Abstract：
:The plasma corticosterone levels of rats were examined prior to their morning meal on Days 1, 7 and 20 of a regimen of 1 hr access daily to food mash and water. The relationship between external cues and meal provision was varied by feeding some groups immediately upon room entry each morning, and others with a variable interval 90-min delay. On Day 1, corticosterone levels of the hungry rats were elevated around the time of light onset, and until 90 min following room entry. On Day 7, corticosterone levels increased in response to room entry in the delay-fed rats, but did not increase further in immediately fed rats. These results were interpreted as indicating that low, but nonzero, expectancy of meal availability elevates corticosterone levels. On Day 20, the immediately fed rats showed a dip in corticosterone levels after room entry, responding to cues highly predictive of imminent meal availability. Delay-fed rats no longer showed an elevation to room entry. The relationship between corticosterone level and meal expectancy is essentially curvilinear in the hungry rat. The corticosterone levels are high when there is uncertainty about whether food is coming or not, and low when there is a very high or very low probability that food is coming.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Coover GD,Murison R,Sundberg H,Jellestad F,Ursin Hdoi
10.1016/0031-9384(84)90097-0subject
Has Abstractpub_date
1984-08-01 00:00:00pages
179-84issue
2eissn
0031-9384issn
1873-507Xpii
0031-9384(84)90097-0journal_volume
33pub_type
杂志文章abstract：:Forty-two nondieting adult males were given 8 or 16 oz of lemonade, sweetened to equal intensity with either aspartame or sucrose, or the same volumes of water, or no drink. Subjects were separated into three groups receiving the drinks at different times: with a self-selection lunch, or 30, or 60 min before lunch. Fo...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90254-2
更新日期：1990-07-01 00:00:00
abstract：:Previous research in our laboratory has demonstrated that the C57BL/6J (B/6J) mouse has a predisposition to develop severe obesity if placed on a high-fat diet. In the present study we assessed the role of physical activity in this phenomenon. Obesity-prone B/6J and obesity-resistant A/J mice were placed on one of fou...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)02210-4
更新日期：1996-07-01 00:00:00
abstract：:Social hierarchy plays an important role in the lives of gregarious species. We investigated how social hierarchy between male Mongolian gerbils (Meriones unguiculatus) housed together before sexual maturity affected their scent-marking behavior, endocrine status and physical traits as adults. The social rank between ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.08.001
更新日期：2006-12-30 00:00:00
abstract：:The effect of norepinephrine (NE) injection into the medial preoptic area (MPOA) on plasma glucose was studied in freely moving male rats. The rats were implanted with chronic jugular catheters for blood sampling and with unilateral intracerebral cannulas placed just above the MPOA. Blood samples were taken immediatel...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00362-9
更新日期：1997-02-01 00:00:00
abstract：:Feeding in vertebrates is controlled by a number of appetite stimulating (orexigenic, e.g., orexin and neuropeptide Y, NPY) and appetite suppressing (anorexigenic, e.g., cholecystokinin, CCK and cocaine- and amphetamine-regulated transcript, CART) hormones. Cunners (Tautogolabrus adspersus) survive the winter in shall...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2013.06.022
更新日期：2013-08-15 00:00:00
abstract：:Feather pecking in laying hens is a serious behavioral problem and is often associated with feather eating. There is some evidence that ingested feathers affect gut function. The aim of the present study was to explore whether differences in intestinal microbial metabolites in laying hens with high and low levels of r...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2012.12.017
更新日期：2013-02-17 00:00:00
abstract：:Rats placed as intruders in a long-established colony showed significant elevations of plasma corticosterone after 10-20 minutes of intruding. This rise was prevented by 5 days pretreatment with chlordiazepoxide (5 mg/kg). The rats resident in the colony had significantly higher basal corticosterone concentrations com...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90152-5
更新日期：1984-09-01 00:00:00
abstract：:The relative contribution of androgenic and estrogenic metabolites of testosterone to the activation of sexual behavior was studied in Japanese quail by using inhibitors of testosterone metabolism, antiestrogens and antiandrogens. These compounds were tested in castrated birds whose sexual behavior had been activated ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90429-4
