caa a22 4500 475835417 CHVBK 20180406123851.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/BF02515164 doi (NATIONALLICENCE)springer-10.1007/BF02515164 Mechanisms of corticofugal control of the activity of "vagal” viscerosensory neurons in the Nucleus tractus solitarii [Elektronische Daten] [O. Baklavadjan, É. Avetisyan, R. Markosyan, F. Adamyan, A. Petrosyan] In experiemnts on cats under chloralose-nembutal anesthesia, we studied viscerosensory neurons in thenucl. tractus solitarii identified by their responses to stimulation of then. vagus. The responses of these cells to stimulation of the secondary sensorimotor cortex (zoneS2) and dorsal regions of field 25 of the limbic cortex (DLC) were recorded. A substantial part of the "vagal” viscerosensory units demonstrated convergent properties and responded toS2 and DLC stimulations by phasic responses. The short latencies of these responses were indicative of oligosynaptic and, in some cases, even monosynaptic transmission of corticofugal influences on a considerable part of such neurons. Using paired stimulation allowed us to demonstrate that the effects of stimulation of the visceral afferent fiber undergo long-lasting suppression exerted by descending corticofugal volleys. The mechanisms of cortical control of the activity of bulbar viscerosensory neurons are discussed. Kluwer Academic/Plenum Publishers, 2000 nucleus tractus solitarii nationallicence viscerosensory neurons nationallicence nerv. vagus nationallicence corticofugal control nationallicence Baklavadjan O. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut Avetisyan É. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut Markosyan R. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut Adamyan F. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut Petrosyan A. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut Neurophysiology Kluwer Academic Publishers-Plenum Publishers 32/1(2000-01-01), 23-28 0090-2977 32:1<23 2000 32 11062 https://doi.org/10.1007/BF02515164 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02515164 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baklavadjan O. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut NATIONALLICENCE 700 1- Avetisyan É. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut NATIONALLICENCE 700 1- Markosyan R. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut NATIONALLICENCE 700 1- Adamyan F. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut NATIONALLICENCE 700 1- Petrosyan A. Orbeli Institute of Physiology, National Academy of Sciences of Armenia, Yerevan, Armenia aut NATIONALLICENCE 773 0- Neurophysiology Kluwer Academic Publishers-Plenum Publishers 32/1(2000-01-01), 23-28 0090-2977 32:1<23 2000 32 11062 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer