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Author Snycerski, S.; Laraway, S.; Poling, A. url  openurl
  Title Response acquisition with immediate and delayed conditioned reinforcement Type Journal Article
  Year 2005 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 68 Issue 1 Pages 1-11  
  Keywords Response acquisition; Conditioned reinforcement; Delayed reinforcement; Secondary reinforcement; Rats  
  Abstract Groups comprising eight rats initially were exposed to response-independent water deliveries, then to conditions under which a lever-press response raised an empty dipper immediately or after a resetting delay of 15, 30, or 45 s. When their performance was compared to that of control animals using a 90% confidence level, six rats in the immediate-reinforcement group met the primary criterion for response acquisition during a single 6-h session; 4, 4, and 3 did so in the 15, 30, and 45 s delay groups, respectively. Similar evidence of acquisition was obtained when a 95% confidence level was used. With a 99% confidence level, however, evidence of acquisition was not compelling. Although these data appear to provide the first demonstration of response acquisition in the absence of handshaping or autoshaping under conditions where the putative reinforcer is both conditioned and delayed, they also demonstrate that whether response acquisition occurs depends, in part, on how it is defined.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3600  
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Author Byrne, T.; Sutphin, G.; Poling, A. url  openurl
  Title Acquisition, extinction, and reacquisition of responding with delayed and immediate reinforcement Type Journal Article
  Year 1998 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 43 Issue 1 Pages 97-101  
  Keywords Acquisition; Delayed reinforcement; Extinction; Rats  
  Abstract The present study investigated acquisition, extinction, and reacquisition of free-operant responding when rats' lever presses produced water after a resetting delay of 0, 10, 20, or 30 s. Results indicated that: (1) responding was acquired rapidly at all delays without shaping or autoshaping; (2) resistance to extinction was directly related to delay length and inversely related to intermittency of reinforcement; (3) responding acquired with delayed reinforcement recovered less rapidly from extinction, and was less efficient, than responding acquired with immediate reinforcement. Comparing these results with those of studies using discrete-trials and free-operant procedures with no reinforcement delay suggest that the specific conditions under which behavior is maintained determines, in part, the behavioral effects of delay and intermittency of reinforcement.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3601  
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Author Thor, D.H.; Holloway, W.R. url  doi
openurl 
  Title Social memory of the male laboratory rat Type Journal Article
  Year 1982 Publication Journal of Comparative and Physiological Psychology Abbreviated Journal J. Comp. Physiol. Psychol.  
  Volume 96 Issue 6 Pages 1000-1006  
  Keywords duration of social-investigatory behavior, measure of conspecific recognition &; social memory, male rats  
  Abstract Used duration of social-investigatory behavior by 36 mature male Long-Evans rats as a measure of individual recognition in 5 experiments to assess social memory. In Exp I, the duration of social investigation during a 2nd exposure to the same juvenile (n[en space]=[en space]12) was directly related to the length of the interexposure interval. In Exp II, Ss were exposed to the same or different juvenile 10 min after an initial 5-min exposure to a novel juvenile; reexposure to the same juvenile elicited significantly less social investigation than an exposure to a different juvenile. Exps III and IV demonstrated that following a 5-min introductory exposure, social memory of the juvenile was relatively brief in comparison with that of mature Ss. Exp V revealed a retroactive interference effect on recently acquired memory for an individual: 12 mature Ss exposed to interpolated social experience engaged in significantly longer investigation of a juvenile than those with no interpolated social experience. The combined results suggest that (1) the rat normally engages in spontaneous learning of individual identity and (2) social memory may be a significant aspect of complex social interactions. (16 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0021-9940 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5133  
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Author Gil, M.; Bhatt, R.; Picotte, K.B.; Hull, E.M. url  openurl
  Title Sexual experience increases oxytocin receptor gene expression and protein in the medial preoptic area of the male rat Type Abstract
  Year 2013 Publication Psychoneuroendocrinology Abbreviated Journal Psychoneuroendocrinology  
  Volume 38 Issue 9 Pages 1688-1697  
  Keywords Oxytocin; Oxytocin receptor; Sexual behavior; Sexual experience; Medial preoptic area; Hypothalamus; Rats  
