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CoDAS

On-line version ISSN 2317-1782

Abstract

RECHIA, Inaê Costa et al. Auditory maturation and psychological risk in the first year of life. CoDAS [online]. 2018, vol.30, n.4, e20170142.  Epub July 19, 2018. ISSN 2317-1782.  https://doi.org/10.1590/2317-1782/20182017142.

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.

Keywords : Auditory Perception; Child; Risk Indicators; Evoked Potentials; Maturation.

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