Auditory training and cognitive functioning in adult with traumatic brain injury

Murphy, Cristina Ferraz Borges; Fillippini, Renata; Palma, Debora; Zalcman, Tatiane Eisencraft; Lima, Janaína Patrício; Schochat, Eliane

doi:10.1590/s1807-59322011000400030

Cited by 16 publications

(20 citation statements)

References 7 publications

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“…The heterogeneity of TBI presents a significant problem for all fields of research and clinical practice, and the results of this study are in line with the idea that individuals with mTBI cannot be treated as a homogenous clinical population. Although further research is needed to better understand the relationship between auditory processing and overall mTBI outcomes, it has been shown in other populations that both subcortical and cortical processing can be affected by remediation including auditory training (Tremblay, K. et al 2001; Tremblay, K. L. & Kraus 2002; Hayes et al 2003; Russo, N. M. et al 2005; Murphy et al 2011). As axonal damage in mTBI is typically not visible on conventional imaging it is possible that both behavioral and objective audiological assessment may also help identify more subtle pathology in both acute and chronic post-injury stages as part of a multi-disciplinary team approach.…”

Section: Conclusion and Clinical Implicationsmentioning

confidence: 99%

Brainstem Evoked Potential Indices of Subcortical Auditory Processing After Mild Traumatic Brain Injury

Werff

Rieger

2017

Ear &Amp; Hearing

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Objectives The primary aim of this study was to assess subcortical auditory processing in individuals with chronic symptoms following mild traumatic brain injury (mTBI) by measuring auditory brainstem responses (ABRs) to standard click and complex speech stimuli. Consistent with reports in the literature of auditory problems following mTBI (despite normal hearing thresholds), it was hypothesized that individuals with mTBI would have evidence of impaired neural encoding in the auditory brainstem compared to non-injured controls, as evidenced by delayed latencies and reduced amplitudes of ABR components. We further hypothesized that the speech-evoked ABR would be more sensitive than the click-ABR to group differences due to its complex nature, particularly when recorded in a background noise condition. Design Click- and speech-ABRs were collected in 32 individuals diagnosed with mTBI in the past 3–18 months. All mTBI participants were experiencing on-going injury symptoms for which they were seeking rehabilitation through a brain injury rehabilitation management program. The same data were collected in a group of 32 age- and gender-matched controls with no history of head injury. ABRs were recorded in both left and right ears for all participants in all conditions. Speech-ABRs were collected in both quiet and in a background of continuous 20-talker babble ipsilateral noise. Peak latencies and amplitudes were compared between groups, and across subgroups of mTBI participants categorized by their behavioral auditory test performance. Results Click-ABR results were not significantly different between the mTBI and control groups. However, when comparing the control group to only those mTBI subjects with measurably decreased performance on auditory behavioral tests, small differences emerged including delayed latencies for waves I, III, and V. Similarly, few significant group differences were observed for peak amplitudes and latencies of the speech-ABR when comparing at the whole group level but were again observed between controls and those mTBI subjects with abnormal behavioral auditory test performance. These differences were seen for the onset portions of the speech-ABR waveforms in quiet, and were close to significant for the onset wave. Across groups, quiet vs. noise comparisons were significant for most speech-ABR measures but the noise condition did not reveal more group differences than speech-ABR in quiet, likely due to variability and overall small amplitudes in this condition for both groups. Conclusions The outcomes of this study indicate that subcortical neural encoding of auditory information is affected in a significant portion of individuals with long-term problems following mTBI. These subcortical differences appear to relate to performance on tests of auditory processing and perception, even in the absence of significant hearing loss on the audiogram. While confounds of age and slight differences in audiometric thresholds can’t be ruled out, these preliminary results are consistent with the id...

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Section: Conclusion and Clinical Implicationsmentioning

confidence: 99%

Brainstem Evoked Potential Indices of Subcortical Auditory Processing After Mild Traumatic Brain Injury

Werff

Rieger

2017

Ear &Amp; Hearing

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“…Além disso, esta habilidade também foi estimulada durante o treinamento auditivo, o que nos levaria a pensar que, desta forma, tanto os aspectos auditivos quanto cognitivos seriam infl uenciados positivamente no pós-treino. Murphy et al (2011), por exemplo, demonstraram que, após o treinamento auditivo, aplicado em indivíduo com traumatismo crânio-encefálico, houve melhora signifi cante em cinco das seis habilidades auditivas avaliadas e em cinco das sete habilidades cognitivas, demonstrando a presença de generalização do aprendizado sensorial para as habilidades cognitivas. Os autores concluíram, portanto, que mesmo a partir de um treinamento unimodal, que teve como objetivo melhorar a percepção dos sinais acústicos,foi possível observar uma infl uência positiva em habilidades consideradas "top-down", envolvendo tarefas multimodais.…”

Section: Correlações Antes E Após O Treino Entre Os Aspectos Auditiunclassified

Efeitos do treinamento auditivo em idosos com Comprometimento Cognitivo Leve

Avila¹,

Murphy²,

Schochat³

2014

Psicol. Reflex. Crit.