更新日期：1986-10-01 00:00:00
abstract：:The present experiment compared the strengths of taste aversion learning in rats induced by forced swimming in a water pool (5, 15, 30, or 60 min), voluntary running in an activity wheel (15, 30, 60, or 120 min), forced running in a motorized wheel (60 min at the speed of 8 m/min), optional running in the apparatus co...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.04.013
更新日期：2006-07-30 00:00:00
abstract：:Pain threshold was determined in female rats using the tail flick test. Latency to respond depended on the locus of the tail heated, with the most distal sites resulting in the shortest response times (Experiment 1). Tail flick latency also varied according to the time of day, with shorter response times recorded arou...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90040-x
更新日期：1994-04-01 00:00:00
abstract：:Social agonistic behaviour of intact male rats is strongly reduced by the experience of defeat by a dominant male conspecific. Small electrolytic lesions in the corticomedial amygdala strongly affected this behavioural change due to defeat. No effects of the lesions were observed before and during the defeat. Some lea...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90311-1
更新日期：1984-04-01 00:00:00
abstract：:Alteration of the sodium concentration in the cerebrospinal fluid (CSF) of sheep induces reciprocal changes in sodium appetite. Similar studies have now been performed in cattle. Heifers were prepared with a unilateral parotid fistula and guide tubes were implanted in the skull for the introduction of probes into the ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90374-x
更新日期：1987-01-01 00:00:00
abstract：:Using a combination of injection cannula and recording electrode, the effect of 1 microliter of 3 mM verapamil upon the multiunit responses evoked in the peripeduncular nucleus (PPN) by electric stimuli applied to the pudendal nerves in urethane anesthetized proestrous female rats was studied in 9 experiments. It was ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90170-9
更新日期：1988-01-01 00:00:00
abstract：:Adult male rats were intraperitoneally (i.p.) injected with 1.0 microgram/kg amylin at the beginning of the dark phase in 24 h food deprived or undeprived rats, and a computerized system measured feeding behavior. In food deprived rats, amylin reduced the size of the first postdeprivation meal without affecting intram...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)02067-5
更新日期：1995-12-01 00:00:00
abstract：:Olfactory bulbectomy (OBX) in rats produces behavioral, physiological, and neurochemical changes that resemble symptoms of depression in humans. The procedure thus serves as a rodent model of affective disorder. Many of the behavioral effects of OBX resemble psychomotor agitation. The possible role of dysregulation of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.01.003
更新日期：2004-03-01 00:00:00
abstract：:Sufficient oral microelements such as zinc and fully chewing of foods are required to maintain cognitive function despite aging. No knowledge exists about the combination of factors such as zinc deficiency and reduced mastication on learning and memory. Here we show that tooth extraction only in 8-week-old mice did no...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.10.005
更新日期：2015-12-01 00:00:00
abstract：:Avian and mammalian 'rapid eye movement' sleep (REM sleep) resemble each other in several aspects. However, the question of whether REM sleep has a shared evolutionary ancestry in birds and mammals has yet to be thoroughly explored. The brain regions and neurotransmitter systems involved in the generation of mammalian...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2005.12.003
更新日期：2006-03-30 00:00:00
abstract：:The present experiment was designed to determine if intromissions alone could induce a reward state as evaluated by conditioned place preference (CPP). We also compared the rewarding properties of one ejaculation and a morphine injection. We evaluated if intromissions alone could induce CPP in males with one or three ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2009.09.012
更新日期：2009-12-07 00:00:00
abstract：:Ibotenic acid (IBO) is assumed to lesion neurons and to spare fibers of passage. The effects of such lesions in the amygdaloid complex of rats were compared to those of radio frequency lesions (RF) on a passive avoidance task. Both lesions impaired the acquisition of the passive avoidance response. Plasma corticostero...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90119-2
