No abstract

In order to examine if specific findings from CT correlate with specific clinical or neurological findings, 30 children, 5 to 16 years old, born at term, affected by congenital hemiparesis without intellectual impairment, were submitted to neurofunctional and psychological assessment and examined by CT. 28 of the 30 children had pathological CT. Two morphological CT patterns were found: A) Cavity in the cortex and underlying subcortical white matter (11 cases); B) Unilateral ventricular enlargement and paraventricular lesions (17 cases). CT was normal in two cases. In our children, born at term, no statistical correlation between CT patterns and anamnestic data was found as described in other studies, although in the patients with cortical-subcortical lesions, there was a slight prevalence of a history of perinatal complications, and in the patients with paraventricular lesions there was an uneventful history or abnormal pregnancy history. The relation between specific CT patterns (type A and B) and specific clinical dysfunction is not statistically evident, (unless for astereognosis and type A CT pattern). However, the patients with cortical-subcortical lesions showed a slight prevalence of a lower function of the impaired hand, and a higher percentage of an I.Q. of less than 90, than the group with unilateral ventricular enlargement. No relation was found between CT lesional pattern and epilepsy. The absence of correlation between morphological aspects and clinical findings could be explained by the complexity of structural changes and remodelling properties of the central nervous system, following prenatal and perinatal brain damage.

We assessed intelligence and receptive and expressive language skills in 6 children, ages 7 years 9 months to 12 years 4 months, with bilateral perisylvian polymicrogyria of variable extent and with dysarthria of different severity. In view of the recent findings of a close relationship between word and gesture, we also examined the communicative use of gesture. We found that mental retardation was related to the extent of cortical malformation; lexical comprehension, but not morphosyntactic comprehension, and verbal production were more compromised than expected from nonverbal intellectual abilities; lack of verbal language was not compensated by the use of referential gestures. Results are discussed suggesting that compromised verbal and gestural communication in bilateral perisylvian polymicrogyria are not due simply to mental retardation and/or dysarthria but also to dysfunction of Sylvian fissure areas concerned with the totality of language processing.

Children with Specific Language Impairment (SLI) and children with Developmental Dyslexia (DD) have problems comprehending relative clauses (RCs) and find object RCs more difficult than subject RCs, as do typically developing children. Few studies have compared these groups directly, leaving it unclear whether the problems observed in children with DD are similar to those described in SLI. Work with typically developing children has shown that the comprehension of passive RCs is less challenging than that of object RCs. It is argued that this asymmetry depends on intervention effects as modelized in a Relativized Minimality framework. Since movement is challenging for children with SLI and those with DD, examining and comparing their comprehension of object RCs and passive RCs can broaden our understanding of their language deficits. In fact, both structures involve movement, but the moved element and the movement configuration are different.In our study we investigated the comprehension of subject RCs, object RCs and passive RCs in 12 Italian monolingual children with SLI (mean age: 7;6), 13 Italian monolingual children with DD (mean age: 10;7) and 50 typically developing controls matched for age, grammar and vocabulary. Results from a picture selection task show that: (i) subject RCs are unproblematic for all children; (ii) object RCs are challenging for children with SLI, children with DD and younger typically developing controls; (iii) passive RCs are better understood than object RCs in all groups, but still problematic for children with SLI and younger typically developing controls. Our data show that intervention effects are found in children with SLI and children with DD and that those with SLI have a deficit in transferring thematic roles to moved elements. Our results point out that some of the children with DD have a mild grammatical deficit that was undetected or escaped standardized tests.

A longitudinal linguistic analysis of aphasic disorder in a 15-year-old boy affected by Landau-Kleffner syndrome followed since the age of 6 is reported. The phonological, morphosyntactic and lexical levels of verbal deficits have been evaluated by means of collected samples of spontaneous language and a battery of linguistic tests. The clinical course has fluctuated with improvement and worsening of aphasia and epilepsy; at the end of the follow-up the boy was seizure-free and a medium-degree disturbance in language production and comprehension was present. The results of the linguistic evaluation suggest that the aphasic disturbance was related to a deficiency in phonological decoding which leads to phonological, morphosyntactic and lexical disturbances. A temporal relationship between the electroclinical picture and the aphasia has been observed: the persistent improvement in linguistic performances took place only after the disappearance of the seizures and of the EEG epileptic anomalies during sleep.