References of "Neurophysiologie Clinique = Clinical Neurophysiology"
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See detailAutonomic aspect of emotional response in depressed patients: relationships with personality.
Mardaga, S.; Hansenne, Michel ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2009), 39(4-5), 209-16

STUDY AIM: Affective symptoms are major descriptors of depression; therefore, a lot of studies investigated emotional-responsiveness modulation in depression, and reported either a potentiation of ... [more ▼]

STUDY AIM: Affective symptoms are major descriptors of depression; therefore, a lot of studies investigated emotional-responsiveness modulation in depression, and reported either a potentiation of negative affects, a reduction of positive affects, or a reduction of both positive and negative affects. On the other hand, personality was classically found to be modulated in depression, with behavioral inhibition system (BIS)-related dimensions (namely harm avoidance (HA), neuroticism) showing higher scores in depressed subjects. The aim of this study was to investigate the relationships between emotional responsiveness (as measured by skin conductance response [SCR]) and personality in depression. METHODS: SCR was recorded following the presentation of neutral, pleasant, and unpleasant pictures in 20 depressed subjects and 20 controls. RESULTS: Pleasant pictures elicited more and larger responses than unpleasant ones in control but not in depressed subjects. This effect was not modulated by personality. Moreover, depressed subjects were found to show generally faster half-recovery times and to rate emotional pictures as less arousing than control subjects and these effects disappeared when BIS-related dimensions were controlled. CONCLUSIONS: These results suggest that BIS-related dimensions are independent from the specifically reduced responses to pleasant pictures, but are involved in the observed general affect reducing. [less ▲]

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See detailPersonality modulation of P300 wave recorded within an emotional oddball protocol.
Mardaga, S.; Hansenne, Michel ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2009), 39(1), 41-8

OBJECTIVES: Several studies reported that personality modulates responses to emotional stimuli, including cognitive and attentional aspects of the emotional response. The aim of this study was to refine ... [more ▼]

OBJECTIVES: Several studies reported that personality modulates responses to emotional stimuli, including cognitive and attentional aspects of the emotional response. The aim of this study was to refine these results while using visual event-related potentials (ERPs) and referring to Cloninger's personality model. METHODS: ERPs were recorded in 46 normal subjects within a visual oddball protocol with checkerboards as the standard stimuli and pictures selected as neutral, pleasant or unpleasant from the International Affective Picture System as the target stimuli. RESULTS: N200 amplitude was smaller and P300 amplitude was larger following the presentation of pleasant pictures in low-harm avoidance but not high-harm avoidance subjects. CONCLUSIONS: These results support the idea that both automatic and selective cognitive processing of emotional pictures is modulated by personality. [less ▲]

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See detailStimulus-response curve of human motor nerves: multicenter assessment of various indexes.
Boerio, D.; Hogrel, J.-Y.; Lefaucheur, J.-P. et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2008), 38(1), 31-8

The value of various indexes to characterize the stimulus-response curve of human motor nerves was assessed in 40 healthy subjects recruited from four European centers of investigation (Creteil, Lausanne ... [more ▼]

The value of various indexes to characterize the stimulus-response curve of human motor nerves was assessed in 40 healthy subjects recruited from four European centers of investigation (Creteil, Lausanne, Liege, Marseille). Stimulus-response curves were established by stimulating the right median and ulnar motor nerves at the wrist, with stimulus durations of 0.05 and 0.5 ms. The following parameters were studied: the threshold intensity of stimulation to obtain 10% (I 10), 50% (I 50), and 90% (I 90) of the maximal compound muscle action potential, the ratios I 10/I 50, I 90/I 50, (I 90 - I 10)/I 10, (I 90-I 50)/I 50, and (I 50 - I 10)/I 10, and the slopes of the stimulus-response curves with or without normalization to I 50. For each parameter, within-center variability and reproducibility (in a test-retest study) were assessed and between-center comparisons were made. For most of the parameters, the results varied significantly within and between the centers. Within the centers, only the ratios I 10/I 50 and I 90/I 50 were found constant and reproducible. Between the centers, the absolute intensity thresholds (I 10, I 50, I 90) and the ratio I 90/I 50 did not show significant differences at stimulus duration of 0.5 ms, whatever the stimulated nerve. The reduced variability and good reproducibility of the ratios I 10/I 50 and I 90/I 50 open perspectives in neurophysiological practice for the use of these indexes of the stimulus-response curve, a rapid and noninvasive test. [less ▲]

