Cortical Deafness Due to Ischaemic Strokes in Both Temporal Lobes

Lachowska Magdalena; Pastuszka Agnieszka; Sokołowsk Jacek; Szczudlik Piotr; Niemczyk Kazimierz

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자료유형: 학술저널

저자정보: Lachowska Magdalena (Department of Otorhinolaryngology Head and Neck Surgery Medical University of Warsaw Warsaw Poland) Pastuszka Agnieszka (Department of Otorhinolaryngology Head and Neck Surgery Medical University of Warsaw Warsaw Poland) Sokołowsk Jacek (Department of Otorhinolaryngology Head and Neck Surgery Medical University of Warsaw Warsaw Poland) Szczudlik Piotr (Department of Neurology Medical University of Warsaw Warsaw Poland) Niemczyk Kazimierz (Department of Otorhinolaryngology Head and Neck Surgery Medical University of Warsaw Warsaw Poland)

저널정보: 대한청각학회 Journal of Audiology & Otology Journal of Audiology & Otology Vol.25 No.3

발행연도: 2021.1

수록면: 163 - 170 (8page)

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Cortical deafness is a clinical rarity whereby a patient is unresponsive to all types of sounds despite the preserved integrity of the peripheral hearing organs. In this study, we present a patient who suddenly lost his hearing following ischaemic infarcts in both temporal lobes with no other neurological deficits. The CT confirmed damage to the primary auditory cortex (Heschl’s gyrus) of both hemispheres. Initially, the patient was unresponsive to all sounds, however, he regained some of the auditory abilities during 10 months follow up. Pure tone threshold improvement from complete deafness to the level of moderate hearing loss in the right ear and severe in the left was observed in pure tone audiometry. Otoacoustic emissions, auditory brainstem responses, and acoustic reflex findings showed normal results. The middle and late latency potential results confirmed objectively the improvement of the patient’s hearing, however, after 10 months still, they were somewhat compromised on both sides. In speech audiometry, there was no comprehension of spoken words neither at 3 nor at 10 months. The absent mismatch negativity confirmed above mentioned comprehension deficit. The extensive auditory electrophysiological testing presented in this study contributes to the understanding of the neural and functional changes in cortical deafness. It presents the evolution of changes after ischaemic cerebrovascular event expressed as auditory evoked potentials starting from short through middle and long latency and ending with event-related potentials and supported by neuroimaging.

#Evoked potentials · Hearing loss · Ischaemic stroke · Electrophysiology · Central nervous system

참고문헌 (1)

참고문헌 신청

Engelien A / 2000 / The neural correlates of ‘deaf-hearing’ in man : conscious sensory awareness enabled by attentional modulation / Brain 123(Pt 3):532~545

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Lachowska Magdalena

소속기관 Department of Otorhinolaryngology Head and Neck Surgery Medical University of Warsaw Warsaw Poland