Spontaneous and synaptic excitation of paramedian reticular neurones in the decerebrate cat.

Abstract

5. One third of cells studied showed changes in firing rate correlated with the changes in blood pressure which followed i.v. acetylcholine and noradrenaline.6. Bilateral carotid artery occlusion, which always produced a rise in blood pressure, had little effect on cell firing.

The sensitivity of paramedian reticular neurones to acetylcholine.

“…(4) The paramedian and lateral reticular areas were defined by micro-manipulator readings with reference to a dye mark produced by ejection or potamine sky blue from the micropipette assembly and found by subsequent sectioning (Hellon, 1970). Cells were located by responses to cerebellar stimulation (Duggan & Game, 1975).…”

“…The methods for exposure of the brain stem and for activation of and recording from paramedian reticular neurones have been described in an accompanying paper (Duggan & Game, 1975).…”

“…Antagonism of the action of acetylcholine was not observed. Firing patterns of paramedian reticular neurones in relation to sensitivity to acetylcholine In an accompanying paper (Duggan & Game, 1975), a number of spontaneous and evoked firing patterns in paramedian reticular neurones have been described. If acetylcholine is the transmitter mediating any of these responses, it is probable that a correlation exists between cholinoceptivity and the presence of a particular response.…”

“…An accompanying communication (Duggan & Game, 1975) described firing patterns of these cells particularly in relation to changing blood A. W. DUGGAN AND C. J. A.…”

The Pig Olfactory Brain: A Primer

“…Other studies have examined factors helping to specify the early food preferences of weanlings ( Baldwin 1980 ; Morrow-Tesch and McGlone 1990a , 1990b ; Parfet and Gonyou 1991 ; Kristensen et al 2001 ; McGlone and Anderson 2002 ; Oostindjer et al 2011 ). Apart from these works, the remaining few studies have examined diverse other aspects of their olfactory systems, including their ability to use odors to discriminate conspecifics ( Meese et al 1975 ), the dynamics of neuron addition in the young olfactory bulb (OB; Martin et al 2013 ), the effects of OB removal ( Meese and Baldwin 1975 ; Booth and Baldwin 1980 ; Booth et al 1981 ; Kirkwood et al 1981 ; Koba and Tanida 2001 ; Søndergaard et al 2010 ), estimates of odor sensory capacities in minipigs ( Koba and Tanida 2001 ; Søndergaard et al 2010 ), examinations of nasal patency cycles ( Eccles and Maynard 1975 ; Eccles 1978 ), odorant binding proteins in the nasal mucosa ( Hajjar et al 2006 ; Nagnan-Le Meillour et al 2014 ), OB luteinizing hormone releasing hormone expression ( Leshin et al 1991 ), abnormal development ( Venneman et al 1982 ), and general physiology/synaptology ( Kornguth et al 1976 ; Reinhardt et al 1981 ). A species with such varied and differentiated olfactory capacities deserves more rigorous study.…”