Follow up of P1 peak amplitude and peak latency in a group of specific language-impaired children

Maturação dos potenciais evocados auditivos de longa latência em crianças ouvintes: análise do complexo P1-N1-P2-N2

“…The latency of this component was of approximately 174 ms in children with an age range between seven and 18 months and of approximately 134 ms in children with an age between 24 and 66 months (17) . Such values, are similar to latency values for the component P1 observed both in the present study, as well as reported by other authors who evaluated children in a similar age range (10,18,22,23) . It is important to highlight that such findings can be derived by the different collection procedures utilized to record LLAEP values, considering that the components P1, N1, P2 and N2 are exogenous potentials and therefore, can suffer modifications according to the characteristics of the stimulus.…”

“…Studies report that around only 41% of variability in latency values can be explained by maturation through the passage of chronological age. The other values correspond to other variables such as gender and individual cognitive abilities (10) . Considering the difficulty of realizing this procedure on small children, there is still little that can be concluded in terms of the maturation of these potentials in hearing children younger than six years of age, observing a divergence in the findings in the literature.…”

Effects of Recurrent Acute Otitis Media on Cortical Speech-Sound Processing in 2-Year Old Children

“…Some studies have shown atypical auditory P1 response in children with developmental language problems (Gilley et al 2006) or auditory P1 to correlate with language development (Mikkola et al 2007). However, normal auditory P1 amplitudes and latencies in children with language disorder have been reported (Korpilahti & Lang 1994;Kabel et al 2009). Wagner et al (2013) also suggested that there were no differences between the obligatory auditory ERPs elicited by non-native and native language syllable stimuli.…”

Maturação dos potenciais evocados auditivos de longa latência em crianças ouvintes: revisão sistemática

“…It has been found in the literature that the P1 component latency has a strong relation with age, decreasing about 1.6 ms per year (12) , which is not equal to the adult until the 15 years of age (9) and, besides that, the reduction in latency values of this component can be observed until around 20 years of age (14) . The chronological age is able to explain approximately 41% of the variance in the latency values; In the others, variations may be related to other issues, such as gender and each individual intelligence coefficient (26) . Regard the N1 component, the age expected to be visualized in the LLAEP traces (29) is not known with precision yet.…”