Spinothalamic lamina I neurones selectively responsive to cutaneous warming in cats
نویسندگان
چکیده
منابع مشابه
Lamina I, but not lamina V, spinothalamic neurons exhibit responses that correspond with burning pain.
Single-unit recordings from monkey spinothalamic tract (STT) neurons reveal that the responses of polymodal nociceptive lamina I STT neurons correspond with the profile of burning pain elicited in human subjects by repeated brief-contact heat. In contrast, lamina V wide-dynamic-range (WDR) neurons show a significantly different response pattern. This finding indicates that burning pain is signa...
متن کاملResponses of spinothalamic lamina I neurons to repeated brief contact heat stimulation in the cat.
It was recently shown that repeated heat stimulation, using brief contacts (<1 s) with a preheated thermode at sufficiently short interstimulus intervals (ISIs <5 s) and high temperatures (> or =51 degrees C), will elicit in humans a sensation of rapidly augmenting "second" (burning) pain with only a weak "first" (sharp) pain sensation. Most strikingly, at short intertrial intervals (ITIs >5 s)...
متن کاملResponses of spinothalamic lamina I neurons to maintained noxious mechanical stimulation in the cat.
Noxious mechanical stimuli that are maintained for minutes produce a continuous sensation of pain in humans that augments during the stimulus. It has recently been shown with systematic force-controlled stimuli that, while all mechanically responsive nociceptors adapt to these stimuli, the basis for such pain can be ascribed to A-fiber rather than C-fiber nociceptors, based on distinctions in t...
متن کاملDifferential projections of thermoreceptive and nociceptive lamina I trigeminothalamic and spinothalamic neurons in the cat.
The projections of 40 trigeminothalamic or spinothalamic (TSTT) lamina I neurons were mapped using antidromic activation from a mobile electrode array in barbiturate anesthetized cats. Single units were identified as projection cells from the initial array position and characterized with natural cutaneous stimuli as nociceptive-specific (NS, n = 9), polymodal nociceptive (HPC, n = 8), or thermo...
متن کاملMorphology and distribution of spinothalamic lamina I neurons in the monkey.
Lamina I spinothalamic tract (STT) neurons were identified by retrograde labeling with cholera toxin subunit b (CTb) in monkeys. On the basis of the criteria of somatal shape and dendritic orientation in horizontal sections used in prior work in the cat, three distinct morphological types were recognized: fusiform (F) cells with spindle-shaped somata and two main longitudinal dendritic arbors; ...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 2001
ISSN: 0022-3751,1469-7793
DOI: 10.1111/j.1469-7793.2001.00489.x