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Published on: October 8, 2014
Auditory maturation and psychological risk in the first year of life
Inaê Costa Rechia1, Isabela de Moraes Fattore1, Anaelena Bragança de Moraes1
1Departamento de Fonoaudiologia, Universidade Federal de Santa Maria - UFSM - Santa Maria (RS), Brasil.
Insights
Limited auditory pathway maturation in infants is linked to increased psychological risk. Early mother-infant relationship issues can negatively impact hearing development and auditory stimulation.
Area of Science:
- Neuroscience
- Developmental Psychology
- Audiology
Background:
- Auditory pathway maturation is crucial for infant development.
- Psychological risk factors can impact various developmental trajectories.
- Understanding the interplay between auditory development and psychological well-being is essential.
Purpose of the Study:
- To investigate the association between psychological risk and auditory pathway maturation in infants.
- To determine if delayed auditory maturation predicts psychological risk in early childhood.
Main Methods:
- A longitudinal cohort study followed 54 infants (at-risk and non-risk) from 1 to 12 months.
- Cortical auditory evoked potentials (CAEPs) assessed auditory maturation.
- Psychological risk was measured using Child Development Risk Indicators (CDRIs) and PREAUT signs.
Main Results:
- While overall maturation occurred in both groups, significant differences in N1 latency and amplitude were noted at 1 month.
- Moderate correlations were found between P1/N1 latencies and psychological risk indicators (CDRIs) at various time points (1, 6, and 12 months).
- Longer auditory latencies at 12 months correlated with a higher likelihood of exhibiting absence of Phase II CDRIs, indicating greater psychological risk.
Conclusions:
- Delayed auditory pathway maturation is associated with the presence of psychological risk in infants.
- Adverse mother-infant relationship dynamics in the first six months can detrimentally affect hearing development.
- Fragile early relationships may lead to reduced auditory and linguistic stimulation, impacting auditory maturation.
Purpose:
To assess the potential association between psychological risk and limited auditory pathway maturation.
Methods:
In this longitudinal cohort study, 54 infants (31 non-risk and 23 at-risk) were assessed from age 1 to 12 months. All had normal hearing and underwent assessment of auditory maturation through cortical auditory evoked potentials testing. Psychological risk was assessed with the Child Development Risk Indicators (CDRIs) and PREAUT signs. A variety of statistical methods were used for analysis of results.
Results:
Analysis of P1 and N1 latencies showed that responses were similar in the both groups. Statistically significant differences between-groups were observed only for the variables N1 latency and amplitude at 1 month. Significant maturation occurred in both groups (p<0.05). There was moderate correlation between P1 latency and Phase II CDRIs, which demonstrates that children with longer latencies at age 12 months were more likely to exhibit absence of these indicators in Phase II and, therefore, were at greater psychological risk. The Phase II CDRIs also correlated moderately with P1 and N1 latencies at 6 months and N1 latencies at 1 month; again, children with longer latency were at increased risk.
Conclusion:
Less auditory pathway maturation correlated with presence of psychological risk. Problems in the mother-infant relationship during the first 6 months of life are detrimental not only to cognitive development, but also to hearing. A fragile relationship may reflect decreased auditory and linguistic stimulation.
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