Effect of congenital toxoplasmosis on the encoding of speech in infants

Ferreira, Laís; Valadão, Maria Clara da Silva; Skarżyński, Henryk; Sanfins, Milaine Dominici; Biaggio, Eliara Pinto Vieira

doi:10.1016/j.ijporl.2019.109767

Cited by 6 publications

(29 citation statements)

References 22 publications

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“…When considering the development of the auditory-linguistic system of an infant with CT, studies have revealed a higher risk to have an altered brainstem auditory potential 17 , higher latency and differences in the auditory nervous system to encoding of speech 16 and language delays 10 , when compared to typical children. Although sensorineural hearing loss has a rare occurrence in treated children 9 , it is recommended that these children have a follow-up audiometric evaluation at least until 24 to 30 months of age 6 .…”

Section: Discussionmentioning

confidence: 99%

“…In this group, 27.4% presented central hearing dysfunction and 26.4% presented a language delay followed up 12 months of age 10 . Ferreira et al observed higher latency in cortical responses to speech in CT children 16 . Children with CT have five times more risk to have an abnormality in brainstem auditory evoked potential and a higher latency of wave V 17 .…”

Section: Introductionmentioning

confidence: 93%

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Hearing brain evaluated using near-infrared spectroscopy in congenital toxoplasmosis

Bertachini

Januário

Novi

et al. 2021

Sci Rep

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Congenital toxoplasmosis (CT) is a known cause of hearing loss directly caused by Toxoplasma gondii. Hearing loss might result from sensory, neural, or sensorineural lesions. Early treated infants rarely develop hearing loss, but retinochoroidal lesions, intracranial calcifications and hydrocephalus are common. In this study, we aimed to evaluate the brain evoked hemodynamic responses of CT and healthy infants during four auditory stimuli: mother infant directed speech, researcher infant directed speech, mother reading and researcher recorded. Children underwent Transitionally Evoked Otoacoustic Emission Auditory Testing and Automated Brainstem Auditory Response tests with normal auditory results, but with a tendency for greater latencies in the CT group compared to the control group. We assessed brain hemodynamics with functional near-infrared spectroscopy (fNIRS) measurements from 61 infants, and we present fNIRS results as frequency maps of activation and deactivation for each stimulus. By evaluating infants in the three first months of life, we observed an individual heterogeneous brain activation pattern in response to all auditory stimuli for both groups. Each channel was activated or deactivated in less than 30% of children for all stimuli. There is a need of prospective studies to evaluate if the neurologic or auditory changes course with compromise of children outcomes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Hearing brain evaluated using near-infrared spectroscopy in congenital toxoplasmosis

Bertachini

Januário

Novi

et al. 2021

Sci Rep

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“…Included studies were cohort (Jeng, Lin, Chou, et al, 2016;Musacchia et al, 2018Musacchia et al, , 2019Skoe et al, 2015) and crosssectional (Anderson et al, 2015;Ayas et al, 2015;Ferreira et al, 2020;Jeng et al, 2010Jeng et al, , 2011Jeng et al, , 2013Jeng et al, , 2018Pinto & Martinelli, 2018;Ribas-Prats et al, 2019;Van Dyke et al, 2017). Among the included studies, all published between 2010 (Jeng et al, 2010) and 2020 (Ferreira et al, 2020), the majority were originated in the United States (Anderson et al, 2015;Jeng et al, 2010Jeng et al, , 2018Musacchia et al, 2018Musacchia et al, , 2019Skoe et al, 2015;Van Dyke et al, 2017) and China in multicenter collaboration (Jeng et al, 2011(Jeng et al, , 2013Jeng, Lin, Chou, et al, 2016; and some of the studies were also carried out in countries such as Brazil (Ferreira et al, 2020;Pinto & Martinelli, 2018), Spain (Ribas-Prats et al, 2019), and India (Ayas et al, 2015). The year with more publications was 2015 (Anderson et al, 2015;Ayas et al, 2015;Skoe et al, 2015).…”

Section: Study Characteristicsmentioning

confidence: 99%

“…All studies were able to record FFR in children and showed the feasibility of applying this test for the age group 0-24 months (Anderson et al, 2015;Ayas et al, 2015;Ferreira et al, 2020;Jeng et al, 2010Jeng et al, , 2011Jeng et al, , 2013Jeng et al, , 2018Jeng, Lin, Chou, et al, 2016; Pinto & Martinelli, 2018;Ribas-Prats et al, 2019;Skoe et al, 2015;Van Dyke et al, 2017). Of the 15 studies, only one assessed children over 1 year of age and showed that 2-year-old children are less vulnerable to the disruptive effects of background noise than children under 1 year of age (Musacchia et al, 2018).…”

Section: Study Characteristicsmentioning

confidence: 99%

“…One study was dedicated to collecting normative data, managing to store data from a large sample of 46 newborns (Ribas-Prats et al, 2019), and one study was dedicated to testing a tool for the automatic detection of FFR in newborns, having obtained positive results (Jeng et al, 2013). Three studies evaluated FFR as a tool to monitor children with associated pathologies such as toxoplasmosis (Ferreira et al, 2020) or hyperbilirubinemia (Ayas et al, 2015;Musacchia et al, 2019), showing the viability of this assessment. Seven studies investigated the relationship of the FFR with the individuals' age and development and showed that FFR is influenced by these factors (Anderson et al, 2015;Jeng et al, 2010, Table 2.…”

Section: Study Characteristicsmentioning

confidence: 99%

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Frequency-Following Response in Newborns and Infants: A Systematic Review of Acquisition Parameters

Lemos

Nunes

Evangelista

et al. 2021

J Speech Lang Hear Res

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Purpose The purpose of this study is to characterize parameters used for frequency-following response (FFR) acquisition in children up to 24 months of age through a systematic review. Method The study was registered in PROSPERO and followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses' recommendations. Search was performed in six databases (LILACS, LIVIVO, PsycINFO, PubMed, Scopus, and Web of Science) and gray literature (Google Scholar, OpenGrey, ProQuest)as well as via manual searches in bibliographic references. Observational studies using speech stimuli to elicit the FFR in infants with normal hearing on the age range from 0 until 24 months were included. No restrictions regarding language and year of publication were applied. Risk of bias was assessed with the Joanna Briggs Institute Critical Appraisal Checklist. Data on stimulus, presentation rate, time window for analysis, number of sweeps, artifact rejection, online filters, stimulated ear, and examination condition were extracted. Results Four hundred fifty-nine studies were identified. After removing duplicates and reading titles and abstracts, 15 articles were included. Seven studies were classified as low risk of bias, seven as moderate risk, and one as high risk. Conclusions There is a consensus in the use of some acquisition parameters of the FFR with speech stimulus, such as the vertical mounting, the use of alternating polarity, a sampling rate of 20000 Hz, and the /da/ synthesized syllable of 40 ms in duration as the preferred stimulus. Although these parameters show some consensus, the results disclosed lack of a single established protocol for FFR acquisition with speech stimulus in infants in the investigated age range.

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Developmental Trajectory of the Frequency-Following Response During the First 6 Months of Life

Ribas-Prats,

Cordero,

Lip-Sosa

et al. 2023

J Speech Lang Hear Res

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Purpose: The aim of the present study is to characterize the maturational changes during the first 6 months of life in the neural encoding of two speech sound features relevant for early language acquisition: the stimulus fundamental frequency ( f o ), related to stimulus pitch, and the vowel formant composition, particularly F 1 . The frequency-following response (FFR) was used as a snapshot into the neural encoding of these two stimulus attributes. Method: FFRs to a consonant–vowel stimulus /da/ were retrieved from electroencephalographic recordings in a sample of 80 healthy infants (45 at birth and 35 at the age of 1 month). Thirty-two infants (16 recorded at birth and 16 recorded at 1 month) returned for a second recording at 6 months of age. Results: Stimulus f o and F 1 encoding showed improvements from birth to 6 months of age. Most remarkably, a significant improvement in the F 1 neural encoding was observed during the first month of life. Conclusion: Our results highlight the rapid and sustained maturation of the basic neural machinery necessary for the phoneme discrimination ability during the first 6 months of age.

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Effect of congenital toxoplasmosis on the encoding of speech in infants

Cited by 6 publications

References 22 publications

Hearing brain evaluated using near-infrared spectroscopy in congenital toxoplasmosis

Hearing brain evaluated using near-infrared spectroscopy in congenital toxoplasmosis

Frequency-Following Response in Newborns and Infants: A Systematic Review of Acquisition Parameters

Developmental Trajectory of the Frequency-Following Response During the First 6 Months of Life

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