Reduced visual discrimination in cochlear implant users

Turgeon, Christine; Champoux, François; Leporé, Franco; Ellemberg, Dave

doi:10.1097/wnr.0b013e3283525af4

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…The long standing low auditory inputs in the developmental brain may contribute to decreased cortical thickness of extrastriate visual areas in M–P SNHL. Decreased cortical thickness in M–P SNHL may be associated with visual cognitive impairment in SNHL in a clinical setting (Dye and Hauser, 2014; Turgeon et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Despite advances in screening and cochlear implantation (Monshizadeh et al, 2018), there are still many children with hearing loss that suffer from speech and language problems for a variety of reasons, including delayed diagnosis/intervention, failed follow‐up, sporadic attendance of auditory‐verbal therapy, and decision not to use hearing aids (Lü et al, 2011; Fitzpatrick et al, 2017). Additionally, even after intervention with hearing amplification and cochlear implants, SNHL places children at risk for language delay (Tomblin et al, 2015; Yoshinaga‐Itano et al, 2017), executive functioning deficits (Kronenberger et al, 2014), and visual cognitive impairment (Dye and Hauser, 2014; Turgeon et al, 2012), leading to life‐long consequences for affected children.…”

Section: Introductionmentioning

confidence: 99%

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The left lateral occipital cortex exhibits decreased thickness in children with sensorineural hearing loss

Shiohama

McDavid

Levman

et al. 2019

International Journal of Developmental Neuroscience

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Patients with sensorineural hearing loss (SNHL) tend to show language delay, executive functioning deficits, and visual cognitive impairment, even after intervention with hearing amplification and cochlear implants, which suggest altered brain structures and functions in SNHL patients. In this study, we investigated structural brain MRI in 30 children with SNHL (18 mild to moderate [M‐M] SNHL and 12 moderately severe to profound [M–P] SNHL) by comparing gender‐ and age‐matched normal controls (NC). Region‐based analyses did not show statistically significant differences in volumes of the cerebrum, basal ganglia, cerebellum, and the ventricles between SNHL and NC. On surface‐based analyses, the global and lobar cortical surface area, thickness, and volumes were not statistically significantly different between SNHL and NC participants. Regional surface areas, cortical thicknesses, and cortical volumes were statistically significantly smaller in M–P SNHL compared to NC in the left middle occipital cortex, and left inferior occipital cortex after a correction for multiple comparisons using random field theory (p < 0.02). These regions were identified as areas known to be related to high level visual cognition including the human middle temporal area, lateral occipital area, occipital face area, and V8. The observed regional decreased thickness in M–P SNHL may be associated with dysfunctions of visual cognition in SNHL detectable in a clinical setting.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The left lateral occipital cortex exhibits decreased thickness in children with sensorineural hearing loss

Shiohama

McDavid

Levman

et al. 2019

International Journal of Developmental Neuroscience

View full text Add to dashboard Cite

show abstract

“…Indeed, imaging data suggests that vibrotactile stimuli can activate auditory regions in the deaf (Levänen et al, 1998; Schürmann et al, 2006; Sharma et al, 2007) and cortical over-representation of somatosensory evoked potentials in the left temporal region was found in deaf children using a CI (Charroó-Ruíz et al, 2013). Several data demonstrate that brain reorganization induced by deafness leads to behavioral changes for numerous perceptual tasks (Hanson, 1982; Neville and Lawson, 1987; Loke and Song, 1991; Bavelier et al, 2000, 2001, 2006; Bosworth and Dobkins, 2002; Heming and Brown, 2005; Turgeon et al, 2012), although it is unsure whether behaviorally advantageous (e.g., Bolognini et al, 2012). The effect of cross-modal reorganization raises important questions on the importance of hearing experience in shaping perceptual processing, but also in regards to cochlear implantation.…”

Section: Discussionmentioning

confidence: 99%

Audiotactile interaction can change over time in cochlear implant users

Landry

Guillemot

Champoux

2014

Front. Hum. Neurosci.

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Recent results suggest that audiotactile interactions are disturbed in cochlear implant (CI) users. However, further exploration regarding the factors responsible for such abnormal sensory processing is still required. Considering the temporal nature of a previously used multisensory task, it remains unclear whether any aberrant results were caused by the specificity of the interaction studied or rather if it reflects an overall abnormal interaction. Moreover, although duration of experience with a CI has often been linked with the recovery of auditory functions, its impact on multisensory performance remains uncertain. In the present study, we used the parchment-skin illusion, a robust illustration of sound-biased perception of touch based on changes in auditory frequencies, to investigate the specificities of audiotactile interactions in CI users. Whereas individuals with relatively little experience with the CI performed similarly to the control group, experienced CI users showed a significantly greater illusory percept. The overall results suggest that despite being able to ignore auditory distractors in a temporal audiotactile task, CI users develop to become greatly influenced by auditory input in a spectral audiotactile task. When considered with the existing body of research, these results confirm that normal sensory interaction processing can be compromised in CI users.

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“…Recently Turgeon and colleagues [39] observed that CI compared to NH adults had higher visual discrimination thresholds for spatial frequency discrimination tasks; the stimuli used in their task were similar to those used here to manipulate visual attention. The authors of that study concluded that significant periods of progressive hearing loss experienced from birth or infancy (age at implantation ranged between 8 and 52) likely affected this 'low-level' visual ability, highlighting the complementary role that the auditory and visual systems might play in normal perceptual development.…”

Section: A N U S C R I P Tmentioning

confidence: 80%

Electrophysiological evidence for altered visual, but not auditory, selective attention in adolescent cochlear implant users

Harris

Kamke

2014

International Journal of Pediatric Otorhinolaryngology

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Objective: Selective attention fundamentally alters sensory perception, but little is known about the functioning of attention in individuals who use a cochlear implant. This study aimed to investigate visual and auditory attention in adolescent cochlear implant users.Methods: Event related potentials were used to investigate the influence of attention on visual and auditory evoked potentials in six cochlear implant users and age-matched normally-hearing children. Participants were presented with streams of alternating visual and auditory stimuli in an oddball paradigm: each modality contained frequently presented 'standard' and infrequent 'deviant' stimuli. Across different blocks attention was directed to either the visual or auditory modality.Results: For the visual stimuli attention boosted the early N1 potential, but this effect was larger for cochlear implant users. Attention was also associated with a later P3 component for the visual deviant stimulus, but there was no difference between groups in the later attention effects. For the auditory stimuli, attention was associated with a decrease in N1 latency as well as a robust P3 for the deviant tone. Importantly, there was no difference between groups in these auditory attention effects. Conclusion:The results suggest that basic mechanisms of auditory attention are largely normal in children who are proficient cochlear implant users, but that visual attention may be altered. Ultimately, a better understanding of how selective attention influences sensory perception in cochlear implant users will be important for optimising habilitation strategies.

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Reduced visual discrimination in cochlear implant users

Cited by 6 publications

References 24 publications

The left lateral occipital cortex exhibits decreased thickness in children with sensorineural hearing loss

The left lateral occipital cortex exhibits decreased thickness in children with sensorineural hearing loss

Audiotactile interaction can change over time in cochlear implant users

Electrophysiological evidence for altered visual, but not auditory, selective attention in adolescent cochlear implant users

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