| Abstract: | Human evoked potentials to somatosensory stimuli of non-painful and painful intensity recorded from the vertex have been studied. The indices of variability of N150 and P250 components registered in the same subject as well as indices of interrelationship between spontaneous changes of these components decreased when stimulus intensity increased. A supposition is advanced that the role of general source responsible for generations N150 and P250 components diminished when stimulus intensity increased, accordingly participation of autonomic sources became more prominent. |
