Erik Vandenbussche

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We have identified a limited region in the posterior, but not anterior, half of the cat's middle suprasylvian region which, when cooled and inactivated unilaterally, results in a profound visual neglect of stimuli introduced into the contracooled hemifield. The severity of the deficit matches that induced by unilateral cooling of the superior colliculus.(More)
Human orientation discrimination was measured for single long lines presented sequentially. Orientation sensitivity is better for a narrow range of orientations around the principal meridians. Both the orientation sensitivity and its meridional variation increase with stimulus length. Control experiments show that the "oblique effect" can be obtained as(More)
The hypothesis of a general (i.e. cross-modal) temporal processing deficit in dyslexia was tested by examining rapid processing in both the auditory and the visual system in the same children with dyslexia. Participants were 10- to 12-year-old dyslexic readers and age-matched normal reading controls. Psychophysical thresholds were estimated for auditory gap(More)
Objective information about the onset and progression of cognitive impairment in Huntington’s disease (HD) is very important in the light of appropriate outcome measures when conducting clinical trials. Therefore, we evaluated the progression of cognitive functions in HD patients and asymptomatic carriers of the HD mutation (AC) over a 2.5–year period.We(More)
The effects of circumscribed lesions of the superior temporal cortical motion areas on speed discrimination were tested in three macaque monkeys using both moving random-textured patterns and moving bars. The lesions, which included the middle temporal visual area, the adjacent medial superior temporal visual area and the fundus superior temporal visual(More)
The authors measured orientation discrimination of a single line as a function of eccentricity, line length, and standard orientation. Orientation discrimination improved with increasing line length at all eccentricities. The shortest length at which orientation discrimination was optimal increased with eccentricity. When a line length was used for which(More)
Several studies have tried to establish the prevalence of visual-perceptual impairment in children with physical disabilities, particularly in those with cerebral palsy (CP), but failed to take into account the selective impairment of non-verbal intelligence that is frequent in these children. This has resulted in the confounding of visual-perceptual and(More)
In order to ascertain the first vascular lesions responsible for juvenile diabetic retinopathy, 408 fluorescein angiographies were performed in 114 diabetic children and adolescents whose diabetes became clinically apparent before the age of 14 years. Compared with regular ophthalmoscopy, fluorescein angiography doubles the frequency of the diagnosis of(More)
Sirs: Posterior reversible leucoencephalopathy (PRLE) is a wellknown complication of intravenous or intrathecal treatment with high doses of methotrexate [2–4, 6]. We report a case of PRLE following long-term low-dose administration via the oral route. A 49 year old woman experienced slowly progressive visual and motor disturbances for 5 months. She(More)
The behavioral role of the middle temporal (MT/V5) area and its satellites in motion processing is still unclear, particularly the degree to which MT/V5 proper is critical for different types of motion processing. Therefore, effects of small and large lesions in the caudal part of the superior temporal sulcus of macaque monkeys were compared for two tasks(More)