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See detailPhonetics
Leroy, Céline ULg; Tunca, Daria ULg

Learning material (2009)

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See detailPhonological deficits in French speaking children with SLI
Maillart, Christelle ULg; Parisse, Christophe

in International Journal of Language & Communication Disorders (2006), 41(3), 253274

Background: This study investigated the phonological disorders of Frenchspeaking children with specific language impairment (SLI) in production. Aims: The main goal was to confirm whether children with ... [more ▼]

Background: This study investigated the phonological disorders of Frenchspeaking children with specific language impairment (SLI) in production. Aims: The main goal was to confirm whether children with SLI have limitations in phonological ability as compared with normally developing children matched by mean length of utterance (MLU) and phonemic inventory size. A number of researchers have obtained findings pointing in this direction, but the conclusions have never been tested on French-speaking children. The second goal was to find out whether characteristic features of the French language are reflected in the nature of the children’s phonological disorder. Methods & Procedures: The spontaneous language of 16 children with SLI and 16 control children matched on MLU and phonemic inventory size (normal language development group) were analysed using different measures bearing on utterances, words, syllables and phonemes. In both SLI and NLD groups, the children were distributed into two different subgroups based on their MLU, with controlled phonemic inventory size. Outcomes & Results: The results supported a specific limitation in the phonological abilities of French children with SLI, as has already been demonstrated for English, Hebrew, Italian and Spanish-Catalan. However, two unexpected results were also obtained. First, a significant difference between children with SLI and control children could only be found for older children (MLU.3), not for younger children with MLU,3. This was true for all measures. Conclusions: This finding highlights the importance of having a developmental perspective and needs to be confirmed through a longitudinal study. Second, deficits were much more significant at the phoneme level than at the syllable level. This may be explained by the fact that the pronunciation of syllables in French is very homogenous, making them easier to segment. [less ▲]

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See detailPhonological impairment as a decay-based impairment : New evidence from a single case study
Martinez Perez, Trecy ULg; Poncelet, Martine ULg; Boniver, Celine ULg et al

Poster (2009, October 19)

Computational models of language processing such as the Martin and Saffran (1992) model assume two properties underlying language processing: decay rate of activated representations and strength of ... [more ▼]

Computational models of language processing such as the Martin and Saffran (1992) model assume two properties underlying language processing: decay rate of activated representations and strength of activation spread between phonological, lexical and semantic levels of representation. Despite the theoretical and epistemological advantages of these models, as opposed to box-and-arrow type models, empirical evidence for these models is currently based on a very limited number of case studies (e.g., patient NC, Martin & Saffran, 1992; patient CO, Majerus et al., 2001). We present here a new single case study providing further support for the existence of decay rate impairments as an underlying cause of language impairment. [less ▲]

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See detailPhonological loop and central executive functioning in Alzheimer's disease
Collette, Fabienne ULg; Van der Linden, Martial ULg; Bechet, Sophie ULg et al

in Neuropsychologia (1999), 37(8), 905-918

The phonological loop and central executive functioning were examined in patients with Alzheimer's disease (AD) and in normal elderly subjects. AD patients showed abnormal functioning of the phonological ... [more ▼]

The phonological loop and central executive functioning were examined in patients with Alzheimer's disease (AD) and in normal elderly subjects. AD patients showed abnormal functioning of the phonological loop and decreased performance on tasks assessing the central executive. However, when AD patients were separated into two groups on the basis of their span level, both groups showed deficits of the central executive but only patients with the lower span level presented a dysfunction of the phonological loop as well as impaired performance in tasks of phonological discrimination, articulation rate and speed of processing. These results are interpreted in terms of progression of the disease, with high-span level patients being less severely demented and displaying deficits only in higher-level cognitive functions (such as manipulation of information stored in working memory) whereas patients with a low span level have impairments encompassing a series of more basic processes. [less ▲]

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See detailPhonological processing in Williams syndrome
Majerus, Steve ULg

in Bartke, Susanne (Ed.) Williams syndrome across language (2004)

