Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 140 for “"locomotor activity"”.
-
Locomotor activity does not predict individual differences in morphine self-administration in rats
… study was to evaluate the relationship between locomotor activity in a novel environment, a preclinical model of sensation-seeking, and individual differences in acquisition of i.v. morphine self-administration (SA) in rats. A secondary goal was to evaluate the relationship between activity and …
-
Alcohol-induced Locomotor Activity in Zebrafish is Mediated by Activation of the Dopaminergic System
… treatment options being limited. Alcoholâ s locomotor stimulant effect in animals is thought to parallel the euphoric effects of alcohol consumption in humans, yet the mechanisms underlying this behavioural response is not completely understood. Using zebrafish, we demonstrated a positive …
-
Evaluation of age differences in locomotor activity following psychostimulant administration in adolescent versus adult mice
… adolescent rodents are commonly observed to locomotor stimulate to a lesser magnitude than that of adults. However, recently conflicting reports have been published showing adolescents to stimulate equally or greater than adults. The cause for variability in the literature is unclear, but may …
-
The Effect of Acute Low pH on Feeding and Locomotor Activity of Larval Fathead Minnows, Pimephales promelas
… reduced reproductive success, changes in locomotor and feeding behavior and even death. Juveniles and adults have been the primary focus of research. However, the larval stage is potentially the most sensitive to toxicity. It is also important ontogenetically as several crucial development …
-
The development and assessment of an automated biological monitoring system using crayfish locomotor activity to detect toxic stress
… developed to continuously monitor spontaneous locomotor activity of eight crayfish. Electric potentials generated by muscular movements of untethered crayfish were detected by external electrodes, amplified, digitized, and analyzed by a hybrid computer network. A microcomputer evaluated the …
-
The Effects of Early Postnatal PCP Administration on Performance in Locomotor Activity, Reference Memory, and Working Memory Tasks in C57BL/6 Mice
… days 5-15. After weaning, pups were assessed in locomotor activity, a reference memory task in the Morris water maze, and a spatial delayed alternation task in the T-maze. Additionally, pups were subjected to a pharmacological challenge with PCP in the delayed alternation task. In males, No …
-
Seasonal regulation of the circadian rhythms of behavioural temperature selection and locomotor activity in Australian sleepy lizards (Tiliqua rugosa, gray; reptilia: scincidae)
… seasonal adjustments in the body temperature and locomotoractivity patterns in the Australian sleepy lizard, Tiliqua rugosa (Gray 1827). The first component of this study investigated whether daily rhythms of behavioural thermoregulation and locomotor activity that T. rugosa displays in the field …
-
Prenatal Intravenous Nicotine Exposure: Increased Motivation For Methamphetamine Self-Administration, Altered Methamphetamine-Induced Locomotor Activity and Brain-Derived Neurotrophic Factor Protein Levels In Adult Rats
<p>The age at which drug use begins is a critical factor in predicting future drug use liability. It is uncommon for individuals older than 25 to initiate drug use and progress to drug abuse. Thus, adolescence is a developmental period of considerable importance for investigating drug abuse …
-
Effects of blockade of muscarinic receptors in the ventral tegmental area : attenuation of cocaine reward, but enhancement of locomotor activity and dopamine overflow in the nucleus accumbens
… locomotion was the predominant effect on activity induced by the administration of atropine into the ventral tegmental area. Atropine sulphate initially induced a period of immobility that did not occur following the administration of atropine methyl nitrate. Microdialysis techniques were …
-
Developmental Effects of Cortisol on the Stress Response and Behaviour in Zebrafish
… will compromise the larval stress response and locomotor activity. Maternal stress and the attendant rise in cortisol levels led to excess cortisol deposition, but only transiently in the embryos. This was kept in check by cortisol-induced stimulation of 11βHSD2, a cortisol-degrading enzyme, in …
-
Effects of oral delta-9-tetrahydrocannibinol (THC) administration on motor activity and anxiety-like behavior in adolescent and adult Sprague-Dawley rats of both sexes
… THC may produce an anxiogenic effect and reduce locomotor activity in rats, but it is unclear if this also occurs following volitional, oral intake of THC. Here, we used adolescent and adult rats of both sexes to determine if oral THC would alter locomotor activity in an open-field arena (OFA) …
-
Ossitocina nella Sostanza Nera del ratto: azione sull'attività locomotoria e interazione con i neuroni dopaminergici, glutammatergici e GABAergici nigrali
… oxytocin exerts also a modulatory role on locomotor activity, but little is known about the cerebral areas in which oxytocin might act to produce this effect. The substantia nigra, a mesencephalic structure which is part of the basal ganglia, a group of interconnected nuclei involved in …
-
Effect of light on the circadian activity rhythm of the slow loris, Nycticebus coucang
<p>In this study, the locomotor activity of a nocturnal prosimian, the slow loris (<em>Nycticebus coucang</em>), was monitored under an experimentally varied light regime. During the process of reversing their day-night cycle, activity was monitored for a light-dark cycle roughly correlating to the …
-
The effects of intra-dorsal raphe administration of strychnine on rat behaviour and its interactions with ethanol
… in the open field, elevated plus-maze and locomotor activity box. The intracerebral microinjection of strychnine into the dorsal raphe nucleus had no effect on anxiety-like behaviours or locomotor activity in animals exposed to the open field. The elevated plus-maze methodology was …
-
ANTIDEPRESSANT EFFECTS OF THE NTS1 AGONIST PD149163 IN THE FORCED SWIM TEST
… the forced swim test without increasing general locomotor activity as measured in an open field test. The present study sought to examine the effects of the neurotensin NTS<sub>1</sub> receptor agonist PD149163 and the tricyclic antidepressant drug imipramine on immobility in the forced swim test …
-
Effects of diet composition and length of feeding restriction on the locomotor rhythms of Mus musculus
Changes in locomotor rhythms of Mus musculus as a response to combinations of lighting and feeding cues were quantitatively assessed in this study. Time allowed for feeding was varied (3, 5, and 7 hours) to examine effect of different zeitgeber strengths on locomotor pattens. The effect of temporal …
Page 1 of 7