Previously we have reported a near-infrared optical response in the region occupied by a peripheral nerve that is distal to the site of electrical stimulation of that peripheral nerve. This "intermediate" signal is vascular in nature but its biological origin not been elucidated. In the present study, an animal model of the signal has been created and our human studies expanded to directly inve...

background headache is one of the most prevalent investigated complaints in the neurology clinics and is the most common pain-related complaint worldwide. stress is a significant factor that causes and triggers headaches. since healthcare practitioners experience a lot of stress in their careers, they are more prone to headaches. objectives this study was designed to evaluate and compares the e...

mechanoreceptors of foot sole likely contribute in the reflex regulations. stimulation of these receptors in the lateral aspect of the foot is corresponded to the lateral plantar division of the tibial nerve. therefore, it was hypothesized that repetitive low threshold afferents stimulation would have an inhibitory effect on the soleus h-reflexes. methods: sixteen normal subjects voluntarily pa...

OBJECTIVE To design and fabricate a device to simulate evoked thumb adduction in response to ulnar nerve stimulation. METHODS We implemented a computer-controlled, motorized thumb (TWITCHER) that responds to ulnar nerve stimulation by an unmodified peripheral nerve stimulator. Clinically realistic response patterns are generated for both depolarizing and non-depolarizing muscle relaxants and ...

The sympathetic control of left circumflex coronary blood flow was studied by stellate ganglion and hypothalamic stimulation. Flow was measured acutely in dogs under chloralose or pentobarbital anesthesia by an electromagnetic flowmeter. Coronary vasoconstriction was observed when the left stellate ganglion was stimulated after blocking beta receptors with propranolol or INPEA. The possibility ...

Introduction: The need for fast pulse sequences in magnetic resonance imaging is high. Imaging time depends on the amplitude and rise time of the switched magnetic field gradients. Advances in scanner hardware resulted in gradient systems with high dB/dt values, i.e. high gradient amplitudes with short rise times. dB/dt induces electrical fields in the human body and thus leads to electrical cu...

it has been reported that cither lithium or verapamil can potentiate the neuromuscular blocking activity of certain neuromuscular blockers. in the present investigation, possible interaction of verapamil with lithium has been described. the dose ■ response effects of verapamil and lithium on diaphragmatic contractility were assessed in vitro. mechanical responses of the muscle to indirect (nerv...

One of the two peripheral nerves which innervate rat lumbrical muscle was stimulated chronically in vivo during the postnatal period of synapse elimination to determine whether the differential stimulation would affect the outcome of the elimination process. Rats were anesthetized for about 4 hr a day for 5 to 6 consecutive days, during which time the sural nerve (or, in other animals, the late...

Occipital nerve stimulation (ONS) is a form of peripheral nerve stimulation used to treat refractory headaches. The trial of ONS was carried with the midline incision C1-2 level, inserted electrical lead subcutaneously to oblique and cephalad direction followed by trajectory of blunt dissection. We used 8 pole electrical lead to cover lesser occipital nerve, greater occipital nerve, third occip...

Vagus Nerve Stimulation In article 2201627 by Matsuhiko Nishizawa and co-workers, a totally organic hydrogel-based cuff-type stimulation electrode with self-closing properties is developed. The cuff spontaneously immobilized to the vagus nerve wrapped around bundle harmless pressure. nature of compatible MRI imaging.