  Abstract Oxytocin (OT) promotes social and reproductive behaviors in mammals, and OT deficits may be linked to disordered social behaviors like autism and severe anxiety. Male rat sexual behavior is an excellent model for OT regulation of behavior, as its pattern and neural substrates are well characterized. We previously reported that OT microinjected into the medial preoptic area (MPOA), a major integrative site for male sexual behavior, facilitates copulation in sexually experienced male rats, whereas intra-MPOA injection of an OT antagonist (OTA) inhibits copulation. In the present studies, copulation on the day of sacrifice stimulated OTR mRNA expression in the MPOA, irrespective of previous sexual experience, with the highest levels observed in first-time copulators. In addition, sexually experienced males had higher levels of OTR protein in the MPOA than sexually naïve males and first-time copulators. Finally, intra-MPOA injection of OT facilitated mating in sexually naive males. Others have reported a positive correlation between OT mRNA levels and male sexual behavior. Our studies show that OT in the MPOA facilitates mating in both sexually naive and experienced males, some of the behavioral effects of OT are mediated by the OTR, and sexual experience is associated with increased OTR expression in the MPOA. Taken together, these data suggest a reciprocal interaction between central OT and behavior, in which OT facilitates copulation and copulation stimulates the OT/OTR system in the brain.  
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  Publisher Pergamon Press. Place of Publication Editor  
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  Series Volume Series Issue Edition  
  ISSN 0306-4530 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ S0306-4530(13)00040-1 Serial 5724  
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Author Schmoldt, A.; Benthe, H.F.; Haberland, G. openurl 
  Title Digitoxin metabolism by rat liver microsomes Type Journal Article
  Year 1975 Publication Biochemical pharmacology Abbreviated Journal Biochem Pharmacol  
  Volume 24 Issue 17 Pages 1639-1641  
  Keywords Animals; Chromatography, Thin Layer; Digitoxigenin/metabolism; Digitoxin/*metabolism; Hydroxylation; Male; Microsomes, Liver/*metabolism; NADP/metabolism; Rats; Time Factors  
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  Language (up) English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0006-2952 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:10 Approved no  
  Call Number Admin @ knut @ Serial 20  
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Author Alexander, F.; Davies, M.E. openurl 
  Title Studies on vitamin B12 in the horse Type Journal Article
  Year 1969 Publication The British veterinary journal Abbreviated Journal Br. Vet. J.  
  Volume 125 Issue 4 Pages 169-176  
  Keywords Animals; Biological Assay; Cattle; Chickens; Feces/analysis; Horses/*metabolism; Humans; Lactobacillus/metabolism; Rabbits; Rats; Sheep; Urine/analysis; Vitamin B 12/*analysis  
  Abstract  
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  ISSN 0007-1935 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:5814055 Approved no  
  Call Number refbase @ user @ Serial 116  
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Author Weik, H.; Altmann, J. openurl 
  Title The effect of L(+)-lactate on rat and horse adipose tissue in vitro Type Journal Article
  Year 1972 Publication Zentralblatt fur Veterinarmedizin. Reihe A Abbreviated Journal Zentralbl Veterinarmed A  
  Volume 19 Issue 6 Pages 514-518  
  Keywords Adipose Tissue/analysis/*drug effects; Animals; Fatty Acids, Nonesterified; Glycerol/metabolism; Horses; Lactates/*pharmacology; Lipid Metabolism; Male; Rats  
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  Series Volume Series Issue Edition  
  ISSN 0514-7158 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:4626300 Approved no  
  Call Number refbase @ user @ Serial 132  
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Author Blaisdell, A.P.; Sawa, K.; Leising, K.J.; Waldmann, M.R. doi  openurl
  Title Causal reasoning in rats Type Journal Article
  Year 2006 Publication Science (New York, N.Y.) Abbreviated Journal Science  
  Volume 311 Issue 5763 Pages 1020-1022  
  Keywords Animals; *Association Learning; Bayes Theorem; *Cognition; Comprehension; Forecasting; Male; Rats; Rats, Long-Evans  
  Abstract Empirical research with nonhuman primates appears to support the view that causal reasoning is a key cognitive faculty that divides humans from animals. The claim is that animals approximate causal learning using associative processes. The present results cast doubt on that conclusion. Rats made causal inferences in a basic task that taps into core features of causal reasoning without requiring complex physical knowledge. They derived predictions of the outcomes of interventions after passive observational learning of different kinds of causal models. These competencies cannot be explained by current associative theories but are consistent with causal Bayes net theories.  
