Florence Bouchet

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Non-linear quantifiers of brain electrical dynamics (entropy maps computed from the degradation of temporal forecasting of EEG signals) were studied in relation to drug treatment of Alzheimer's disease. A placebo condition was compared to three drug doses (50, 100 and 200 mg). A significant general effect of the drug was found when compared to placebo and(More)
The neural correlates of the response to performance feedback have been the object of numerous neuroimaging studies. However, the precise timing and functional meaning of the resulting activations are poorly understood. We studied the electroencephalographic response time locked to positive and negative performance feedback in a hypothesis testing paradigm.(More)
We analyzed the time-varying modulation of gamma (>30 Hz) electroencephalographic (EEG) activity exerted by positive and negative feedback in a hypothesis testing paradigm. Ten college students serially tested hypotheses concerning a hidden rule by judging its presence or absence in triplets of digits and revised them on the basis of an exogenous(More)
We used the electroencephalogram (EEG) to investigate whether positive and negative performance feedbacks differentially modulate late time-locked oscillatory brain activity in hypothesis testing. Ten college students serially tested hypotheses concerning a hidden rule by judging its presence or absence in triplets of digits, and revised them on the basis(More)
Between 1979 and 1990 we have seen 8 patients (7 females) with rheumatoid arthritis (RA) who developed a neuro-muscular involvement while on D-penicillamine (D.P.). Five of them had a drug-induced myasthenia. D.P. withdrawal led to a complete recovery in 1.5 to 5 months. Another patient presented with a myopathy which led to the diagnosis of Grave's(More)
Long term effects on creatinine serum level of successful percutaneous transluminal renal angioplasty were retrospectively studied in 140 patients. 3 groups were distinguished: the first one (80 patients) included unilateral renal angioplasties, with normal contralateral kidney and renal artery; the second group (35 patients) included bilateral renal(More)
At screening mammography, lesions must be assigned to BI-RADS classification. Category 3 is used for nonpalpable probably benign lesions. This category is defined either by a subset of lesions that are so likely to be benign that follow-up is a reasonable alternative to immediate biopsy, or by a less than 2% malignancy rate for American BI-RADS, or than 5%(More)
The authors report the case of a one-year-old infant in whom routine examination by the paediatrician demonstrated left testicular swelling. Subsequent assessment (scrotal ultrasound and laboratory tests) revealed only a moderate increase of alpha-foetoprotein levels. Orchidectomy was performed due to a suspicion of vitelline tumour. Histological(More)
Doppler ultrasonography is a first-choice, non-invasive, inexpensive and repeatable procedure for exploring major veins and for detecting venous thrombosis, venous insufficiency and arterio-venous fistulae. It also provides invaluable information on post-operative haemodynamics in cases of thrombectomy, venous shunt and vena cava clip, and helps in(More)