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See detailPhonological representations in children with SLI : a study of French vowels.
Maillart, Christelle ULg; Cazeneuve, Julia; MacLeod, Andrea

Poster (2011, July)

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See detailPhonological representations of children with SLI : a study of French.
Maillart, Christelle ULg; Schelstraete, Marie-Anne; Hupet, Michel

in Journal of Speech, Language, and Hearing research (2004), 47

The present research examined the quality of the phonological representations of French children with specific language impairment (SLI) and those with normal language development (NLD). Twenty-five ... [more ▼]

The present research examined the quality of the phonological representations of French children with specific language impairment (SLI) and those with normal language development (NLD). Twenty-five children with SLI and fifty normally developing children matched on lexical age level participated in an auditory lexical decision task. The observations gathered in our study can be summarized as follows. First, children with a higher receptive lexical level performed better, and this was true both for children with NLD and children with SLI. Second, both children with NLD and SLI were more likely to reject pseudo-words resulting from a modification affecting the number of syllables of a word than pseudo-words resulting from a slight modification with the number of syllables unchanged. This difference, however, was greater for the children with SLI who appeared to have much difficulty rejecting pseudo-words resulting from slight modifications. Finally, the performance of children with SLI was particularly poor when presented with pseudowords resulting from a slight modification at the beginning or the end of a word. These findings are interpreted as supporting the hypothesis of an underspecification of phonological representations in children with SLI. [less ▲]

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See detailPhonological short-term memory networks following recovery from Landau and Kleffner syndrome
Majerus, Steve ULg; Laureys, Steven ULg; Collette, Fabienne ULg et al

in Human Brain Mapping (2003), 19(3), 133-144

Landau-Kleffner syndrome (LKS) is a rare acquired aphasia occurring in otherwise healthy children, together with spike-wave discharges predominating over superior temporal regions and activated by sleep ... [more ▼]

Landau-Kleffner syndrome (LKS) is a rare acquired aphasia occurring in otherwise healthy children, together with spike-wave discharges predominating over superior temporal regions and activated by sleep. Although the outcome of language abilities is variable, a residual impairment in verbal short-term memory (STM) is frequent. This STM deficit might be related to the persistent dysfunction of those temporal lobe regions where epileptic discharges were observed during the active phase of the disorder. We tested this hypothesis by measuring brain activation during immediate serial recall of lists of 4 words, compared to single word repetition, using H(2) (15)O positron emission tomography (PET), in 3 LKS patients after recovery and in 14 healthy controls. The patients (TG, JPH, and DC) had shown abnormally increased or decreased glucose metabolism in left or right superior temporal gyrus (STG) at different stages during the active phase of their disease. At the time of this study, the patients were 6-10 years from the active phase of LKS. Results showed that Patients JPH and DC had impaired performance in the STM condition, whereas TG showed near normal performance. PET data showed that JPH and DC activated significantly less than controls left and right posterior STG. TG, having near normal STM performance, showed increased activity in the posterior part of the right STG. These data suggest that impaired verbal STM at late outcome of LKS might indeed be related to a persistent decrease of activity in those posterior superior temporal gyri that were involved in the epileptic focus during the active phase. [less ▲]

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See detailLa phonologie et la mémoire en classe de français langue seconde
Lucchini, Silvia ULg

Conference given outside the academic context (2003)

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See detailPhonologie, lexique et métaphonologie dans le syndrome de l'X-fragile et le syndrome de Down
Pierart, Bernadette; Comblain, Annick ULg

Conference (1998, May 28)

La présentation passe en revue les résultats d'enfants trisomiques 21 et x-fragile aux épreuves proposée dans la nouvelle batterie d'évaluation du langage ISADYLE. La recherche sur ISADYLE poursuit 4 ... [more ▼]