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ResumoIntrodução: Pesquisas demonstram a existência do Transtorno do Processamento Auditivo em indivíduos com Comprometimento Cognitivo Leve. Objetivo: Verifi car os efeitos de um treinamento auditivo, em indivíduos com comprometimento cognitivo leve. Métodos: Participaram 25 indivíduos, com idades entre 69 e 91 anos e diagnóstico de Comprometimento Cognitivo Leve, sendo que, 10 receberam treinamento auditivo (grupo estudo), 10 receberam treinamento visual (grupo alternativo) e cinco não receberam intervenção (grupo controle). Testes cognitivos e de processamento auditivo foram aplicados antes e após os treinamentos. Resultados: Apenas o grupo estudo apresentou melhora signifi cante para todas as habilidades auditivas testadas, mas com piora do desempenho para as habilidades cognitivas. Conclusão: O treinamento auditivo foi efetivo em relação às habilidades auditivas, mas não em relação às habilidades cognitivas. Palavras-chave: Reabilitação, percepção auditiva, cognição, demência. AbstractIntroduction: Studies have shown the presence of an Auditory Processing Disorder in individuals with mild cognitive impairment. Objective: To investigate the effect of an auditory training in individuals with mild cognitive impairment. Methods: Twenty-fi ve individuals with mild cognitive impairment and ages between 69 and 91 participated in the study. They were divided into three groups: a study group (10 subjects) who underwent an auditory training; an alternative group (10 subjects) who underwent to visual training and a control group (5 subjects) who did not receive any intervention. Results: After training, only the study group demonstrated better performance regarding all auditory abilities, but worse performance regarding cognitive abilities. Conclusion: Auditory training was effective regarding auditory abilities but not for cognitive abilities.

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“…After ACAT, it could be observed an improvement in the behavioral auditory processing evaluation, with an improvement or even adjustment in auditory abilities (Tables 1 to 4), which are commonly altered in individuals after TBI, as shown in some studies that performed auditory processing evaluation In this population [12][13][14] . The data found in the DCVT Test -Free Recall (Tables 2) demonstrated that the individual presented a greater number of right ear hits in the two moments after ACAT, that is, he showed an right ear advantage that he did not initially demonstrated, which is often associated to left hemispheric dominance for linguistic sounds in right-handed individuals 15 .…”

Section: Discussionmentioning

confidence: 70%

Treinamento auditivo acusticamente controlado em um indivíduo adulto após traumatismo cranioencefálico

2017

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Electrophysiological and behavioral assessment of auditory processing has been an important tool for the diagnosis and therapeutic monitoring in individuals after traumatic brain injury. In this case report, the patient underwent electrophysiological and behavioral assessment of auditory processing pre and post acoustically controlled auditory training (ACAT) and six months after the intervention. The ACAT was organized in eight sessions, focusing on the training of auditory abilities of temporal ordering, auditory closure and figure-ground. Post evaluation ACAT showed better results considering the processes of encoding, organization, and non-verbal. Electrophysiological evaluation showed improved morphology and shorter latencies in auditory brainstem response and higher amplitude of long latency auditory evoked potential (P300). During the reassessment six months after of the ACAT, stability and improved behavioral and electrophysiological evaluation were observed. Acoustically controlled auditory training proved to be effective in developing and refining different auditory abilities as demonstrated in electrophysiological and behavioral assessments of the central auditory processing and the benefits were stable long term. Keywords: Hearing; Neuronal Plasticity; Rehabilitation; Brain Injuries RESUMO A avaliação eletrofisiológica e comportamental do processamento auditivo tem sido uma importante ferramenta para o diagnóstico e monitoramento terapêutico de indivíduos pós traumatismo cranioencefálico. No presente relato de caso o paciente foi submetido à avaliação eletrofisiológica e comportamental do processamento auditivo pré e pós treinamento auditivo acusticamente controlado (TAAC) e seis meses após a intervenção. O TAAC foi organizado em oito sessões, enfocando o treinamento das habilidades auditivas de ordenação temporal, fechamento auditivo e figura-fundo. Na avaliação pós TAAC foi observada melhora quanto aos processos gnósicos de codificação, organização e não verbal. Em relação à avaliação eletrofisiológica houve melhora na morfologia e na latência das ondas do potencial evocado auditivo de tronco encefálico e na amplitude do componente potencial evocado auditivo de longa latência (P300). Na reavaliação após 6 meses do TACC foi verificada estabilidade e melhora da avaliação comportamental e eletrofisiológica. O treinamento auditivo acusticamente controlado mostrou-se eficaz ao desenvolver e refinar diferentes habilidades auditivas como demonstrado na avaliação eletrofisiológica e comportamental do processamento auditivo e os benefícios mostraram-se estáveis no longo prazo.

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Auditory training and cognitive functioning in adult with traumatic brain injury

Cited by 16 publications

References 7 publications

Brainstem Evoked Potential Indices of Subcortical Auditory Processing After Mild Traumatic Brain Injury

Brainstem Evoked Potential Indices of Subcortical Auditory Processing After Mild Traumatic Brain Injury

Efeitos do treinamento auditivo em idosos com Comprometimento Cognitivo Leve

Treinamento auditivo acusticamente controlado em um indivíduo adulto após traumatismo cranioencefálico

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