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Frequency-Following Response in Infants With Congenital Syphilis.

Sheila Andreoli Balen1,2,3, Carolina Karla de Souza Evangelista1,2,4, Teresa Ribas-Prats5,6,7

  • 1Undergraduate Program in Speech, Language and Hearing Sciences, Federal University of Rio Grande do Norte, Natal, Brazil.

Journal of Speech, Language, and Hearing Research : JSLHR
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Summary
This summary is machine-generated.

Infants treated for congenital syphilis show normal auditory processing. This study found preserved frequency-following response (FFR) in treated infants, crucial for language development.

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Area of Science:

  • Neuroscience
  • Pediatrics
  • Audiology

Background:

  • Congenital syphilis can impact infant neurodevelopment.
  • Early treatment is crucial for mitigating long-term effects.
  • Auditory pathway function is vital for language acquisition.

Purpose of the Study:

  • To investigate the frequency-following response (FFR) in infants with congenital syphilis undergoing treatment.
  • To compare auditory processing in treated infants with congenital syphilis to a control group.
  • To assess the impact of congenital syphilis treatment on auditory pathway function relevant to language development.

Main Methods:

  • Cross-sectional study of 90 infants (15-90 days old).
  • Two groups: 53 treated for congenital syphilis, 37 controls.
  • Recorded auditory frequency-following responses (FFRs) to a /da/ stimulus; analyzed in time and frequency domains.

Main Results:

  • No significant differences in FFR spectral amplitude between treated and control infants.
  • No significant differences in prestimulus root-mean-square, neural lag, or signal-to-noise ratio.
  • Auditory pathway function appears preserved in infants treated for congenital syphilis.

Conclusions:

  • Appropriate perinatal treatment for congenital syphilis preserves auditory pathway function in infants.
  • Sound processing, including temporal and spectral characteristics, is maintained.
  • These preserved functions are important for subsequent language acquisition.