By R. D. Foreman (auth.), Professor Dr. Hansjochem Autrum, Professor Dr. Edward R. Perl, Professor Dr. Robert F. Schmidt, Professor Dr. Hiroshi Shimazu, Professor Dr. William D. Willis, Professor Dr. David Ottoson (eds.)
Sympathetic afferent fibers originate from a visceral organ, path within the thoracolumbar rami communicantes, have phone our bodies situated in dorsal root ganglia, and terminate within the grey subject of the spinal wire. Sympathetic afferent fibers from the center transmit information regarding noxious stimuli linked to myocardial ischemia, i. e. angina pectoris. prior experiences have defined the features of cardiovascular sympathetic afferent fibers (Bishop et al. 1983; Malliani 1982). This assessment summarizes that paintings and makes a speciality of the neural mechanisms underlying the complexities of angina pectoris. so one can comprehend anginal ache, cells forming the classical discomfort pathway, the spinothalamic tract (STn, have been selected for research. those cells have been selected to handle questions about anginal soreness simply because they transmit nociceptive informa of ache. Antidromic tion to mind areas which are all for the belief activation of STT cells supplied a method of choosing cells concerned with trans challenge of nociceptive info in anesthetized animals. different ascending pathways can also transmit nociceptive info, yet many reviews convey that the STT performs a tremendous position. Visceral ache is usually noted overlying somatic constructions. The ache of angina pectoris will be sensed over a large quarter of the thorax: within the retrosternal, precordial anterior thoracic, and anterior cervical areas of the chest; within the left or occasionally even the correct shoulder, arm, wrist, or hand; or within the jaw and the teeth (Harrison and Reeves 1968).
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Extra info for Progress in Sensory Physiology 9
J Neurosci 7(12):4159 - 4164 Burton H, Craig AD (1983) Spinothalamic projections in cat, raccoon and monkey: a study based on anterograde transport of horseradish peroxidase. In: Macchi G, Rustioni A, Spreafico R (eds) Somatosensory integration in the thalamus. Elsevier, Amsterdam, pp17-41 Carstens E (1982) Inhibition of spinal dorsal horn neuronal responses to noxious skin heating by medial hypothalamic stimulation in the cat. J Neurophysiol 48:808 - 822 Carstens E, Trevino DL (1978) Laminar origins of spinothalamic projections in the cat as determined by the retrograde transport of horseradish peroxidase.
1986). In humans the area surrounding the third ventricle is a particularly effective site for evoking stimulus-produced analgesia (Dieckmann and Witzmann 1982; Fairman 1979; Mayanagi et al. 1982; Mazars et al. 1979; Meyerson et al. 1979; Richardson and Akil1977a, b). Electrical stimulation of the peri ventricular gray inhibits the responses of all STT cells in the thoracic Organization of the Spinothalamic Tract 35 A 3 . VI " VI VI :; 0. -:t: , E > ~ " :::: '" u B Fig. 26A, B. Effects of stimulating the nucleus raphe magnus on the discharge rate of STT cells to intracardiac injections of bradykinin.
B SC-PB stimulation sites are marked by black dots on one brains tern section of the monkey drawn from the atlas of Szabo and Cowan (1984) and modified according to Westlund et al. (1984). The left side is ipsilateral to the spinothalamic tract cell. BC, brachium conjunctivium; LPB, lateral parabrachial nucleus; MPB, medial parabrachial nucleus; SC, nucleus subcoeruleus; LC, nucleus locus coeruleus; Py, pyramid; OJ, inferior olivary nucleus. (From Brennen et al. 1987, with permission from Elsevier Biomedical Press) 34 R.
Progress in Sensory Physiology 9 by R. D. Foreman (auth.), Professor Dr. Hansjochem Autrum, Professor Dr. Edward R. Perl, Professor Dr. Robert F. Schmidt, Professor Dr. Hiroshi Shimazu, Professor Dr. William D. Willis, Professor Dr. David Ottoson (eds.)