Abstract：
:The relationship among changes in thirst sensations, blood variables, and differential fluid intake in hypohydrated humans was examined. Seven subjects were hypohydrated by 0%, 3%, 5%, and 7% of their body weight on four separate trials which were systematically randomized between subjects. Hypohydration levels were achieved with a regimen of restricted food and fluid intake and moderate heat-exercise stress. Statistically significant linear and quadratic trends were found for the intensity of several sensations with progressive hypohydration levels. In general, plasma osmolality and renin activity increased and plasma volume decreased with increasing hypohydration levels. During a one hour period of ad lib drinking, all subjects consumed insufficient fluid to rehydrate back to baseline body weights. Using regression analyses, fluid intake was predicted by the magnitude of subjective and physiological indices of hypohydration. Results demonstrate that both hypovolemia and plasma osmolality contribute significantly to fluid intake in hypohydrated humans. The results also indicate that thirst sensations make a substantial contribution to differential fluid intake in humans.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Engell DB,Maller O,Sawka MN,Francesconi RN,Drolet L,Young AJdoi
10.1016/0031-9384(87)90212-5subject
Has Abstractpub_date
1987-01-01 00:00:00pages
229-36issue
2eissn
0031-9384issn
1873-507Xpii
0031-9384(87)90212-5journal_volume
40pub_type
临床试验,杂志文章,随机对照试验abstract：:The effect of exercise on central nervous system function was investigated in relation to the mechanism of calcium-calmodulin-dependent dopamine synthesis in the brain. It is shown here through animal experiments that exercise leads to an increase in the calcium level in the brain. This in turn enhances brain dopamine...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(96)00011-x
更新日期：1996-07-01 00:00:00
abstract：:In this paper we investigated the effect of sex and season on baseline and post-GnRH challenge luteinising hormone (LH) levels in a solitary, seasonally breeding mole-rat. Circulating basal concentrations of luteinising hormone (LH) were found to differ significantly with season in both sexes. However, no significant ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.05.020
更新日期：2006-07-30 00:00:00
abstract：:Minimal hepatic encephalopathy (MHE), which represents the early stage of this condition, is not clinically apparent and is prevalent in up to 80% of patients. The poor outcomes of MHE encouraged us to identify more simple methods for early diagnosis of MHE. To this purpose, we evaluated the contemporary manifestation...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2017.01.033
更新日期：2017-05-01 00:00:00
abstract：:An operant chamber has been developed for studying lever-press conditioning in the green crab Carcinus maenas. In one series of experiments, animals were presented with a single bar and were reinforced with food for every bar press. Performance increased over time and high rates of responding were observed after 2 day...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(90)90311-q
更新日期：1990-08-01 00:00:00
abstract：:Young adult rats housed in the activity-wheel cages and fed only 1 hr daily, have ulcers in the glandular stomach and reveal immunodeficiency. The present study was attempted to investigate how to separate the ulceration and immunodeficiency in order to utilize the activity-stress (A-S) model as an animal model of the...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(83)90174-9
更新日期：1983-05-01 00:00:00
abstract：:Male weanling Sprague-Dawley rats with dorsomedial hypothalamic lesions (DMNL rats) primarily destroying the dorosomedial hypothalamic nuclei (DMN) showed significant hypophagia on lab chow chunks compared to sham-operated controls. When given a choice between lab chow in the form of chunks or powder, both controls an...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(77)90326-2
更新日期：1977-08-01 00:00:00
abstract：OBJECTIVES:To seek insights into the relationship between chewing, appetite, food intake and gut hormones, and to consider potentially useful recommendations to promote benefits of chewing for weight management. MATERIALS AND METHODS:Papers were obtained from two electronic databases (Medline and Cochrane), from searc...
