits: (i) have an important regulatory influence on cortex, providing information for both automatic and voluntary motor responses to the pyramidal system; (ii) play a role in predicting future events, reinforcing wanted behaviour and suppressing unwanted behaviour, and (iii) are involved in shifting attentional sets and in both high-order processes of movement initiation and spatial working memory. Basal ganglia-thalamo-cortical circuits maintain somatotopic organisation of movement-related neurons throughout the circuit. These circuits reveal functional subdivisions of the oculomotor, prefrontal and cingulate circuits, which play an important role in attention, learning and potentiating behaviour-guiding rules. Involvement of the basal ganglia is related to involuntary and stereotyped movements or paucity of movements without involvement of voluntary motor functions, as in Parkinson's disease, Wilson's disease, progressive supranuclear palsy or Huntington's disease. The symptoms differ with the location of the lesion. The commonest disturbances in basal ganglia lesions are abulia (apathy with loss of initiative and of spontaneous thought and emotional responses) and dystonia, which become manifest as behavioural and motor disturbances, respectively.

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“…2,3,6,13 To date, cortical deafness has been reported in only 2 cases of SAH. In one case, an old infarction was found in the left temporal lobe prior to the occurrence of SAH.…”

Section: Discussionmentioning

confidence: 99%

Partly reversible central auditory dysfunction induced by cerebral vasospasm after subarachnoid hemorrhage

Ponzetto

Vinetti

Grandin³

et al. 2013

JNS

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The authors describe a rare case of central auditory dysfunction induced by cerebral vasospasm after aneurysmal subarachnoid hemorrhage (SAH). A 55-year-old woman who was admitted after aneurysmal SAH developed cerebral vasospasm on Day 3 affecting mainly the right middle cerebral artery (MCA) and partly the left MCA. The vasospasm became refractory to conventional therapy and was ultimately improved by intraarterial infusion of nimodipine in the right MCA and angioplasty. Severe auditory dysfunction was apparent from Day 10 as the patient was not reactive to speech or environmental sounds. Brain MRI on Day 17 demonstrated infarcted areas mainly in the right hippocampus, medial occipital lobe, and thalamus. The patient underwent further examination using audiometry, speech testing, auditory evoked potentials, functional MRI, and cerebral PET. The initial diagnosis was extended nonverbal agnosia and total pure word deafness. The central auditory dysfunction improved over 6 months, with persisting hyperacusis, tinnitus, and amusia. Central auditory dysfunction is a rare complication after SAH. While cortical deafness may be associated with bilateral lesions of the temporal cortex, partly reversible central auditory dysfunction was observed in this patient after prominently unilateral right temporal lesions. The role of the interthalamic connections can be discussed, as well as the possibility that a less severe vasospasm on the left MCA could have transiently impaired the left thalamocortical auditory pathways.

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Auditory agnosia restricted to environmental sounds following cortical deafness and generalized auditory agnosia

Cited by 40 publications

References 16 publications

A Case of Hearing Loss after Bilateral Putaminal Hemorrhage: A Diffusion-tensor Imaging Study

A Case of Hearing Loss after Bilateral Putaminal Hemorrhage: A Diffusion-tensor Imaging Study

Functional anatomy of thalamus and basal ganglia

Partly reversible central auditory dysfunction induced by cerebral vasospasm after subarachnoid hemorrhage

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