Resting brain activity during deafness predicts later success with a cochlear implant

Evidence

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

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…, 4275

Categorization

• XREF: Pre-implant cortical state predicting implant outcomes connects to the reader’s broader noise/silence library theme of perceptual systems being shaped before an intervention. — connects to: Task-subtraction fMRI paradigms cancel out tinnitus-related brain activity — Dijk, Pim van, Physiology, Psychoacoustics and…, 2747; Cross-modal brain plasticity from deafness variably helps or harms cochlear implant outcomes — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274; Resting-state connectivity reflects neural plasticity from deafness and reorganisation — Dijk, Pim van, Physiology, Psychoacoustics and…, 4273 (+4 more)
• corroborated: 3 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274; Dijk, Pim van, Physiology, Psychoacoustics and…, 4275

Broader Connections

• Cross-modal brain plasticity from deafness variably helps or harms cochlear implant outcomes #expands (0.92) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4274
• Resting-state connectivity reflects neural plasticity from deafness and reorganisation #corroborates (0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4273
• Cochlear implant users show weaker inter-hemispheric resting connectivity than normal-hearing listeners #expands (0.75) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4305