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Canadian journal of ophthalmology. Journal canadien d'ophtalmologie Journal

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The shape of the sweetness function remained unaltered when different concentration ranges of sucrose were evaluated at different temperatures by either one of two psychophysical methods: magnitude estimation or magnitude matching. Results of the sweetness-temperature interaction...
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Female rats were given daily tests for mounting behavior and lordosis behavior from the day of vaginal opening until Day 115. Regular mounting behavior appeared when the females had established adult behavioral estrous cycles of 4 days duration. Females reared in social isolation...
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The present study investigated the application of female rats with activity stress as an animal model for anorexia nervosa. Young female rats were singly housed in activity-wheel cages with food-restricted schedule (2, 3, or 4 h of food availability per day) for 3 weeks. Estrous ...
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Captopril, an inhibitor of angiotensin converting enzyme which prevents conversion of angiotensin I (AI) to angiotensin II (AII), reduces the polydipsia of Brattleboro rats with hereditary hypothalamic diabetes insipidus (DI). In the present study, captopril (480 mg/kg-day) reduc...
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Rats were used to examine the effects, upon a conditioned aversion to cold drinking water, of electroconvulsive shock (ECS) delivered during the delay between cue and unconditioned stimulus. An injection of LiCl (US) 30 min after ingestion of novel cold water (CS) produced a reli...
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This study used the biological model of experimental hypoglycaemia to examine the effect of a manipulation in mood-state on appraisal. Controlled hypoglycaemia was achieved using the hyperinsulinaemic glucose clamp technique. Mood, appraisal, and personality traits were assessed ...
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The bitter rejection response consists of a suite of withdrawal reflexes and negative affective responses. It is generally assumed to have evolved as a way to facilitate avoidance of foods that are poisonous because they usually taste bitter to humans. Using previously published ...
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Mating-induced inhibition of sexual receptivity was examined in ovariectomized, estrogen (E) treated and estrogen plus progesterone (E + P) treated hamsters given 10 min of exposure to male mounting stimulation alone or to mounts, intromissions, and ejaculations at eight hourly i...
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Tonic immobility (TI) is an innate defensive response exhibited by prey when physical contact with a predator is prolonged and inescapable. This defensive response is able to activate analgesia mechanisms; this activation has adaptive value because, during an attack by a predator...
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Bioelectric signals related to ventilatory movements in fish can be detected via externally located electrodes. In this study, a technique to continuously monitor the electric ventilatory signals in free-swimming zebrafish was developed. This technique was applied to monitoring v...
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Rats maintained at 80 percent ad lib feeding body weight became hyperdipsic during 60 min FI-1 min food reinforcement sessions in standard rat operant test chambers. Animals were then allowed to return gradually to their ad lib feeding weight and were tested again in the same exp...
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Fish are useful animal models in research and have been employed in developing new pharmacological approaches. This study aimed to establish the use of silver catfish (Rhamdia quelen) as an animal model to evaluate antinociceptive activity. Initially, different concentrations of ...
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In humans, prior alcohol use is linked with impulsivity and impaired decision-making, but the nature of this relationship is unclear. In a previous study in rats, we found that prior alcohol access led to over-responding in go/no-go discrimination training, but had no effect on d...
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Male and female rats with ad lib access to separate sources of carbohydrate, fat, and protein were implanted with minipumps providing one of three dosages (0.0, 40.0, or 80.0 mg/kg/day) of phenylpropanolamine (PPA) for 2 weeks. Body weight, macronutrient intake, and water consump...
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When administered intracerebroventricularly (ICV) in rats, corticotropin-releasing factor (CRF) possesses arousing and anxiogenic properties, which may be found reflected in autonomic and behavioral activation. As these responses are dependent on dose and situation, ICV-injected ...
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Refinetti, R. Body temperature and behavior of tree shrews and flying squirrels in a thermal gradient. Physiol Behav 63(4) 517–520, 1998. The daily rhythms of body temperature, temperature selection, and locomotor activity of tree shrews and flying squirrels were studied in a the...
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The assessment of cortisol in saliva has been proven a valid and reliable reflection of the respective unbound hormone in blood. In the present study, a standard dexamethasone suppression test (DST) with measures of salivary cortisol levels was performed in bulimic women without ...
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This study examined the effects on copulation-related and agonistic behaviors of repeated DMPA (depo-Provera) treatment of adult females in a heterosexual island colony of stumptail macaques (Macaca arctoides). Comparison of mean rates revealed a decrease in male approach to fema...
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The human ability to localize odorants has been examined in a number of studies, but the findings are contradictory. In the present study we investigated the human sensitivity and ability to localize hydrogen sulphide (H(2)S), which in low concentrations stimulates the olfactory ...
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The aim of the present study was to test the hypothesis that vesicular glutamate transporter 3 (VGluT3) deficiency is associated with cognitive impairments. Male VGluT3 knockout (KO) and wild type (WT) mice were exposed to a behavioral test battery covering paradigms based on spo...
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