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- Microneurography is a neurophysiological method employed to visualize and record the traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. It can also be used in animal recordings. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified nerve, a fine tungsten needle microelectrode is inserted into the nerve and connected to a high input impedance differential amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates nerve impulses of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements. (en)
- La microneurographie est une technique d'enregistrement électrophysiologique à l'aide de micro-électrodes métalliques insérées à l'intérieur des fascicules nerveux. (fr)
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- 34233 (xsd:nonNegativeInteger)
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- Schematic illustration of experimental setup for recording nerve impulses from a touch afferent in the hairy skin of a human arm. A series of single unit impulses in response to a touch stimulus are shown as well as one of the impulses on expanded time scale to demonstrate impulse shape. (en)
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- record the normal traffic of nerve impulses that are conducted in peripheral nerves (en)
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- La microneurographie est une technique d'enregistrement électrophysiologique à l'aide de micro-électrodes métalliques insérées à l'intérieur des fascicules nerveux. (fr)
- Microneurography is a neurophysiological method employed to visualize and record the traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. It can also be used in animal recordings. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified nerve, a fine tungsten needle microelectrode is inserted into the nerve and connected to a high input impedance differential amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates nerve impulses of interest. (en)
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- Microneurographie (fr)
- Microneurography (en)
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