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The role of the ascending 5-hydroxytryptaminergic pathways in timing behaviour: further observations with the interval bisection task
It is proposed that rats may attain accurate timing under the interval bisection task by moving from one lever to the other during stimulus presentation; this movement may be facilitated by destruction of the 5HTergic pathways. Expand
Effects of desipramine and fluvoxamine on timing behaviour investigated with the fixed-interval peak procedure and the interval bisection task
The failure of desipramine and fluvoxamine to increase the time to peak response rate or the bisection point at doses that significantly altered operant response rate suggests that the effect of these drugs on IRT schedule performance is unlikely to reflect an interaction with timing processes. Expand
Discriminative stimulus properties of indorenate, a serotonin agonist.
(5-HT)IA receptors are of relevance to the stimulus function of indorenate, however, other receptor subtypes may also be involved and other agonists and specific antagonists should be studied before definite conclusions are drawn. Expand
Effects of indorenate on food intake: a comparison with fenfluramine and amphetamine
The present results suggest the participation of serotoninergic, but not dopaminergic mechanisms, in the decrease in food intake produced by indorenate. Expand
Temporal gradient of the discriminative stimulus properties of indorenate.
This study, using adrug discrimination procedure, determined if the stimulus properties of INDO have a temporal course similar to their effects on 5-HT turnover. Expand
Effect of destruction of the 5-hydroxytryptaminergic pathways on the acquisition of temporal discrimination and memory for duration in a delayed conditional discrimination task
The levels of 5HT and 5-hydroxyindoleacetic acid were reduced in the brains of the lesioned rats, but the levels of noradrenaline and dopamine were not altered. Expand
An Eocene Articulated Polyplacophora (Mollusca) from the La Meseta Formation, Antarctica and the Stratigraphy of the Fossil-Bearing Strata
Abstract An exceptionally well-preserved specimen of Leptochiton sp. attached to a brachiopod valve is described from the early Eocene beds of the La Meseta Formation, Seymour Island. It records theExpand
Ophiomorpha irregulaire and associated trace fossils from the Upper Cretaceous of Patagonia, Argentina: Palaeogeographical and ethological significance
Fil: Lopez Cabrera O., Maria Isabel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Austral de Investigaciones Cientificas; Argentina