The effect of eye disease, cataract surgery and hearing aid use on multisensory integration in ageing

Hirst, Rebecca J.; Setti, Annalisa; Looze, Céline De; Akuffo, Kwadwo Owusu; Kenny, Rose Anne; Newell, Fiona N.

doi:10.1016/j.cortex.2020.08.030

Cited by 14 publications

(9 citation statements)

References 58 publications

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“…The impact of age-related sensory impairment upon multisensory perception has been explored in Ireland in the context of TILDA. It is evident that clinical interventions to improve sensory function in the ageing population (bilateral cataract removal and hearing aid use) are beneficial [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Outcomes from 7 years of a direct to audiology referral pathway

et al. 2022

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Background The direct to audiology via ENT referral pathway was designed to enhance patient access to audiology services. The pathway is recommended in the Otolaryngology Head & Neck Surgery: a model of care for Ireland report, published in 2019. Aims This study aimed to review the outcomes of all patients that attended our institution over the last seven years. Methods A retrospective review of the direct to audiology referral service from March 2014 to December 2021 was conducted. Outcomes were defined by the pathway each patient took following attendance at the audiology clinic. Patients were either (i) discharged, (ii) referred for hearing aid(s) or (iii) identified as candidates for further diagnostic assessments, including a follow-up at the ENT outpatient clinic. Results During the time frame, 419 patients were triaged to the pathway. The average wait time was 13 days. The average age was 53 years (range 16–96 years, SD = 6.1). Approximately 34% ( n = 143) of all patients referred were discharged back to the GP by the audiologist, but 66% ( n = 276) presented with ‘red flags’ and needed further investigation in the ENT clinic, with 30% ( n = 73) ultimately requiring imaging studies. Over half ( n = 254, 61%) were referred for hearing aids. Conclusion The direct to audiology initiative has proven effective at reducing waiting times for ENT patients solely in need of audiological intervention. Approximately one-third of these referrals to the ENT service can be assessed comprehensively in the audiology clinic, thereby reducing the demand for ENT clinics, enhancing service provision and expediting onwards referral for amplification.

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Section: Introductionmentioning

confidence: 99%

Outcomes from 7 years of a direct to audiology referral pathway

et al. 2022

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“…Hirst et al, (2007) found that when older and younger adults had no difference in behavioral responses to a unisensory stimulus, the older adults’ audiovisual integration was still greater than younger adults, indicating that the compensation mechanism mentioned above could not fully explain the phenomenon [ 25 ]. Not only that, Using The Irish Longitudinal Study of Ageing data, Hirst et al, (2020) found that the visual gain of older adults with eye diseases did not differ from that of controls, and that the angular gyrus, rather than the primary sensory cortex, which is associated with higher cognitive functions, played an important role in age-related SiFI [ 33 , 34 ]. Therefore, we thought enhanced multisensory illusion did not always result from compensation for unisensory ability.…”

Section: Introductionmentioning

confidence: 99%

Compensation Mechanisms May Not Always Account for Enhanced Multisensory Illusion in Older Adults: Evidence from Sound-Induced Flash Illusion

Heng

Liu

et al. 2022

Brain Sciences

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Sound-induced flash illusion (SiFI) is typical auditory dominance phenomenon in multisensory illusion. Although a number of studies have explored the SiFI in terms of age-related effects, the reasons for the enhanced SiFI in older adults are still controversial. In the present study, older and younger adults with equal visual discrimination were selected to explore age differences in SiFI effects, and to explore the neural indicators by resting-state functional magnetic resonance imaging (rs-fMRI) signals. A correlation analysis was calculated to examine the relationship between regional homogeneity (ReHo) and the SiFI. The results showed that both younger and older adults experienced significant fission and fusion illusions, and fission illusions of older adults were greater than that of younger adults. In addition, our results showed ReHo values of the left middle frontal gyrus (MFG), the right inferior frontal gyrus (IFG) and right superior frontal gyrus (SFG) were significantly positively correlated with the SiFI in older adults. More importantly, the comparison between older and younger adults showed that ReHo values of the right superior temporal gyrus (STG) decreased in older adults, and this was independent of the SiFI. The results indicated that when there was no difference in unisensory ability, the enhancement of multisensory illusion in older adults may not always be explained by compensation mechanisms.

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“…For instance, schizophrenia patients have reduced MSI linked to impaired ability to filter redundant sensory information, auditory and/or visual hallucinations 16,17 . Individuals with hearing and vision loss 9,[18][19][20] show reduced audio-visual integration related to reorganization of visual cortical areas and inadequate visual processing. Finally, eating disorders (e.g., anorexia nervosa (AN 21,22 )) and autism spectrum disorder (ASD) [23][24][25] are also associated with altered MSI and asymmetric interhemispheric theta power with lower power in the right centro-parietal areas, and impaired temporal processing, respectively.Although deficits in MSI have been documented across a number of disorders 9,16,[18][19][20]22,24,26 , the influence of SCI on MSI remains incompletely known.…”

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confidence: 99%

“…Individuals with hearing and vision loss 9,[18][19][20] show reduced audio-visual integration related to reorganization of visual cortical areas and inadequate visual processing. Finally, eating disorders (e.g., anorexia nervosa (AN 21,22 )) and autism spectrum disorder (ASD) [23][24][25] are also associated with altered MSI and asymmetric interhemispheric theta power with lower power in the right centro-parietal areas, and impaired temporal processing, respectively.Although deficits in MSI have been documented across a number of disorders 9,16,[18][19][20]22,24,26 , the influence of SCI on MSI remains incompletely known. Both anatomical 27,28 and functional [28][29][30][31] changes in primary motor and somatosensory cortices have been observed in individuals with SCI.…”

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confidence: 99%

Multisensory integration in humans with spinal cord injury

Vastano

Costantini

Alexander

et al. 2022

Sci Rep

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Although multisensory integration (MSI) has been extensively studied, the underlying mechanisms remain a topic of ongoing debate. Here we investigate these mechanisms by comparing MSI in healthy controls to a clinical population with spinal cord injury (SCI). Deafferentation following SCI induces sensorimotor impairment, which may alter the ability to synthesize cross-modal information. We applied mathematical and computational modeling to reaction time data recorded in response to temporally congruent cross-modal stimuli. We found that MSI in both SCI and healthy controls is best explained by cross-modal perceptual competition, highlighting a common competition mechanism. Relative to controls, MSI impairments in SCI participants were better explained by reduced stimulus salience leading to increased cross-modal competition. By combining traditional analyses with model-based approaches, we examine how MSI is realized during normal function, and how it is compromised in a clinical population. Our findings support future investigations identifying and rehabilitating MSI deficits in clinical disorders.

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The effect of eye disease, cataract surgery and hearing aid use on multisensory integration in ageing

Cited by 14 publications

References 58 publications

Outcomes from 7 years of a direct to audiology referral pathway

Outcomes from 7 years of a direct to audiology referral pathway

Compensation Mechanisms May Not Always Account for Enhanced Multisensory Illusion in Older Adults: Evidence from Sound-Induced Flash Illusion

Multisensory integration in humans with spinal cord injury

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