更新日期：1985-02-01 00:00:00
abstract：:Mice adapted to drink a flavored saccharin solution (CS-) paired with intragastric (IG) self-infusions of water rapidly increase their intake of a new flavored solution (CS+) that is paired with IG glucose self-infusions. The present study extends this method to examine post-oral glucose appetition in rats. Food-restr...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2014.04.042
更新日期：2014-06-22 00:00:00
abstract：:Challenging animals with a demanding situation they are able to cope with and where they are rewarded may be a source of positive emotions and possibly of increased welfare. In order to test if this results in changes of immunological parameters and wound healing, 56 pigs (7-20 weeks of age), housed in groups of 8 ani...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.07.001
更新日期：2006-10-30 00:00:00
abstract：:Administration of the opioid agonist, morphine (1 and 10 mg X kg-1), resulted in significant, dose-dependent increases in the ingestive responses of food-deprived slugs, Limax maximus, and in the initiation of feeding in satiated animals. These effects could be blocked by the opiate antagonist, naloxone (1 mg kg-1), w...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90045-3
更新日期：1984-11-01 00:00:00
abstract：:Sheep and goats differ in diet selection, which may reflect different abilities to deal with the ingestion of plant secondary metabolites. Although saliva provides a basis for immediate oral information via sensory cues and also a mechanism for detoxification, our understanding of the role of saliva in the pre-gastric...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2009.07.002
更新日期：2009-10-19 00:00:00
abstract：:Sea bass, a fish species characterized by its dualistic feeding pattern, was investigated to study the synchronizing effect of light and food on the demand-feeding rhythm. Nocturnal and diurnal sea bass, both in groups and individually, were exposed to restricted-feeding (RF) and light-dark (LD) cycles of different pe...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00116-z
更新日期：1995-10-01 00:00:00
abstract：:Studies from the last two decades have pointed to multiple mechanisms of fear. For responding to predators, there is a group of highly interconnected hypothalamic nuclei formed by the anterior hypothalamic nucleus, the ventromedial hypothalamic nucleus and the dorsal premammillary nucleus—the predator-responsive hypot...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2015.10.013
更新日期：2015-12-01 00:00:00
abstract：:Rats with lesions of the dorsomedial nucleus of the hypothalamus (DMN-L) are hypophagic and have reduced linear growth and body weight, but normal body composition. Male Sprague-Dawley rats (170-190 g) housed individually under a 12:12 L:D schedule with lights out at 1430 hr received jugular cannulas, and on return to...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90268-0
更新日期：1989-08-01 00:00:00
abstract：:The efficacy of two different unconditioned stimuli (US) in producing conditioned taste aversion (CTA) was tested in rats after bilateral ibotenic acid (IBO) lesions of the gustatory nucleus of thalamus (TTAx) and the medial and lateral parabrachial nuclei (mPBNx, lPBNx). An initial study determined an equivalent dose...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2005.12.008
更新日期：2006-03-30 00:00:00
abstract：:To identify the source of inhibitory signals from the stomach or intestine that lead to satiation, the effects of 300-g tomato soup preloads on the gastric emptying of a solid meal and on hunger and fullness ratings were examined. Subjects were nine healthy women who each ingested an egg sandwich: 1) with no soup, 2) ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90303-4
更新日期：1994-09-01 00:00:00
abstract：:Balb/c mice were infected with influenza virus PR8 (H1N1) by the intranasal route. At various subsequent times, brain samples were examined for their content of catecholamine and indoleamine metabolites, and plasma corticosterone was measured. Virus infection was associated with a progressive loss of body and thymus w...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90078-4
更新日期：1989-03-01 00:00:00
abstract：:Postcopulatory genital autogrooming was studied in rats following desensitization of the glans penis due to topical application of an anesthetic ointment or to surgical transection of the dorsal penile nerve. These treatments sharply reduced the number of mounts resulting in intromission, but genital autogrooming was ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90228-x
更新日期：1989-05-01 00:00:00
