Biomedical subjects

J Guleac

Publications and source records attributed to J Guleac.

3 recordsLinked to original sources

PubMedDate not supplied

Towards a taxonomy of aphasic errors. A pilot study.

Error patterns occurring in an aphasic population performing a naming task were explored by factor analysis. This confirmed the existence of two error types: a phonemic and a semantic one. The latter was about twice as important as the former; as a consequence, a weighting system restoring the balance between both was required before submitting patients' scores to cluster analysis. Suitable weighting coefficients were computed according to data obtained by factor analysis. As defect severity interfered with the results of cluster analysis, scores were weighted in order to neutralize the severity dimension.

Aged↗

PubMedDate not supplied

The background of aphasic misnamings. A factor analysis of visual naming errors.

A factor analysis of 4612 errors recorded among the 12 200 responses made by 61 non-selected aphasiacs, during a visual naming task, was performed; the 14 variables were mostly errors described by the neurologic terminology. The existence of a phonemic and a semantic articulation level was confirmed. A feedback system opening the way to alternative responses ("escape mechanisms") was disclosed. Phonemic paraphasias were the most specific errors at the phonemic level, whereas perseverations turned out to be the purest representative at the semantic one. Verbal semantic paraphasias were apparently not a lesser degree of verbal paraphasias but errors of a different nature (Acta neurol. belg., 1985, 85, 110-122).

Aphasia↗

PubMedDate not supplied

A taxonomy of misnaming aphasiacs.

A cluster analysis, based upon the naming errors of 61 non-selected aphasiacs, was performed. Three clusters emerged; the first was marked by phonemic errors, the second by semantic ones and the third by the use of escape mechanisms. Subjects in the second cluster were less impaired; this could be a consequence of the disturbance type involved. Though many patients of first and third groups displayed a Wernicke aphasia, whereas Broca aphasia predominated in the second one, a concordance of clusters with aphasiologic diagnoses was far from excellent.

Adolescent↗