Electrophysiological Evidence for Sentence Comprehension - Wings

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to the different processing of syntactic information in adults and children between 9 and 11. The differences – absence of LAN in case violation, shift in latency for P600 and different (broader) distribution of the late negative wave (N400’) when tense of a sentence is violated – can be explained by inefficient language processing of children when developmental processes are still not finished. Maturational processes consist of modularization that corresponds to the strong dissociation between constituent and operator projection processes. Finally, differences between children with TLD and children with SLI were found. The most prominent difference is a weak electrophysiological effect or absence of difference between experimental conditions and even between experiments. This means, first, that children with SLI at least partly fail to detect grammatical errors and, consequently, achieve sentence comprehension using alternative strategies (perhaps what is usually called ‘agrammatical comprehension’). Second, the differences are explained in terms of impaired, inefficient, limited or slow processing (which is a consequence of slower development), not as a lack of linguistic knowledge. Third, if development is a process that ends in modularization, SLI children definitely lag behind their peers and probably never reach the adult stage developing compensatory strategies instead. It should be noted that electrophysiological research related to language comprehension is relatively new in Croatian and that the data collected for this study is practically the only usable data for the analysis and discussion of sentence comprehension processes. Therefore, a lot of caution is needed when generalizing from, in fact, a very limited 159
corpus of data. Future work should be oriented toward collecting auditory sentence processing data for which a higher degree of precision and better laboratory conditions are needed. As for the future work in SLI, basic auditory processing data is condition sine qua non if electrophysiological methods are to be used as a tool for investigating the causes or background of the language impairments. 160
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University of Zagreb Interdisciplin
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TABLE OF CONTENT 1. Introduction 5
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Electrophysiological results 131 5.
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How people comprehend language is o
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1.1. Sentence comprehension There i
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syntactic structure obtained by the
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this process many other factors pla
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exploring sentence comprehension re
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The major advantage of eye-tracking
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ERP waveform. Components are conven
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earlier syntactic component, early
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enzyme activity, receptors or trans
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the formulation of the models that
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and disposes the wrong one as soon
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not provide such an output. In the
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itself) is called 'pragmatic normal
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grammatical knowledge, resembling p
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components. However, the models tha
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The ‘syntax-first’ model is obv
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in which any information is process
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into brain functions that are not n
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Figure 4. The layered structure of
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Activity verbs, in contrast, refer
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step in Levelt’s model perfectly
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language functioning and (2) scores
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are included, as well (e.g. the Bus
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Binding, to be more precise) to exp
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the changes in language related com
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esearch project, as well. The proje
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2. AIMS AND PROBLEMS 58
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2.2. Sentence Comprehension in Typi
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The hypotheses can be grouped accor
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4. METHODS 64
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On the basis of the test results 6
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data collected within a group of ad
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Figure 10. The presentation of the
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The violation condition consists of
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In Croatian adjectives usually prec
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object). This constitutes the viola
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‘tense’ experiments as well as
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Phonological abilities were tested
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. In addition, Homonyms, synonyms a
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software was used. The caps employe
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5.1. Adults 5.1.1. Behavioral resul
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the processes underlying comprehens
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Table 5. Statistical significance o
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calculated by subtracting the non-c
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assigned when the verb is presented
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Figure 22. Average waveform for Pz
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Table 8 gives the statistical signi
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Figure 26. The LAN effect in the
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Figure 28. P600 effect on the CPz e
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Figure 30. The waveforms at the FCz
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semantics distinction more relative
Page 109 and 110: could, in fact, be the focus of the
Page 111 and 112: Subject: Neuroscan EEG file: adults
Page 113 and 114: Figure 38. The P600 in the ‘tense
Page 115 and 116: Figure 41. Distribution maps in the
Page 117 and 118: The results of the two experiments
Page 119 and 120: Statistical analysis reveals P600 e
Page 121 and 122: Subject: Neuroscan EEG file: chiten
Page 123 and 124: Subject: EEG file: chitensechin2_1s
Page 125 and 126: Subject: Neuroscan EEG file: casech
Page 127 and 128: Figure 55. Difference in latency be
Page 129 and 130: only relatively good instrument for
Page 131 and 132: similar words or pseudo-words. Quic
Page 133 and 134: Subject: Neuroscan EEG file: slicas
Page 135 and 136: Subject: EEG file: slicasechi2_1s.a
Page 137 and 138: Subject: Neuroscan EEG file: sli_te
Page 139 and 140: Table 25. ANOVA results for the fro
Page 141 and 142: Subject: Neuroscan EEG file: casech
Page 143 and 144: Subject: Neuroscan EEG file: chiten
Page 145 and 146: 5.3. General Discussion 5.3.1. Sent
Page 147 and 148: Croatian. In this respect ERP metho
Page 149 and 150: Figure 72. Difference between the e
Page 151 and 152: 5.3.3.. The results in the light of
Page 153 and 154: operator projection of the clause (
Page 155 and 156: Leonard’s words, of ‘low phonet
Page 157 and 158: the ‘case-chi’ experiment and t
Page 159: Six ERP experiments were performed
Page 163 and 164: - Aaronson, D., Scarborough, H.S. (
Page 165 and 166: - Bishop, D. V. M., Frazier-Norbury
Page 167 and 168: - Conti-Ramsden, G., Jones, M. (199
Page 169 and 170: - Frazier, L., & Rayner, K. (1982).
Page 171 and 172: - Hagoort, P., Brown, C., Groothuse
Page 173 and 174: - Jurafsky, D. (2002). Probabilisti
Page 175 and 176: - Kovačević, M., Jelaska, Z., Kuv
Page 177 and 178: - Molfese, D., Molfese, V, Key, A.
Page 179 and 180: typically developing peers. Journal
Page 181 and 182: - Rumelhart, D.E., McClelland, J.L.
Page 183 and 184: - Tallal, P. (1976). Rapid auditory
Page 185 and 186: - Weber, F. M., Friederici, A. D. (
Page 187 and 188: LIST OF FIGURES Figure 1. The proce
Page 189 and 190: Figure 54. Difference between adult
Page 191 and 192: SUMMARY The method of event-related
Page 193 and 194: EXTENDED SUMMARY IN CROATIAN SAŽET
Page 195 and 196: teorija jezične obrade (razumijeva
Page 197 and 198: (kad se događa radnja), taj se val
Page 199 and 200: eferenci. Modularnost se, s druge s
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