			Home About us Contact

Sentence Comprehension (sentence + comprehension)

Distribution by Scientific Domains

Humanities and Social Sciences	33%

Selected Abstracts

Functional Neuroimaging Studies of Syntactic Processing in Sentence Comprehension: A Critical Selective Review

LINGUISTICS & LANGUAGE COMPASS (ELECTRONIC), Issue 1-2 2007
David Caplan
This article critically reviews recent papers that use functional neuroimaging to localize syntactic representations, Universal Grammar, parsing operations, and the working memory system that supports parsing. It is concluded that greater control over experimental conditions is needed for studies to provide convincing evidence about the neural basis for these cognitive functions. [source]

Volitional control of attention and brain activation in dual task performance

HUMAN BRAIN MAPPING, Issue 2 2007
Sharlene D. Newman
Abstract This study used functional MRI (fMRI) to examine the neural effects of willfully allocating one's attention to one of two ongoing tasks. In a dual task paradigm, participants were instructed to focus either on auditory sentence comprehension, mental rotation, or both. One of the major findings is that the distribution of brain activation was amenable to strategic control, such that the amount of activation per task was systematically related to the attention-dividing instructions. The activation in language processing regions was lower when attending to mental rotation than when attending to the sentences, and the activation in visuospatial processing regions was lower when attending to sentences than when attending to mental rotations. Additionally, the activation was found to be underadditive, with the dual-task condition eliciting less activation than the sum of the attend sentence and attend rotation conditions. We also observed a laterality shift across conditions within language-processing regions, with the attend sentence condition showing bilateral activation, while the dual task condition showed a left hemispheric dominance. This shift suggests multiple language-processing modes and may explain the underadditivity in activation observed in the current and previous studies. Hum. Brain Mapp, 2007. © 2006 Wiley-Liss, Inc. [source]

Neural basis for sentence comprehension: Grammatical and short-term memory components

HUMAN BRAIN MAPPING, Issue 2 2002
Ayanna Cooke
Abstract We monitored regional cerebral activity with BOLD fMRI while subjects were presented written sentences differing in their grammatical structure (subject-relative or object-relative center-embedded clauses) and their short-term memory demands (short or long antecedent-gap linkages). A core region of left posterior superior temporal cortex was recruited during all sentence conditions in comparison to a pseudofont baseline, suggesting that this area plays a central role in sustaining comprehension that is common to all sentences. Right posterior superior temporal cortex was recruited during sentences with long compared to short antecedent-gap linkages regardless of grammatical structure, suggesting that this brain region supports passive short-term memory during sentence comprehension. Recruitment of left inferior frontal cortex was most clearly associated with sentences that featured both an object-relative clause and a long antecedent-gap linkage, suggesting that this region supports the cognitive resources required to maintain long-distance syntactic dependencies during the comprehension of grammatically complex sentences. Hum. Brain Mapping 15:80,94, 2001. © 2001 Wiley-Liss, Inc. [source]

Suppressing Inner Speech in ESL Reading: Implications for Developmental Changes in Second Language Word Recognition Processes

MODERN LANGUAGE JOURNAL, Issue 4 2009
SHIGEO KATO
The effect of articulatory suppression on second language (L2) visual sentence comprehension and its relation to L2 reading proficiency and lower level processing efficiency were investigated in a series of experiments using 64 college-level Japanese English as a second language learners as participants. The results supported the hypothesis that increased reading proficiency requires developmental changes in lower level skills; namely a greater degree of L2 reading proficiency requires greater orthographic processing skills. This is especially pronounced for the groups comprising proficient and less proficient readers. With regard to proficient readers, there were significant intercorrelations among sentence processing performance under suppression, reading comprehension score, and orthographic skills; however, none of these relationships were significant with less proficient readers. In contrast, phonological processing continued to make a significant contribution with proficient readers under suppression. This confounding outcome implies that a simple choice between phonological and direct-visual coding strategies does not fully explain the L2 reading process under articulatory suppression. [source]

An Activation-Based Model of Sentence Processing as Skilled Memory Retrieval

COGNITIVE SCIENCE - A MULTIDISCIPLINARY JOURNAL, Issue 3 2005
Richard L. Lewis
Abstract We present a detailed process theory of the moment-by-moment working-memory retrievals and associated control structure that subserve sentence comprehension. The theory is derived from the application of independently motivated principles of memory and cognitive skill to the specialized task of sentence parsing. The resulting theory construes sentence processing as a series of skilled associative memory retrievals modulated by similarity-based interference and fluctuating activation. The cognitive principles are formalized in computational form in the Adaptive Control of Thought,Rational (ACT,R) architecture, and our process model is realized in ACT,R. We present the results of 6 sets of simulations: 5 simulation sets provide quantitative accounts of the effects of length and structural interference on both unambiguous and garden-path structures. A final simulation set provides a graded taxonomy of double center embeddings ranging from relatively easy to extremely difficult. The explanation of center-embedding difficulty is a novel one that derives from the model' complete reliance on discriminating retrieval cues in the absence of an explicit representation of serial order information. All fits were obtained with only 1 free scaling parameter fixed across the simulations; all other parameters were ACT,R defaults. The modeling results support the hypothesis that fluctuating activation and similarity-based interference are the key factors shaping working memory in sentence processing. We contrast the theory and empirical predictions with several related accounts of sentence-processing complexity. [source]