Hearing disorders in brainstem lesions

Celesia, Gastone G.

doi:10.1016/b978-0-444-62630-1.00029-9

Cited by 12 publications

(6 citation statements)

References 162 publications

(209 reference statements)

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“…Therefore, unilateral compression at the inferior colliculus level could cause bilateral hearing impairment. 10) In our case, MRI showed a large pineal cyst that compressed the upper pons and midbrain from the left side, which suggested compression of the lateral lemnisci and inferior colliculi and led to bilateral hearing impairment.…”

Section: Discussionmentioning

confidence: 51%

“…BAEPs can reveal wave V loss or reduction in the case of midbrain or upper pons lesions. 10) However, even under normal conditions, roughly 15–20% of all cases have the wave IV–V complex, 11) which indicates that abnormalities of BAEPs do not always imply the presence of a hearing deficit 12 , 13) and diagnosis of the cause of hearing impairment should not be solely based on BAEPs. In our case, there were no clear abnormal lesions in the middle or inner ear, and the patient exhibited progressive bilateral hearing loss.…”

Section: Discussionmentioning

confidence: 99%

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Reversible Hearing Impairment Due to Inferior Colliculi Compression by a Pineal Glial Cyst

Mizobuchi

Shimada

Nakajima

et al. 2021

NMC Case Report Journal

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Pineal glial cysts associated with bilateral hearing impairment are very rare. Here, we present the case of a 13-year-old boy with a pineal cyst, which caused severe bilateral hearing impairment persisting from 6 years of age. When the patient was 6 years old, the bilateral hearing acuity was about 40 dB on audiometry. Upon admission to our otolaryngology department, his audiogram revealed a bilateral worsening of the hearing acuity (80 dB). Magnetic resonance imaging (MRI) revealed an abnormal pineal cyst with tectal compression from the left with hardly normal bilateral brainstem auditory evoked potentials (BAEPs). We obtained informed consent for exploratory surgery and employed the right occipital transtentorial approach for pineal cyst removal. Based on histological examination, we diagnosed a glial cyst of the pineal gland. At 12 months postoperatively, the patient's hearing improved, showing a bilateral hearing acuity of 40 dB on audiometry. Since the auditory pathway has both crossed and uncrossed fibers at the upper pons and midbrain level, compression at the lateral lemniscus or inferior colliculus level can cause bilateral hearing impairment. In the present case, there was a possible slow pineal cyst growth that eventually compressed the upper pons to the midbrain, lateral lemniscuses, or inferior colliculi from the left side, this eventually led to bilateral hearing impairment. These findings indicate that surgery can improve hearing acuity in patients with a pineal cyst associated with progressive hearing impairment.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Reversible Hearing Impairment Due to Inferior Colliculi Compression by a Pineal Glial Cyst

Mizobuchi

Shimada

Nakajima

et al. 2021

NMC Case Report Journal

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“…This redundancy may explain why small brainstem lesions are often clinically silent. 4 Literature's reported auditory findings of the unilateral lesions in the region of inferior colliculus are bilateral normal pure tone audiogram, tinnitus at the contralateral side, normal as well as contralateral or bilaterally impaired speech discrimination and detection threshold tests, a deficit in sound localization contralateral to the lesion, difficulty in understanding speech in noisy environments, and bilateral abnormality in auditory brainstem response. [5][6][7] Our patient had contralateral tinnitus, similar to other cases in the literature.…”

Section: Discussionmentioning

confidence: 99%

Contralateral tinnitus and hearing loss due to a tumor at the region of inferior colliculus: illustrative case

Eftekharian¹,

Sharifi²,

Eftekharian³

et al. 2022

Journal of Neurosurgery: Case Lessons

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BACKGROUND Subjective hearing loss resulting from unilateral lesions of the quadrigeminal cistern region or inferior colliculus is a rare entity. OBSERVATIONS The authors presented the case of a 32-year-old man with a history of 4 months of nonpulsatile tinnitus and 1 month of unilateral sensorineural hearing loss. He was otherwise healthy with no significant previous medical history. Intravenous gadolinium contrast magnetic resonance imaging of the head revealed a lesion at the region of the left inferior colliculus suggestive of a lipoma. The tumor was removed, and the patient had no significant hearing change afterward, with an improvement in tinnitus. The histological examination demonstrated the tumor as a fibrolipoma. LESSONS Contralateral subjective hearing loss is an uncommon presentation for a lesion in the region of the inferior colliculus.

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“…That said, it is also worth bearing in mind that the amplitude of the binaural interaction component (BIC) of the auditory brainstem response (ABR) relates directly to the perceived location of sounds (see Laumen et al ., , for a review). Furthermore, given that ILD and ITD are calculated in nuclei in the brainstem (MSO and LSO; see Celesia, ), and given the fact that the IC contains a map of auditory space, it would seem reasonable to suggest that the rapid orienting to sounds is mainly driven by brainstem activity. The subcortical structures are clearly not independent from cortical processing, but they are largely responsible for reflexive crossmodal orienting.…”

Section: Directing Spatial Attention To the Rearmentioning

confidence: 99%

Responding to sounds from unseen locations: crossmodal attentional orienting in response to sounds presented from the rear

Spence

Lee

Stoep

2017

Eur J of Neuroscience

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To date, most of the research on spatial attention has focused on probing people's responses to stimuli presented in frontal space. That is, few researchers have attempted to assess what happens in the space that is currently unseen (essentially rear space). In a sense, then, 'out of sight' is, very much, 'out of mind'. In this review, we highlight what is presently known about the perception and processing of sensory stimuli (focusing on sounds) whose source is not currently visible. We briefly summarize known differences in the localizability of sounds presented from different locations in 3D space, and discuss the consequences for the crossmodal attentional and multisensory perceptual interactions taking place in various regions of space. The latest research now clearly shows that the kinds of crossmodal interactions that take place in rear space are very often different in kind from those that have been documented in frontal space. Developing a better understanding of how people respond to unseen sound sources in naturalistic environments by integrating findings emerging from multiple fields of research will likely lead to the design of better warning signals in the future. This review highlights the need for neuroscientists interested in spatial attention to spend more time researching what happens (in terms of the covert and overt crossmodal orienting of attention) in rear space.

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Hearing disorders in brainstem lesions

Cited by 12 publications

References 162 publications

Reversible Hearing Impairment Due to Inferior Colliculi Compression by a Pineal Glial Cyst

Reversible Hearing Impairment Due to Inferior Colliculi Compression by a Pineal Glial Cyst

Contralateral tinnitus and hearing loss due to a tumor at the region of inferior colliculus: illustrative case

Responding to sounds from unseen locations: crossmodal attentional orienting in response to sounds presented from the rear

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