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See detailSome genetic and biochemical aspects of myoclonus
Grisar, Thierry ULg; de Nijs, Laurence ULg; Chanas, G. et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2006), 36(5-6, Sep-Dec), 271-279

Can a gene defect be responsible for the occurrence in an individual, at a particular age, of such a muscle twitch followed by relaxation called: "myoclonus" and defined as sudden, brief, shock-like ... [more ▼]

Can a gene defect be responsible for the occurrence in an individual, at a particular age, of such a muscle twitch followed by relaxation called: "myoclonus" and defined as sudden, brief, shock-like movements? Genetic defects could indeed determine a subsequent cascade of molecular events (caused by abnormal encoded proteins) that would produce new aberrant cellular relationships in a particular area of the CNS leading to re-builded "myoclonogenic" neuronal networks. This can be illustrated reviewing some inherited neurological entities that are characterized by a predominant myoclonic picture and among which a clear gene defect has been identified. In the second part of this chapter, we will also propose a new point of view on how some structural genes could, under certain conditions, when altered, produced idiopathic generalized epilepsy with myoclonic jerks, taking juvenile myoclonic epilepsy (JME) and the myoclonin (EFHC-1) gene as examples. (c) 2007 Elsevier Masson SAS. All rights reserved. [less ▲]

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See detailDegré d'atteinte nerveuse périphérique dans la SLA, la SLP et la maladie de Kennedy
WANG, François-Charles ULg; Le Forestier, Nadine; GERARD, Pascale ULg et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailMatériel et méthode de la constitution des valeurs de référence
WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailGeneral principles for clinical use of repetitive transcraniat magnetic stimulation (rTMS)
Maertens De Noordhout, Alain ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006), 36(3, May-Jun), 97-103

Repetitive transcranial magnetic stimulation (rTMS), a non-invasive technique allowing stimulating neurons in the cerebral cortex, is able to modify durably local as well as distant neuronal activity ... [more ▼]

Repetitive transcranial magnetic stimulation (rTMS), a non-invasive technique allowing stimulating neurons in the cerebral cortex, is able to modify durably local as well as distant neuronal activity. Results obtained by stimulation of the primary motor cortex and measurements of induced muscle responses suggest that effects on cortical excitability depend on stimulation frequency and intensity, as welt as of pulse-train duration. Such data, as welt as results of animal studies have brought a physiological basis for the use of rTMS for treatment of various neurological and psychiatric disorders, and particularly depression. Nevertheless, as tong as large randomized studies have not been conducted, rTMS should not replace other existing and validated therapies. (c) 2006 Elsevier Masson SAS. All rights reserved. [less ▲]

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See detailNouvelle approche neurophysiologique du syndrome du canal carpien
WANG, François-Charles ULg; ISERENTANT, Cynthia ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailTable ronde : "Le Normal et le Pathologique"
Fournier, Emmanuel; Jabre, JF; Labarre-Vila, Annick et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailValeur pronostique de la TASPM dans la SLA
WANG, François-Charles ULg; GERARD, Pascale ULg; MAERTENS DE NOORDHOUT, Alain ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailAtteinte du nerf sus-scapulaire : corrélations entre l’évaluation isocinétique et l’ENMG
Goffinet, Estelle ULg; Mazza, Laetitia; Forthomme, Bénédicte ULg et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2004, May), 34

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See detail« Myosite » focale de la loge antéro-externe de la jambe : à propos d’un cas
TOMASELLA, Marco ULg; CRIELAARD, Jean-Michel ULg; WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2004)

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See detailExcitabilité nerveuse et neuropathies périphériques : résultats d’une étude multicentrique
Kuntzer, Thierry; Carrera, E; Boërio, D et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2004)

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See detailAtteinte du nerf sus-scapulaire : corrélations entre l’évaluation isocinétique et l’ENMG
GOFFINET, Estelle ULg; Mazza, L; FORTHOMME, Bénédicte ULg et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2004)

