Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Correlation between rCBF and speech perception in cochlear implant users.

N Fujiki1, Y Naito, S Hirano

  • 1Department of Hearing and Speech Science, Kyoto University Graduate School of Medicine, Japan. fujiki@ent.kuhp.kyoto-u.ac.jp

Auris, Nasus, Larynx
|July 27, 1999
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Brain tumors in surgical neuropathology of intractable epilepsies, with special reference to cerebral dysplasias.

Brain tumor pathology·1999
Same author

Anaplastic large-cell lymphoma of null-cell type with multiple bone involvement.

Annals of hematology·1999
Same author

Influence of speech-coding strategy on cortical activity in cochlear implant users: a positron emission tomographic study.

Acta oto-laryngologica·1998
Same author

Differential induction by methyl jasmonate of genes encoding ornithine decarboxylase and other enzymes involved in nicotine biosynthesis in tobacco cell cultures.

Plant molecular biology·1998
Same author

Increased intestinal glucose absorption and postprandial hyperglycaemia at the early step of glucose intolerance in Otsuka Long-Evans Tokushima Fatty rats.

Diabetologia·1998
Same author

Direct evidence of NO production in rat hippocampus and cortex using a new fluorescent indicator: DAF-2 DA.

Neuroreport·1998

Cochlear implant (CI) users show varied speech perception. Brain activity in auditory association areas, particularly the left hemisphere, positively correlates with better speech processing, suggesting neural plasticity.

Area of Science:

  • Neuroscience
  • Audiology
  • Medical Imaging

Background:

  • Cochlear implants (CIs) enable hearing for deaf individuals, but speech perception varies significantly among users.
  • Understanding the brain mechanisms underlying speech processing in CI users is crucial for improving outcomes.

Purpose of the Study:

  • To investigate the relationship between brain activity and speech perception performance in postlingually deaf cochlear implant users.
  • To identify specific cortical regions involved in processing speech signals delivered by CIs.

Main Methods:

  • PET scans measured regional cerebral blood flow (rCBF) in 14 CI users during speech and no-sound stimulation.
  • Speech perception was assessed using vowel, consonant, and speech-tracking tests in Japanese.
  • Correlations between rCBF changes in auditory regions (primary auditory, auditory association, Broca's areas) and speech perception were analyzed.

Related Experiment Videos

Main Results:

  • Speech perception abilities varied widely among participants.
  • Positive correlations were found between rCBF in auditory association areas and speech perception performance.
  • These correlations were stronger in the left auditory association area for vowel, consonant, and speech-tracking tasks.
  • A positive correlation was also observed in the right auditory association area for consonant perception.

Conclusions:

  • Improved speech processing in CI users with the SPEAK strategy is associated with increased neural activity in auditory association areas.
  • These findings suggest that adult auditory cortices retain plasticity, enabling adaptation to CI-mediated speech signals.