Discriminating among different types of verb-complement merge in Brazilian Portuguese: an ERP study of morpho-syntactic sub-processes

França, Aniela Improta; Lemle, Miriam; Mauricio, Cagy; Constant, Pedro; Infantosi, Antonio Fernando Catelli

doi:10.1016/j.jneuroling.2004.02.001

Cited by 6 publications

(8 citation statements)

References 17 publications

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“…Hence, the classic protocol recommends grand averaging the waveforms for all individual subjects as the best practice (2,9). Nevertheless, we noticed striking differences among ERP waveforms stemming from different individuals in the data collected for the França et al (10) study. Based on this observation, in a previous study (11) we proposed an alternative to the standard grand averaging: an automatic ERP latency and amplitude estimator as a tool for helping the treatment of N 400 waveforms per individual, and applied it to the analysis of distinct local verb-complement merge conditions.…”

Section: Introductionmentioning

confidence: 63%

Statistical analysis of event-related potential elicited by verb-complement merge in Brazilian Portuguese

Mauricio

Infantosi

França

et al. 2006

Braz J Med Biol Res

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An interesting fact about language cognition is that stimulation involving incongruence in the merge operation between verb and complement has often been related to a negative event-related potential (ERP) of augmented amplitude and latency of ca. 400 ms -the N 400 . Using an automatic ERP latency and amplitude estimator to facilitate the recognition of waves with a low signal-to-noise ratio, the objective of the present study was to study the N 400 statistically in 24 volunteers. Stimulation consisted of 80 experimental sentences (40 congruous and 40 incongruous), generated in Brazilian Portuguese, involving two distinct local verb-argument combinations (nominal object and pronominal object series). For each volunteer, the EEG was simultaneously acquired at 20 derivations, topographically localized according to the 10-20 International System. A computerized routine for automatic N 400 -peak marking (based on the ascendant zero-cross of the first waveform derivative) was applied to the estimated individual ERP waveform for congruous and incongruous sentences in both series for all ERP topographic derivations. Peak-to-peak N 400 amplitude was significantly augmented (P < 0.05; one-sided Wilcoxon signed-rank test) due to incongruence in derivations F 3 , T 3 , C 3 , C z , T 5 , P 3 , P z , and P 4 for nominal object series and in P 3 , P z and P 4 for pronominal object series. The results also indicated high inter-individual variability in ERP waveforms, suggesting that the usual procedure of grand averaging might not be considered a generally adequate approach. Hence, signal processing statistical techniques should be applied in neurolinguistic ERP studies allowing waveform analysis with low signal-to-noise ratio.

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Section: Introductionmentioning

confidence: 63%

Statistical analysis of event-related potential elicited by verb-complement merge in Brazilian Portuguese

Mauricio

Infantosi

França

et al. 2006

Braz J Med Biol Res

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“…ERPs. Amplitudes maiores são relacionadas a um maior esforço de integração, e o ângulo do pico, quando mais agudo, indica maior rapidez em completar a tarefa de concatenação e transitar (ao longo do curso de descida da onda) para a tarefa seguinte (FRANÇA et al, 2003). Vemos que os alvos das Séries 1 e 2 apresentam picos agudos e os das Séries 3 e 4 têm picos obtusos, como platôs que se arrastam antes da descida, uma configuração de tarefa cognitiva não completada (FRANÇA et al, 2003).…”

Section: Discussionunclassified

Conexões Conceptuais: Um Estudo De Erps Sobre a Inescapável Sintaxe Na Semântica

França¹,

Lemle²,

Cagy³

et al. 2006

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O relacionamento semântico entre duas palavras é muitas vezes definido através da noção de cloze: 1 a probabilidade de co-ocorrência de duas palavras semanticamente relacionadas em um mesmo segmento de discurso. É importante notar que este critério de cloze não é puramente semântico, pois abrange tanto a associação entre duas palavras por pertencimento a um mesmo campo semântico quanto a freqüência de uso conjunto em um mesmo trecho do discurso.A aplicação prática de Cloze tem sido explorada principalmente na área educacional em estudos de capacidade de leitura. Um texto com lacu-

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“…com relação à sintaxe, a neurolinguística vem fornecendo evidências concretas para a proposta de diferentes representações para tipos diferentes de construções, por meio de reações diferenciadas, detectáveis em eletroencefalogramas (Franca, Lemle, cagy et alii, 2004).…”

Section: A Natureza Dos Dadosunclassified

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Discriminating among different types of verb-complement merge in Brazilian Portuguese: an ERP study of morpho-syntactic sub-processes

Cited by 6 publications

References 17 publications

Statistical analysis of event-related potential elicited by verb-complement merge in Brazilian Portuguese

Statistical analysis of event-related potential elicited by verb-complement merge in Brazilian Portuguese

Conexões Conceptuais: Um Estudo De Erps Sobre a Inescapável Sintaxe Na Semântica

Memórias De Uma Aprendiz Ingênua

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