Bernard Bussel

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BACKGROUND AND PURPOSE The goal of this study was to characterize cortical reorganization after stroke and its relation with the site of the stroke-induced lesion and degree of motor recovery using functional MRI (fMRI). METHODS Fourteen stroke patients with an affected upper limb were studied longitudinally. Three fMRI sessions were performed over a(More)
Electromyographic (EMG) flexor muscle responses evoked by electrical stimulation of ipsilateral peripheral nerves were studied in 16 patients with clinically complete spinal cord transection. Stimuli were applied either to a cutaneous nerve (sural) or to a mixed nerve (tibial) and muscle responses were recorded from tibialis anterior, biceps femoris and(More)
OBJECTIVES To examine the mechanisms of alternative strategies developed by stroke patients to compensate their motor impairment and their role in recovery. MATERIAL AND METHODS The three-dimensional kinematics of the upper limb were quantified during unconstrained reaching movements in seven healthy individuals and in 15 stroke patients. Nine patients(More)
The effects of electrically stimulating the Flexor Reflex Afferent (FRA) on the soleus H reflexes were investigated in 34 paraplegic patients having a clinically complete spinal cord lesion. Conditioning stimuli (5–50 mA) were applied to the ipsilateral or contralateral sural nerve. The conditioning-test interval ranged from 20 to 1000 ms. A late(More)
Adequate grip force modulation is critical to manual dexterity and often impaired in hemiparetic stroke patients. Previous studies in hemiparetic patients suggest that aspects of grip force control may be differently affected by the lesion. We developed a visuomotor power grip force-tracking task allowing quantification of tracking error, force variability(More)
Ten patients presenting agitation and anger outbursts at various stages following a severe closed head injury, were treated in a prospective open trial with carbamazepine, with doses ranging from 400 to 800 mg per day, during 8 weeks. Group analysis demonstrated a statistically significant improvement of a score made up from six target items from the(More)
We studied the effect of the intrathecal (i.t.) injection of clonidine (30, 60 and 90 µg) on the polysynaptic spinal reflexes (PSR) elicited by electrical stimulation of flexor reflex afferents (FRA), monosynaptic reflex and gait of 11 subjects with spinal cord injuries. The effect of clonidine administration on gait velocity, stride amplitude and duration(More)
A bimanual loading task was studied in eight right-handed normal subjects and nine hemiparetic patients in order to detect anticipatory adjustments and to analyse the reflex and voluntary, responses induced by the perturbation. The left forearm (or the impaired side in patients) was flexed at approximately 90 degrees and free to rotate in a vertical(More)
Aims: C6 quadriplegic patients lack voluntary control of their triceps muscle but can still perform reaching movements to grasp objects or point to targets. The present study documents the kinematic properties of reaching in these patients.Materials and methods: We investigated the kinematics of prehension and pointing movements in four quadriplegic(More)
STUDY DESIGN A case report of purely epidural foraminal cervical cavernous angioma assessed by magnetic resonance imaging and diagnosed at pathologic study. OBJECTIVE To illustrate a rare cause of cervical foraminal mass mimicking a schwannoma. SUMMARY OF BACKGROUND DATA Several cases of epidural cavernous angioma have been reported. A purely epidural(More)