P300 response to tones and speech sounds after cochlear implant: A case report

Kaga, Kimitaka; Kodera, Kazuoki; Hirota, Eiko; Tsuzuku, Toshihiro

doi:10.1288/00005537-199108000-00017

Cited by 37 publications

(28 citation statements)

References 6 publications

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“…Performance on behavioural tests of auditory processing is affected by factors such as task learning and motivation level. There is increasing evidence that auditory evoked potentials can be used as an objective, non-invasive tool to investigate auditory processing and plasticity of auditory function in humans [Eggermont et al, 1997;Jordan et al, 1997;Kaga et al, 1991;Kraus, 1999;Kraus et al, 1995Kraus et al, , 1998aMenning et al, 2000;Ponton et al, 1996aPonton et al, , b, 1999Ponton et al, , 2000aTremblay et al, 1997Tremblay et al, , 1998Tremblay et al, , 2001. Results from electroencephalographic evoked potential studies are consistent with magnetoencephalographic evidence for auditory plasticity in human listeners [Pantev et al, 1999[Pantev et al, , 2001Pantev and Lutkenhorner, 2000].…”

Section: Introductionmentioning

confidence: 78%

“…There is evidence from both adults and children receiving cochlear implants that improvements in speech perception are accompanied by changes in cortical auditory evoked potentials [Eggermont et al, 1997;Jordan et al, 1997;Kaga et al, 1991;Ponton et al, 1996aPonton et al, , b, 1999Ponton et al, , 2000a. Ponton et al have found that P1 follows the normal sequence of development in implanted children once a cochlear implant is switched on, but P1 development is delayed by the time without sound.…”

Section: Effects Of Auditory Training and Experience On Auditory Evokmentioning

confidence: 99%

“…Time axis is from -100 to +400 ms. Y axis is 1 ÌV per division. adult cochlear implantees [Jordan et al, 1997;Kaga et al, 1991].…”

Section: Effects Of Auditory Training and Experience On Auditory Evokmentioning

confidence: 99%

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Auditory Evoked Potentials as Measures of Plasticity in Humans

2001

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There is increasing evidence from animal studies for plasticity of auditory function. This has prompted research to determine whether such plastic changes occur in adults and children with hearing disorders. Behavioural measures such as speech perception scores do show improvements after hearing aid fitting and cochlear implantation. Several studies have also shown changes in cortical auditory evoked potentials after cochlear implantation and after auditory training. These studies indicate that improvements in speech perception ability are associated with changes in the central auditory system, particularly at the cortical level.

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Section: Introductionmentioning

confidence: 78%

Section: Effects Of Auditory Training and Experience On Auditory Evokmentioning

confidence: 99%

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Auditory Evoked Potentials as Measures of Plasticity in Humans

2001

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“…EABR studies on man have shown a waveform Task-related P300 measurements using tone bursts in patients with a Cl were performed by Kaga et al (14) and Oviatt and Kileny (11). It was argued that morphology which is comparable with that found the P300 latency might be related to Lhe phonemic during acoustic stimulation, but with shorter latencies and linguistic discrimination abilities of Cl patients (4, 6-10).…”

Section: Introductionmentioning

confidence: 99%

The Relation between Electric Auditory Brain Stem and Cognitive Responses and Speech Perception in Cochlear Implant Users

Groenen¹,

Makhdoum²,

Brink³

et al. 1996

Acta Oto-Laryngologica

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Groenen PÀP, Makhdouni M, van den Brink JL, Stoll man MHP, Snik AFM, vtin den Broek P, The relation between electric auditory brain stem and cognitive responses and speech perception in cochlear implant users. Acta Otolaryngol (Stockh) 1996; 116: 785-790. Electrically evoked brainstem responses (EABR) and event-related cortical potentials were recorded in seven postlingually deaf adults who were experienced users of a Nuclcus multichannel cochlear implant. The patients were divided into two subgroups: good performers and moderate performers, Poor EABR were found in two of the moderate performers. The latencies and amplitudes of the cortical N1-P2 complex in the good performers were within the same range as those of subjects with normal hearing, but were deviant in the group of moderate performers. This may indicate disturbed cochleotopical organization of the auditory cortex in the latter group. P300 measurements in the good performers showed normal latencies, whereas in the moderate performers they were prolonged. The results suggest that the outcomes of electrophysiological measurements to assess the integrity of a patient's auditory neural system on a brainstem and. a cortical level, are related to the patient's performance with the cochlear implant.

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“…Reports of late auditory potentials evoked with electrical stimulation have included recordings of the N1, P2, P300, and mismatch negativity (MMN) response elicited with pulsed tones (Oviatt & Kileny, 1991), stimulated electrode pairs (Makhdoum, Groenen, Snik, & van den Broek, 1997;Ponton & Don, 1995), and speech (Kaga, Kodera, Hirota, & Tsuzuka, 1991;Kraus et al, 1993;Micco et al, 1995). Results suggest that cortical responses provide a mechanism for understanding how electrical stimuli are registered by the central auditory system.…”

mentioning

confidence: 99%

Neurophysiology of Cochlear Implant Users II: Comparison Among Speech Perception, Dynamic Range, and Physiological Measures

2002

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Objective: As the need for objective measures with cochlear implant users increases, it is critical to understand how electrical potentials behave when stimulus parameters are systematically varied. The purpose of this study was to record and evaluate the effects of implanted electrode site and stimulus current level on latency, amplitude, and threshold measures of electrically evoked auditory potentials, representing brainstem and cortical levels of the auditory system. Design:The electrical auditory brainstem response (EABR), electrical auditory middle latency response (EAMLR), and the electrical late auditory response (ELAR) were recorded from the same experimental subjects, 11 adult Clarion cochlear implant users. The Waves II, III, and V of the EABR, the Na-Pa complex of the EAMLR and the N1-P2 complex of the ELAR were investigated relative to electrode site (along the intra-cochlear electrode array) and stimulus current level. Evoked potential measures were examined for statistical significance using analysis of variance (ANOVA) for repeated measures.Results: For the EABR, Wave V latency was significantly longer for the basal electrode (7) compared with the mid (4) and apical (1) electrodes. For the EAMLR and ELAR, there were no significant differences in latency by electrode site. For all subjects and each of the evoked potentials, the apical electrodes tended to have the largest amplitude and the basal electrodes the smallest amplitude, although amplitude differences did not reach statistical significance. In general, decreases in stimulus current level resulted in statistically significant decreases in the amplitude of Wave V, Na-Pa and N1-P2. The evoked potential thresholds for Wave V, Na-Pa, and N1-P2 were significantly higher for the basal Electrode 7 than for Electrodes 4 and 1. Conclusions: Electrophysiologic responses of Waves

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P300 response to tones and speech sounds after cochlear implant: A case report

Cited by 37 publications

References 6 publications

Auditory Evoked Potentials as Measures of Plasticity in Humans

Auditory Evoked Potentials as Measures of Plasticity in Humans

The Relation between Electric Auditory Brain Stem and Cognitive Responses and Speech Perception in Cochlear Implant Users

Neurophysiology of Cochlear Implant Users II: Comparison Among Speech Perception, Dynamic Range, and Physiological Measures

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