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1. The effects of histamine and agents at histamine receptors on spontaneous and 100 mM K(+)-evoked release of acetylcholine, measured by microdialysis from the cortex of freely moving, rats, and on cognitive tests are described. 2. Local administration of histamine (0.1-100 microM) failed to affect spontaneous but inhibited 100 mM K(+)-stimulated release… (More)
Cortical perfusion with GABA agonists and antagonists modulates the spontaneous release of cortical acetylcholine and GABA in freely moving rats. Twenty-four hours after implantation of a dialysis fibre, cerebral cortex spontaneously released acetylcholine (3.8 +/- 0.2 pmol/10 min) and GABA (6.6 +/- 0.4 pmol/10 min) at a stable rate. Local administration of… (More)
Through the activation of cortical histamine H3 receptors, histamine has been shown to inhibit acetylcholine release from rat cortex in vivo . This effect is indirect, mediated by cortical GABA interneurons . However, cholinergic nucleus basalis magnocellularis (NBM) neurons, which provide cholinergic innervation to the cortex , are excited by… (More)
In the brain, H 3 receptors function predominantly as presynaptic inhibitory receptors. Indeed, their activation moderates the in vitro-release of tritiated histamine , serotonin , noradrenaline  and acetylcholine . In vivo, a modulation of hippocampal acetylcholine release through H 2 receptors has been suggested . We now report that… (More)
Article history: Received 26 February 2009 Revised 21 September 2009 Available online 2 February 2010 Communicated by W. Cary Huffman
We consider the problem of finding the number of permutation nonequivalent classical irreducible maximal Goppa codes having fixed parameters q, n and r from a group theory point of view.
In this paper a full categorization of irreducible classical Goppa codes of degree 4 and length 9 is given. It is an interesting example in the context of find the number of permutation non-equivalent classical irreducible maximal Goppa codes having fixed parameters q, n and r using group theory techniques.