La présentation passe en revue les résultats d'enfants trisomiques 21 et x-fragile aux épreuves proposée dans la nouvelle batterie d'évaluation du langage ISADYLE. La recherche sur ISADYLE poursuit 4 objectifs : - (a) construire une batterie longue de langage oral, destinée à l' examen approfondi des dysfonctionnements du langage de l'enfant ; - (b) construire une batterie courte de langage oral, à partir des items statistiquement les plus discriminants ; - (c) réaliser des étalonnages corrects sur échantillons proportionnels stratifiés en Belgique francophone, ce qui répond également aux besoins de la sécurité sociale en matière de logopédie de l'enfant; - (d) constituer une banque de données longitudianles et transversales sur le lanngage oral de 1200 enfants de 3 à 12 ans [less ▲]

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See detailPhonology and syntax in French children with SLI: A longitudinal study
Parisse, Christophe; Maillart, Christelle ULg

in Clinical Linguistics & Phonetics (2007), 21(11-12, NOV-DEC), 945-951

Maillart and Parisse found out that French children with specific language impairment (SLI) presented strong difficulties in phonology when compared with normally-developing children matched by MLU (NLD ... [more ▼]

Maillart and Parisse found out that French children with specific language impairment (SLI) presented strong difficulties in phonology when compared with normally-developing children matched by MLU (NLD). Some of the youngest children from this study were followed to provide developmental information about their language deficit. Children were tested again in the same way as before (free spontaneous production) and matched by MLU against other NLD children. The previous phonological analysis was extended to include syntax as well as phonology. Percentage of words correct was computed for both phonology and syntax. An analysis of covariance (ANCOVA) was performed with children's age as covariate. Results showed a significant difference between SLI and NLD children for phonology but not for syntax. There was a trend that showed that the difference between SLI and NLD children tended to increase with age. The same analysis was performed separately for 9 frequent syntactic categories for phonology and for syntax. A significant difference was found for prepositions, nouns, subject pronouns, and verbs in phonology. Effects were found for determiners and prepositions in syntax. As well as confirming the importance of phonological difficulties in SLI, our results call for a developmental theory of phonological and syntactic deficits in SLI, where differences between SLI and NLD grow with age and where there is a timing difference between phonology (earlier) and syntax (later). [less ▲]

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See detailPhonon band structure and electron-phonon interactions in metallic nanowires
Verstraete, Matthieu ULg; Gonze, Xavier

in Physical Review. B : Condensed Matter (2006), 74

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See detailPhonon spectroscopy in a Bi2Te3 nanowire array
Bessas, Dimitrios; Toellner, William; Aabdin, Zainul et al

in NANOSCALE (2013), 5(21), 10629-10635

The lattice dynamics in an array of 56 nm diameter Bi2Te3 nanowires embedded in a self-ordered amorphous alumina membrane were investigated microscopically using Te-125 nuclear inelastic scattering. The ... [more ▼]

The lattice dynamics in an array of 56 nm diameter Bi2Te3 nanowires embedded in a self-ordered amorphous alumina membrane were investigated microscopically using Te-125 nuclear inelastic scattering. The element specific density of phonon states is measured on nanowires in two perpendicular orientations and the speed of sound is extracted. Combined high energy synchrotron radiation diffraction and transmission electron microscopy was carried out on the same sample and the crystallinity was investigated. The nanowires grow almost perpendicular to the c-axis, partly with twinning. The average speed of sound in the 56 nm diameter Bi2Te3 nanowires is similar to 7% smaller with respect to bulk Bi2Te3 and a decrease in the macroscopic lattice thermal conductivity by similar to 13% due to nanostructuration and to the reduced speed of sound is predicted. [less ▲]

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See detailPhosphate derivatives of thiamine and Na-channel in conducting membranes
Schoffeniels, Ernest; Dandrifosse, Guy ULg; Bettendorff, Lucien ULg

in Journal of Neurochemistry (1984), 43

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See detailPhosphate mineral associations in the Cema pegmatite (San Luis Province, Argentina) : Paragenesis, chemistry and significance in the pegmatite evolution
Roda-Robles, Encarnacion ULg; Galliski, Miguel; Roquet, M. B. et al

in Estudios Geologicos (2009), 19(2), 300-304

Detailed reference viewed: 22 (2 ULg)