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See detailEvaluation des paramètres neurophysiologiques permettant un diagnostic précoce de « thoracic outlet syndrome » (TOS)
Hua, MT; DUBUISSON, Annie ULg; Zeevaert, Bernard et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2004)

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See detailSymétrie et reproductibilité temporelle des données neurographiques Bouquiaux O, Wang FC
BOUQUIAUX, Olivier ULg; WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2004)

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See detailSymetrie et reproductibilite temporelle des donnees neurographiques.
Bouquiaux, Olivier ULg; Horward, A.; Wang, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2003), 33(4), 185-95

The aims of the present study are to document side-to-side differences and temporal variability, between two trials (T1 and T2 at a time interval of 3 months) of nerve conduction measurements collected ... [more ▼]

The aims of the present study are to document side-to-side differences and temporal variability, between two trials (T1 and T2 at a time interval of 3 months) of nerve conduction measurements collected from 30 healthy subjects (mean age 22 +/- 2 years). METHODS: The protocol at T1 consisted of motor nerve conduction studies of median, ulnar, peroneal and tibial nerves bilaterally, with measurement of (a) motor response size (amplitude and area); (b) terminal latency; (c) minimal, mean and maximal F-wave latency; (d) motor conduction velocity; and (e) F-wave occurrence. T1 also involved sensory nerve conduction studies of median, ulnar, radial, lateral and medial cutaneous, sural and superficial peroneal nerves bilaterally, with measurement of sensory potential size (amplitude and area) and computation of sensory conduction velocity. The protocol at T2 consisted of identical measurements from the dominant side. RESULTS AND CONCLUSION: There was a negative relationship between the variability of parameters evaluating nervous conduction and the length of the nerve segment under study. Thus, the smallest side-to-side and temporal variabilities are measured for minimal F-wave latencies (on average 2-3%). The limits of symmetry and temporal variability are particularly useful for diagnosis of unilateral peripheral neuropathy or neurophysiological follow-up of patients with neuropathy, when the variability of the parameter under study is weak and when there is a high correlation between values recorded on the left and on the right or at T1 and T2. This was the case for motor response size of tibial and ulnar nerves, sensory potential size of radial nerve and minimal F-wave latencies from each studied motor nerve. [less ▲]

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See detailEtude electromyographique paravertebrale dorso-lombaire. Analyse en mode multi-MUP et etablissement de normes au sein d'une population de reference
Tomasella, Marco ULg; Crielaard, Jean-Michel ULg; Wang, F. C.

in Neurophysiologie Clinique = Clinical Neurophysiology (2002), 32(2), 109-17

OBJECTIVE: The aim of this study was to contribute to draw up reference values relating to electromyographic (EMG) parameters in dorsal and lumbar paraspinal muscles. MATERIALS AND METHODS: 75 healthy ... [more ▼]

OBJECTIVE: The aim of this study was to contribute to draw up reference values relating to electromyographic (EMG) parameters in dorsal and lumbar paraspinal muscles. MATERIALS AND METHODS: 75 healthy subjects without back pain underwent electromyography of multifidus bundles, which are innervated uni-segmentally by the dorsal ram of the spinal nerve. T8, L3, L4, L5 and S1 myotomes were systematically explored. Output variables were spontaneous denervation activity and quantitative EMG data obtained by multi-MUP (Motor Unit action Potential) analysis. RESULTS: No abnormal insertional or spontaneous activity (such as fibrillation, positive sharp waves or fasciculation) was recorded at rest. Neither sex nor age influenced motor unit action potential features in our series. Reference values were drawn up for T8 and L5 segmental levels using the mean values of 20 motor unit potentials in each patient studied, the reference interval being defined by the lower and the upper outlier limits on individual values. CONCLUSION: This study offers reference data to electromyographers to help better identifying possible myogenic or neurogenic pathological changes, especially in lumbosacral radiculopathies. [less ▲]

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See detailLésion du nerf interosseux postérieur liée à une randonnée prolongée en vélo-tout-terrain (VTT)
Zeevaert, Bernard; CRIELAARD, Jean-Michel ULg; WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2002)

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