Low-threshold mechanoreceptive and nociceptive units with unmyelinated (C) fibres in the human supraorbital nerve.
نویسندگان
چکیده
منابع مشابه
Low-threshold mechanoreceptive afferents in the human lingual nerve.
Intrafascicular multiunit activity and impulses in single mechanoreceptive afferents were recorded from the human lingual nerve with permucosally inserted tungsten microelectrodes. Nylon filaments and blunt glass probes were used for mechanical stimulation of the mucosa of the dorsal surface of the tongue. The innervation territories of nine nerve fascicles were mapped during multiunit recordin...
متن کاملResponse properties of nociceptive and low-threshold mechanoreceptive neurons in the hamster superior colliculus.
There are many somatosensory neurons in the hamster superior colliculus (SC); some respond to innocuous tactile stimuli, while others respond either preferentially, or solely, to noxious stimuli. Yet, there are little quantitative data describing the responses of these neurons. We sought to provide such information by relating stimulus intensity to the magnitude of the neural response using con...
متن کاملConduction velocity along human nociceptive reflex afferent nerve fibres.
The conduction velocity along the nociceptive flexor reflex afferent nerve fibres was investigated in human subjects. The posterior tibal nerve was stimulated at two sites by single painful electrical shocks of 1.0 ms duration and with adequate intensity and the reflex EMG discharges were recorded from the short head of the biceps femoris muscle. The fastest reflex conduction velocity along the...
متن کاملLow threshold unmyelinated mechanoafferents can modulate pain
BACKGROUND Human, hairy skin contains a subgroup of C-fibers, the C-low threshold mechanoreceptive afferents ((C-LTMR) C-tactile or C-touch (CT) fibers) that are linked with the signaling of affective aspects of human touch. Recent studies suggest an involvement of these afferents in the modulation of pain in healthy volunteers. Small fiber neuropathy (SFN) is associated with a damage of C-fibe...
متن کاملEncoding of burning pain from capsaicin-treated human skin in two categories of unmyelinated nerve fibres.
Burning pain was induced in healthy human subjects by intracutaneous injections of capsaicin (20 microl, 0.1%) in the innervation territory of the cutaneous branch of the peroneal nerve and the pain responses were compared with the activation patterns of afferent C-fibres recorded by microneurography. Responsiveness of single units to mechanical or heat stimuli or to sympathetic reflex provocat...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1990
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1990.sp018135