By Michael Persinger
Fresh emphasis upon the significance of the actual surroundings has made technological know-how and the general public much more cog nizant of the various elements of the biosphere. whereas a lot recognition has been given to ionizing electromagnetic stimuli which factors blatant and unalterable alterations in organic structures, fairly little learn has been fascinated with these electromagnetic signs whose frequencies overlap with time-varying strategies in residing organisms. tremendous low frequency (ELF) electromagnetic fields can happen as waves among approximately I Hz to a hundred Hz or as brief pulses inside this diversity of very low frequency (VLF) and better frequency resources. The average incidence of ELF signs is linked to climate adjustments, sunlight disturbances and geophysical ionospheric perturbations. Man-made assets have additionally been mentioned. yes actual houses of ELF indications cause them to first-class applicants for biologically vital stimuli. not like many different climate parts, ELF signs be capable of penetrate constructions which condominium dwelling organ isms. ELF wave configurations let lengthy distance propaga tional capacities with out considerable attenuation of inten sity, hence making them antecedent stimuli to upcoming climate adjustments. most significantly, ELF indications convey the frequencies and wave kinds of bio-electrical occasions that ensue in the mind and physique. hence resonance inter activities among animal and nature develop into beautiful possi bilities.
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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.
ELF and VLF Electromagnetic Field Effects by Michael Persinger