Restoration of sensory input may improve cognitive and neural function

Karawani, Hanin; Jenkins, Kimberly; Anderson, Samira

doi:10.1016/j.neuropsychologia.2018.04.041

Cited by 48 publications

(65 citation statements)

References 57 publications

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“…Further, cognitive gains in their hearing loss group were associated with P2 cortical auditory evoked potential (CAEP) amplitudes, suggesting that increased auditory input may provide neurocognitive benefit. Our findings are also supported by experimental evidence by Deal et al (2017) and Karawani et al (2018a), where hearing aid treatment over longer durations (>6 months) in similar ARHL populations resulted in significant improvements in cognitive function the cognitive domains of global cognitive abilities and processing speed (Deal et al, 2017) as well as improvements in working memory (Karawani et al, 2018b). In addition, long-term neurocognitive benefit has been reported in deaf adult cochlear implant recipients at 6 months and 1 year post post-treatment, where notable gains were observed in the areas of global cognitive function and executive function (Mosnier et al, 2015).…”

Section: Potential For Hearing Aid Use To Reverse Visual Cortical Crosupporting

confidence: 85%

Cortical Neuroplasticity and Cognitive Function in Early-Stage, Mild-Moderate Hearing Loss: Evidence of Neurocognitive Benefit From Hearing Aid Use

Glick

Sharma

2020

Front. Neurosci.

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Age-related hearing loss (ARHL) is associated with cognitive decline as well as structural and functional brain changes. However, the mechanisms underlying neurocognitive deficits in ARHL are poorly understood and it is unclear whether clinical treatment with hearing aids may modify neurocognitive outcomes. To address these topics, cortical visual evoked potentials (CVEPs), cognitive function, and speech perception abilities were measured in 28 adults with untreated, mild-moderate ARHL and 13 agematched normal hearing (NH) controls. The group of adults with ARHL were then fit with bilateral hearing aids and re-evaluated after 6 months of amplification use. At baseline, the ARHL group exhibited more extensive recruitment of auditory, frontal, and pre-frontal cortices during a visual motion processing task, providing evidence of cross-modal re-organization and compensatory cortical neuroplasticity. Further, more extensive cross-modal recruitment of the right auditory cortex was associated with greater degree of hearing loss, poorer speech perception in noise, and worse cognitive function. Following clinical treatment with hearing aids, a reversal in cross-modal reorganization of auditory cortex by vision was observed in the ARHL group, coinciding with gains in speech perception and cognitive performance. Thus, beyond the known benefits of hearing aid use on communication, outcomes from this study provide evidence that clinical intervention with well-fit amplification may promote more typical cortical organization and functioning and provide cognitive benefit.

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Section: Potential For Hearing Aid Use To Reverse Visual Cortical Crosupporting

confidence: 85%

Cortical Neuroplasticity and Cognitive Function in Early-Stage, Mild-Moderate Hearing Loss: Evidence of Neurocognitive Benefit From Hearing Aid Use

Glick

Sharma

2020

Front. Neurosci.

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“…In another prospective study of 125 individuals aged 65 years and older, individuals with hearing aids had significant improvements in short-term memory ( Castiglione et al, 2016 ). More recently, a randomized study of 32 older adults with moderate to severe HL found that those randomized to hearing aid use demonstrated improved memory after 6 months of hearing aid use; the authors concluded that hearing aid use may improve cognition ( Karawani, Jenkins, & Anderson, 2018 ). Thus, it appears that larger prospective controlled trials are needed to understand whether or not hearing aids improve cognition among those with HL.…”

Section: Discussionmentioning

confidence: 99%

Characteristics and Health Outcomes Associated With Hearing Loss and Hearing Aid Use Among Older Adults

et al. 2019

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Background: This study recruited older adults to explore physical and psychosocial conditions and other health outcomes associated with hearing loss (HL) and hearing aid use. Method: Survey data were used to categorize 20,244 participants into five groups: no HL, unaided mild HL, aided mild HL, unaided severe HL, and aided severe HL. Results: Individuals with unaided severe HL were more likely to report poor-fair self-rated health and were less likely to leave the home, or exercise 4 to 7 days per week, while there were no such associations for those with aided mild or severe HL. In addition, those with aided hearing were less likely to report depression, low social support, or mobility limitations. Discussion: In several instances, hearing aid use reduced associations between HL and negative psychosocial and physical characteristics, and health outcomes. More research using longitudinal study designs is needed to better understand the true implications of these findings.

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“…Audiological rehabilitation including use of hearing aids (which amplify weak sounds) are common treatments for HL. Auditory rehabilitation, training and use of hearing aids have shown to improve hearing, including the cortical and subcortical processing of speech, and associated cognitive function 66,67. Relatedly, use of hearing aids and auditory rehabilitation has been reported to mitigate depression symptoms 68–70.…”

Section: Clinical Implications: Interventionmentioning

confidence: 99%

<p>Depression in elderly patients with hearing loss: current perspectives</p>

Cosh¹,

Helmer²,

Delcourt³

et al. 2019

CIA

112

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Hearing loss (HL) is highly common in older adulthood, constituting the third most prevalent chronic health condition in this population. In addition to posing a substantial burden to disease and negatively impacting quality of life, an emerging literature highlights that HL is associated with unipolar depression including among older adults. This review outlines evidence examining the HL and depression relationship as well as clinical implications for assessment and treatment of comorbid depression and HL. Although prevalence estimates of comorbid depression in HL vary, as many as 1 in 5 experience clinically relevant depression symptoms. Both cross-sectional and longitudinal studies indicate that HL is related to increased unipolar depression symptoms, although the strength of the association varies between studies. A range of methodological variations, such as inclusion age, severity of HL and assessment of depression, likely underpin this heterogeneity. Overall, however, the evidence clearly points to an association of HL with clinically relevant depression symptoms. The association with the diagnosis of major depression disorder remains less clear and under-researched. HL is also associated with a range of other poor mental health outcomes in older adults, including anxiety and suicidal ideation, and predicts poorer cognitive functioning. Accordingly, assessment and treatment of comorbid depression in HL is pertinent to promote mental well-being among older adults. Currently, evidence regarding best practice for treating depression in HL remains scant. Preliminary evidence indicates that audiological rehabilitation, including use of hearing aids, as well as community-based hearing interventions can also improve mental health. Psychological intervention that enhances communication skills and addresses coping strategies might also be beneficial for this population. Additionally, evidence suggests that online interventions are feasible and may circumvent communication difficulties in therapy associated with HL. Due to poor help-seeking among this population, an enhanced focus on specific and targeted assessment and treatment is likely necessary to ensure reduced mental health burden among older adults with HL.

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Restoration of sensory input may improve cognitive and neural function

Cited by 48 publications

References 57 publications

Cortical Neuroplasticity and Cognitive Function in Early-Stage, Mild-Moderate Hearing Loss: Evidence of Neurocognitive Benefit From Hearing Aid Use

Cortical Neuroplasticity and Cognitive Function in Early-Stage, Mild-Moderate Hearing Loss: Evidence of Neurocognitive Benefit From Hearing Aid Use

Characteristics and Health Outcomes Associated With Hearing Loss and Hearing Aid Use Among Older Adults

<p>Depression in elderly patients with hearing loss: current perspectives</p>

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