  Address Department of Psychology, University of California, Los Angeles, CA 90095, USA. blaisdell@psych.ucla.edu  
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  Series Volume Series Issue Edition  
  ISSN 1095-9203 ISBN Medium  
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  Notes PMID:16484500 Approved no  
  Call Number refbase @ user @ Serial 154  
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Author Beckers, T.; Miller, R.R.; De Houwer, J.; Urushihara, K. doi  openurl
  Title Reasoning rats: forward blocking in Pavlovian animal conditioning is sensitive to constraints of causal inference Type Journal Article
  Year 2006 Publication Journal of experimental psychology. General Abbreviated Journal J Exp Psychol Gen  
  Volume 135 Issue 1 Pages 92-102  
  Keywords Animals; *Association Learning; *Cognition; *Conditioning, Classical; Cues; Fear; Female; Inhibition (Psychology); Male; Motivation; *Problem Solving; Rats; Rats, Sprague-Dawley  
  Abstract Forward blocking is one of the best-documented phenomena in Pavlovian animal conditioning. According to contemporary associative learning theories, forward blocking arises directly from the hardwired basic learning rules that govern the acquisition or expression of associations. Contrary to this view, here the authors demonstrate that blocking in rats is flexible and sensitive to constraints of causal inference, such as violation of additivity and ceiling considerations. This suggests that complex cognitive processes akin to causal inferential reasoning are involved in a well-established Pavlovian animal conditioning phenomenon commonly attributed to the operation of basic associative processes.  
  Address Department of Psychology, Binghamton University, State University of New York, NY, USA. tom.beckers@psy.kuleuven.be  
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  ISSN 0096-3445 ISBN Medium  
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  Notes PMID:16478318 Approved no  
  Call Number refbase @ user @ Serial 155  
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Author Zentall, T.R. doi  openurl
  Title Mental time travel in animals: a challenging question Type Journal Article
  Year 2006 Publication Behavioural processes Abbreviated Journal Behav. Process.  
  Volume 72 Issue 2 Pages 173-183  
  Keywords Animals; *Behavior, Animal; Columbidae; Concept Formation; Conditioning, Operant; *Imagination; *Memory; Mental Recall; Planning Techniques; Rats; *Time Perception; Transfer (Psychology)  
  Abstract Humans have the ability to mentally recreate past events (using episodic memory) and imagine future events (by planning). The best evidence for such mental time travel is personal and thus subjective. For this reason, it is particularly difficult to study such behavior in animals. There is some indirect evidence, however, that animals have both episodic memory and the ability to plan for the future. When unexpectedly asked to do so, animals can report about their recent past experiences (episodic memory) and they also appear to be able to use the anticipation of a future event as the basis for a present action (planning). Thus, the ability to imagine past and future events may not be uniquely human.  
  Address Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu  
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  Series Volume Series Issue Edition  
  ISSN 0376-6357 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16466863 Approved no  
  Call Number refbase @ user @ Serial 218  
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