journal_title：Physiology & behavior
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.physbeh.2015.07.017
更新日期：2015-11-01 00:00:00
abstract：:Umami tasting substances, MSG (monosodium glutamate), HG (glutamic acid), LGDE (1-glutamic acid diethyl ester), DLHCA (dl-homocysteic acid), DLAAA (dl-aminoadipic acid) and 5'GMP, were tested on the hamster and the human. Ten mM MSG was routinely used in the hamster as it elicited strong chorda tympani responses. Simi...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90202-y
更新日期：1991-05-01 00:00:00
abstract：:Groups of rats were chronically exposed to a 1.0-g/L caffeine solution for 5, 10, 15 or 20 days. Upon removal of caffeine, rats were given brief exposure to a novel flavour CS (withdrawal CS) followed by 12 days of plain water and then brief exposure to a second flavour CS (neutral CS). Only rats exposed to 20 days of...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.06.007
更新日期：2008-09-03 00:00:00
abstract：:Sleep/wake expression in mice varies predictably with circadian phase. Such circadian rhythms are known to depend on intact suprachiasmatic nuclei (SCN) in the hypothalamus, but the mechanism by which SCN activity modulates sleep/wake expression is unknown. This paper examines the possibility that circadian patterns o...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90375-7
更新日期：1988-01-01 00:00:00
abstract：:Insulin was chronically administered to rats to determine its effect on the daily changes in food intake and body weight. Animals received regular insulin via 14-day osmotic minipumps in doses of 0.0, 0.5, 1.0, 3.0, and 5.0 IU/day treated either with (+GLU) or without glutamic acid (-GLU). Previous studies have shown ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90021-f
更新日期：1991-10-01 00:00:00
abstract：:Thirty-six rats were injected IP with 2DG (0, 250, or 500 mg/kg) at 7-day intervals, once at light onset (7 a.m.) and once at dark onset (7 p.m.), and postinjection food intake was monitored for 24 hours. Five hundred mg/kg 2DG caused food intake to rise above control levels during the first 6 hours of daylight, regar...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(89)90179-0
更新日期：1989-01-01 00:00:00
abstract：:This review article discusses the well-established role of the dorsomedial hypothalamic nucleus (DMN) in feeding, drinking and body weight (BW) regulation. DMN lesions (L) in both weanling and mature rats of both sexes produce hypophagia, hypodipsia and reduced ponderal and linear growth in the presence of normal body...
journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/s0031-9384(02)00756-4
更新日期：2002-07-01 00:00:00
abstract：:Electrical stimulation of the lateral hypothalamus in 2 species of hibernator, dormice (Glis glis) and ground squirrels (Spermophilus lateralis), suggests that induced behaviors may reflect activation of specific neural systems, rather than merely activation of a single central mechanism interacting with internal and ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90111-3
更新日期：1986-01-01 00:00:00
abstract：:The aim of the present study was to determine the influence of thyroid function on the activity and exploratory behaviour of male Wistar rats. Dysthyroidism was induced by adding drugs to their drinking water from the ninth day of gestation. This method is not as stressful as daily thyroxine injections or thyroidectom...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(02)00815-6
更新日期：2002-09-01 00:00:00
abstract：:Motivational audiovisual stimuli such as music and video have been widely used in the realm of exercise and sport as a means by which to increase situational motivation and enhance performance. The present study addressed the mechanisms that underlie the effects of motivational stimuli on psychophysiological responses...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2016.03.001
更新日期：2016-05-01 00:00:00
abstract：:The present study examined the effects of caffeine on memory for supraspan word lists. Twelve groups of male and female college students classified as high or low impulsive received either 0, 2, or 4 mg/kg of caffeine. Female subjects were tested only during the menstrual phase of their cycle and were not taking oral ...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90126-0
更新日期：1987-01-01 00:00:00
abstract：:Disruption of attachment relations in early life is linked to greater vulnerability to depressive illness at later ages. Evidence suggests this process involves stress-induced activation of central inflammatory factors, though the specific mediators and processes involved are not known. We used a guinea pig model in w...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2018.11.040
