Plastic changes during deafness can either help or hinder adaptation to a cochlear implant

Evidence

In summary, functional changes that occur during deafness can both enhance and degrade the ability to adapt to CI listening, perhaps depending on the communication strategy each person used while deaf. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274 (#corroborates, via linked claim)

Lee et al. ( 2003 ) used positron emission tomography (PET) to compare resting-state activity in 9 profoundly deaf individuals and 9 age-matched normal-hearing controls. They found that glucose metabolism in some auditory areas was lower than in normally-hearing people, but significantly increased with duration of deafness, and concluded that plasticity occurs in the sensory-deprived mature brain. Later, they showed that children with good speech understanding 3 years after implantation had enhanced metabolic activity in the left prefrontal cortex and decreased metabolic activity in right Heschl’s gyrus and in the posterior superior temporal sulcus before implantation compared to those with poor speech understanding (Lee et al. 2007 ). They argued that increased activity in the resting state in auditory areas may reflect cross modal plasticity that is detrimental to later success with the cochlear implant (CI). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274 (#exemplifies, via linked claim)

Categorization

• XREF: connects to: Late-life cochlear implants can succeed even in people deaf from birth — Eric J. Heller, Why You Hear What You Hear- An…, 1968; Cochlear implant candidacy requires profound hearing loss since surgery destroys residual hearing; Cross-modal brain plasticity from deafness variably helps or harms cochlear implant outcomes — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274 (+1 more)

Related

• Resting brain activity during deafness predicts later success with a cochlear implant (similarity 0.93)
• Cross-modal brain plasticity from deafness variably helps or harms cochlear implant outcomes (similarity 0.91)
• Auditory cortex in deaf brains gets recruited by visual stimuli, harming later implant success. (similarity 0.88)
• Resting-state brain activity reflects predictive tracking and neural plasticity (similarity 0.88)
• Late-life cochlear implants can succeed even in people deaf from birth (similarity 0.87)
• Neural degeneration alone does not explain polarity sensitivity differences in cochlear implants (similarity 0.83)
• Cochlear implant users show weaker inter-hemispheric resting connectivity than normal-hearing listeners (similarity 0.83)
• Adult cochlear implant success depends on prior experience with sound (similarity 0.82)
• Resting-state connectivity reflects neural plasticity from deafness and reorganisation (similarity 0.82)
• Cochlear implant input-output responses can reverse polarity preference at high levels (similarity 0.81)
• Neural degeneration cannot explain why anodic stimulation suits humans but cathodic suits animals (similarity 0.80)
• Deafness lowers then slowly raises auditory cortex metabolism with duration (similarity 0.79)
• fNIRS could predict cochlear implant outcomes before surgery because it is non-invasive and low-cost (similarity 0.79)
• Cochlear implant electrode deactivation produces inconclusive and strategy-dependent results (similarity 0.79)
• Visual-cortex contribution to speech grows over time in implant users (similarity 0.79)

Broader Connections

• Cross-modal brain plasticity from deafness variably helps or harms cochlear implant outcomes #corroborates (1.00) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274
• Resting brain activity during deafness predicts later success with a cochlear implant #exemplifies (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274