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P Eling

Publications and source records attributed to P Eling.

6 recordsLinked to original sources

Bilingual language processing after a lesion in the left thalamic and temporal regions. A case report with early childhood onset.

This case study concerns an 18-year-old bilingual girl who suffered a radiation lesion in the left (dominant) thalamic and temporal region when she was 4 years old. Language and memory assessment revealed deficits in auditory short-term memory, auditory word comprehension, nonword repetition, syntactic processing, word fluency, and confrontation naming tasks. Both languages (English and Dutch) were found to be affected in a similar manner, despite the fact that one language (English) was acquired before and the other (Dutch) after the period of lesion onset. Most of the deficits appear to be related to verbal (short-term) memory dysfunction. Several hypotheses of subcortical involvement in memory processes are discussed with reference to existing theories in this area.

Adolescent

[Hemisphere differences in aging: an artifact].

The observation that language processes in particular resist aging relatively well, gave rise to the hypothesis that the right hemisphere declines more rapidly than the left. In this review we discuss results from different lines of research relevant to this issue. It appears that the hypothesis is based on methodologically weak studies. Factors such as task characteristics, familiarity with stimulus materials and practice effects have been controlled insufficiently in the past and they may well explain the observed effects. Moreover, no clear neuropathological differences between the hemispheres have been reported. Therefore, it seems reasonable not to assume differential rates of aging for the two hemispheres.

Adult

Paragrammatic speech without a comprehension deficit? A case report.

In this article we present a case report of a patient, who had a peculiar pattern of language use following a stroke. The two most prominent features were language switches during spontaneous speech in the first months postonset, when the patient mixed English, German, and French words and utterances into his mother tongue (Dutch); clearly disturbed speech output, showing signs of word-finding problems and paragrammatism but hardly any paraphasias, while at the same time no evidence of a language disturbance could be obtained with standard clinical aphasia tests.

Aged

Recognition of derivations in Broca's aphasics.

A well-known feature of Broca's aphasia is the problem of handling "small words." It has been claimed that patients show these problems in both language production and language perception. The traditional dichotomy of "function" words and "content" words is probably not a good description of the classes of words that are affected and intact. It has long been recognized that not only do Broca's aphasics have problems with free closed class morphemes, but that also bound morphemes, such as verb inflections, are often omitted in spontaneous speech. The question arises whether all bound morphemes, being members of the closed class category, are difficult to process for Broca's aphasics. Using a lexical decision task the recognition of derivational word forms was studied in Broca's aphasics and two control groups. The pattern of results is very similar in the three groups. Derivational word forms are recognized as lexical items independent of the stem. It is concluded that Broca's aphasics can process derivational affixes appropriately. The consequences of this conclusion for the characterization of the class of "small" words are discussed.

Adult

[Causes of the slowing-down of cognitive processes in aging: the noise hypothesis].

A typical phenomenon accompanying aging is the slowing down of cognitive processes. This slowing down may be considered to affect only specific aspects of information processing or it may be looked upon as a general property. As yet there exists no generally accepted explanation of this phenomenon. There is disagreement about the exact localisation and the physiological basis of the slowing down. However, a number of hypotheses has been formulated. These hypotheses have in common that the slowing down is attributed to a form of 'noise', either at neuronal level or at psychological level. We discuss several of these noise-related theories and their predictions and review the empirical basis for each of them. It is concluded that the different hypotheses do not exclude each other and that slowing down of cognitive processes can be observed at different levels of information processing.

Aging