更新日期：2019-02-01 00:00:00
abstract：:To partly or completely satisfy the increasing demand for insulin, pregnant rats were infused SC with human insulin (2.4 or 4.8 IU/day) from day 14 to day 20 of gestation. Cyclic control rats underwent the same procedure of 6 days of insulin-treatment. During the treatment all groups of rats were hypoglycaemic, but fo...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00080-3
更新日期：1995-09-01 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：BACKGROUND:Defensive coping (DefS) was associated with a vulnerable cardiovascular profile in blacks. The copeptin/vasopressin system is a manifestation of hypothalamic-pituitary-adrenal-axis activity and may act as an acute compensatory mechanism when there is a disruption in volume-loading homeostasis, i.e. when card...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2019.05.012
更新日期：2019-08-01 00:00:00
abstract：:Cold water swim (CWS, 2 degrees C, 3.5 min) decreases the responsiveness to nociceptive stimuli in rats. The influence of various parameters of the CWS condition on stress-induced analgesia were evaluated by means of naltrexone effects. Naltrexone dose-dependently (but significantly only at high doses--21 mg/kg) parti...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90308-1
更新日期：1984-04-01 00:00:00
abstract：:The influence of endogenous opioid peptides (EOPs) on plasma luteinizing hormone (LH) levels in subordinate female highveld mole-rats (Cryptomys hottentotus pretoriae) was investigated to elucidate the physiological mechanisms responsible for inhibiting their gonadotropin-releasing hormone (GnRH) and/or LH release. Th...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2006.02.005
更新日期：2006-05-30 00:00:00
abstract：:Cocaine abuse during adolescence represents a significant health risk due to the potential for both acute and long-term negative physical and psychological sequelae, including increased aggressive behavior. This study examined the effect of adolescent cocaine treatment on flank marking (i.e., a stereotypic motor behav...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(01)00478-4
更新日期：2001-07-01 00:00:00
abstract：:Currently, two gaps exist in the study of early stress response caused by maternal separation (MS) in rodents. Firstly, the influence of brief maternal separation (less than 1 hour) on physiological and behavioral development of offspring is still largely unexplored despite its fundamental and applied value. Secondly,...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.112877
更新日期：2020-08-01 00:00:00
abstract：:Approximately 40-60% of BXSB/MpJ-Yaa mice exhibit neocortical ectopias, which are misplaced clusters of neurons in layer I of cortex. These ectopias are usually located in the prefrontal and/or motor region of cortex in BXSB mice, and are similar in appearance to those found in postmortem analyses of the brains of dys...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(00)00239-0
更新日期：2000-07-01 00:00:00
abstract：:The present study describes changes of response enhancement of hippocampal field potentials in slices of kindled rats using different methods to induce long-lasting potentiation. Eight-week-old male Wistar rats were subjected to pentylenetetrazol (PTZ) kindling induced by intraperitoneal injection of 45 mg/kg once eve...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(97)00167-4
更新日期：1997-10-01 00:00:00
abstract：:We have examined behavioral consequences of genetic deletion of the adenosine A3 receptors in mice. The open field behavior of A3 adenosine receptor knock-out (A3R KO) mice was investigated both under basal conditions and after stimulation with psychostimulants. Adolescent (21 day-old) and adult A3R KO males showed an...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2008.09.018
更新日期：2008-12-15 00:00:00
abstract：:Foxy or Methoxy Foxy (5-methoxy-N,N-di(iso)propyltryptamine hydrochloride; 5-MeO-DIPT) is rapidly gaining popularity among recreational users as a hallucinogenic "designer drug." Unfortunately, much remain unknown about the consequences of its use on neuropsychological development or behavior. During one of two adoles...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2011.01.021
更新日期：2011-05-03 00:00:00
abstract：:The goal of this study was to evaluate the effects of ovarian hormones on female rat ultrasonic vocalizations (USVs). Twenty (10 control and 10 ovariectomized) 3-month-old female rats were recorded in 3 recording conditions (elicitation, dyad, and isolation) over a full estrous cycle or time-matched duration. There we...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.113248
更新日期：2021-02-01 00:00:00
