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Different projections of the central amygdaloid nucleus mediate autonomic and behavioral correlates of conditioned fear
Electrolytic and ibotenic acid lesions of the LH demonstrate that neurons in the LH are involved in the autonomic, but not the behavioral, conditioned response pathway, whereas neurons inThe caudal CG are involvedIn the behavioral and autonomic pathway, although different efferent projections of the central amygdala thus appear to mediate the behavioraland autonomic concomitants of conditioned fear.
Agmatine: an endogenous clonidine-displacing substance in the brain.
Agmatine, locally synthesized, is an endogenous agonist at imidazoline receptors, a noncatecholamine ligand at alpha 2-adrenergic receptors and may act as a neurotransmitter.
Spontaneous waves of cerebral blood flow associated with a pattern of electrocortical activity.
The results indicate that a population of local cortical neurons, probably driven from subcortical pacemakers, when excited, elicits local cerebrovascular vasodilation in spinalized rats anesthetized with 1.5% isoflurane.
Is agmatine a novel neurotransmitter in brain?
Inhibition of mammalian nitric oxide synthases by agmatine, an endogenous polyamine formed by decarboxylation of arginine.
Agmatine, decarboxylated arginine, may be an endogenous regulator of NO production in mammals and was a competitive NOS inhibitor but not an NO precursor.
Tonic vasomotor control by the rostral ventrolateral medulla: effect of electrical or chemical stimulation of the area containing C1 adrenaline neurons on arterial pressure, heart rate, and plasma
Neurons within the RVL, most probably C1 adrenaline- synthesizing neurons, exert an excitatory influence on sympathetic vasomotor fibers, the adrenal medulla, and the posterior pituitary, as well as under tonic inhibitory control, in part via GABAergic mechanisms.
Organization of central adrenergic pathways: I. Relationships of ventrolateral medullary projections to the hypothalamus and spinal cord
We studied the organization of projections from the C1 adrenergic and A1 noradrenergic cell groups in the ventrolateral medulla (VLM) to the hypothalamus and the spinal cord by using a combination of
Topographic organization of convergent projections to the thalamus from the inferior colliculus and spinal cord in the rat
The extent to which afferent projections to the thalamus from the inferior colliculus and spinal cord converge is graded in the caudorostral plane, with the greatest overlap occurring at the level of the rostral third of the MGB.
The Origin of Man : A Chromosomal Pictorial Legacy
This study uses the remarkable similarity of chromosomes of man, chimpanzee, gorilla, and orangutan, the few changes needed to explain their differences, and the use of ancestral chromosomal patterns to derive the general sequence of events that might have taken place in primate evolution prior to man's emergence to suggest likely karyotypes for three presumed common ancestors of apes and man.
Projections from the nucleus tractus solitarii to the rostral ventrolateral medulla
Projections from the nucleus tractus solitarii (NTS) to autonomic control regions of the ventrolateral medulla, particularly the nucleus reticularis rostroventrolateralis (RVL), which serves as a