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Brain Lang ; 119(3): 175-83, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21798588

RESUMO

This study presents evidence suggesting that electrophysiological responses to language-related auditory stimuli recorded at 46weeks postconceptional age (PCA) are associated with language development, particularly in infants with periventricular leukomalacia (PVL). In order to investigate this hypothesis, electrophysiological responses to a set of auditory stimuli consisting of series of syllables and tones were recorded from a population of infants with PVL at 46weeks PCA. A communicative development inventory (i.e., parent report) was applied to this population during a follow-up study performed at 14months of age. The results of this later test were analyzed with a statistical clustering procedure, which resulted in two well-defined groups identified as the high-score (HS) and low-score (LS) groups. The event-induced power of the EEG data recorded at 46weeks PCA was analyzed using a dimensionality reduction approach, resulting in a new set of descriptive variables. The LS and HS groups formed well-separated clusters in the space spanned by these descriptive variables, which can therefore be used to predict whether a new subject will belong to either of these groups. A predictive classification rate of 80% was obtained by using a linear classifier that was trained with a leave-one-out cross-validation technique.


Assuntos
Diagnóstico Precoce , Eletroencefalografia/métodos , Transtornos do Desenvolvimento da Linguagem/diagnóstico , Leucomalácia Periventricular/diagnóstico , Percepção Auditiva , Feminino , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Desenvolvimento da Linguagem , Transtornos do Desenvolvimento da Linguagem/etiologia , Transtornos do Desenvolvimento da Linguagem/fisiopatologia , Leucomalácia Periventricular/complicações , Leucomalácia Periventricular/fisiopatologia , Masculino
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