Records |
Author |
Boughner, R.L.; Papini, M.R. |
Title |
Appetitive latent inhibition in rats: preexposure performance does not predict conditioned performance |
Type |
Journal Article |
Year |
2006 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
72 |
Issue |
1 |
Pages |
42-51 |
Keywords |
Animals; *Appetitive Behavior; Association Learning; *Conditioning, Classical; *Habituation, Psychophysiologic; Individuality; *Inhibition (Psychology); Male; Motivation; Rats; Rats, Wistar; *Reaction Time |
Abstract |
Nonreinforced preexposure to a conditioned stimulus impairs subsequent conditioning with that stimulus. The goal of these studies was to assess the extent to which acquisition performance could be predicted from preexposure performance using a correlational approach. For both preexposure and autoshaping, four measures of performance were computed, including overall average lever pressing, lever pressing in the initial session, percentage change in lever pressing, and slopes. These measures were correlated in a large sample of rats trained in an autoshaping situation. None of the three measures of autoshaping performance was consistently predicted by any of the three measures of preexposure performance. These results are consistent with the view that latent inhibition is not reducible to long-term habituation. |
Address |
Department of Psychology, Texas Christian University, TX 76129, United States |
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ISSN |
0376-6357 |
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PMID:16406375 |
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no |
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Equine Behaviour @ team @ |
Serial |
4147 |
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Author |
Manns, J.R.; Clark, R.E.; Squire, L.R. |
Title |
Standard delay eyeblink classical conditioning is independent of awareness |
Type |
Journal Article |
Year |
2002 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
28 |
Issue |
1 |
Pages |
32-37 |
Keywords |
Aged; *Awareness; *Blinking; *Conditioning, Classical; Humans |
Abstract |
P. F. Lovibond and D. R. Shanks (2002) suggested that all forms of classical conditioning depend on awareness of the stimulus contingencies. This article considers the available data for eyeblink classical conditioning, including data from 2 studies (R. E. Clark, J. R. Manns, & L. R. Squire, 2001; J. R. Manns, R. E. Clark, & L. R. Squire, 2001) that were completed too recently to have been considered in their review. In addition, in response to questions raised by P. F. Lovibond and D. R. Shanks, 2 new analyses of data are presented from studies published previously. The available data from humans and experimental animals provide strong evidence that delay eyeblink classical conditioning (but not trace eyeblink classical conditioning) can be acquired and retained independently of the forebrain and independently of awareness. This conclusion applies to standard conditioning paradigms; for example, to single-cue delay conditioning when a tone is used as the conditioned stimulus (CS) and to differential delay conditioning when the positive and negative conditioned stimuli (CS+ and CS-) are a tone and white noise. |
Address |
Department of Psychology, University of California, San Diego, USA |
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English |
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ISSN |
0097-7403 |
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Notes |
PMID:11868232 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2769 |
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Author |
Stoet, G.; Snyder, L.H. |
Title |
Task preparation in macaque monkeys ( Macaca mulatta) |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
2 |
Pages |
121-130 |
Keywords |
Animals; *Cognition; Conditioning, Classical; Macaca mulatta/*psychology; Male; Reaction Time; Task Performance and Analysis; Visual Perception |
Abstract |
We investigated whether macaque monkeys possess the ability to prepare abstract tasks in advance. We trained two monkeys to use different stimulus-response (S-R) mappings. On each trial, monkeys were first informed with a visual cue which of two S-R mapping to use. Following a delay, a visual target was presented to which they would respond with a left or right button-press. We manipulated delay time between cue and target and found that performance was faster and more accurate with longer delays, suggesting that monkeys used the delay time to prepare each task in advance. |
Address |
Department of Anatomy and Neurobiology, Washington University School of Medicine, 660 S Euclid Ave., Box 8108, St. Louis, MO 63110, USA. stoet@pcg.wustl.edu |
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1435-9448 |
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Notes |
PMID:12721788 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2572 |
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Author |
Blaisdell, A.P.; Cook, R.G. |
Title |
Integration of spatial maps in pigeons |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
1 |
Pages |
7-16 |
Keywords |
Animals; Appetitive Behavior/physiology; Association Learning/*physiology; Columbidae/*physiology; Conditioning, Classical/physiology; *Cues; Problem Solving/*physiology; Space Perception/*physiology; Spatial Behavior/physiology |
Abstract |
The integration of spatial maps in pigeons was investigated using a spatial analog to sensory preconditioning. The pigeons were tested in an open-field arena in which they had to locate hidden food among a 4x4 grid of gravel-filled cups. In phase 1, the pigeons were exposed to a consistent spatial relationship (vector) between landmark L (a red L-shaped block of wood), landmark T (a blue T-shaped block of wood) and the hidden food goal. In phase 2, the pigeons were then exposed to landmark T with a different spatial vector to the hidden food goal. Following phase 2, pigeons were tested with trials on which they were presented with only landmark L to examine the potential integration of the phase 1 and 2 vectors via their shared common elements. When these test trials were preceded by phase 1 and phase 2 reminder trials, pigeons searched for the goal most often at a location consistent with their integration of the L-->T phase 1 and T-->phase 2 goal vectors. This result indicates that integration of spatial vectors acquired during phases 1 and 2 allowed the pigeons to compute a novel L-->goal vector. This suggests that spatial maps may be enlarged by successively integrating additional spatial information through the linkage of common elements. |
Address |
Department of Psychology, University of California, Los Angeles, 1285 Franz Hall, Box 951563, Los Angeles, CA 90095-1563, USA. blaisdell@psych.ucla.edu |
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1435-9448 |
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Notes |
PMID:15221636 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2521 |
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Author |
Gazit, I.; Goldblatt, A.; Terkel, J. |
Title |
The role of context specificity in learning: the effects of training context on explosives detection in dogs |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
3 |
Pages |
143-150 |
Keywords |
Animals; *Association Learning; Conditioning, Classical; *Discrimination Learning; Dogs; *Environment; *Generalization, Stimulus; *Smell |
Abstract |
Various experiments revealed that if an animal learns a stimulus-response-reinforcer relationship in one context and is then tested in another context there is usually a lessening of stimulus control, and the same discriminative stimuli that reliably controlled the behavior in the first context will have less effect in the new context. This reduction in performance is known as the “context shift effect.” The effect of changing context on the probability of detecting explosives was investigated in seven highly trained explosives detection dogs (EDDs). In experiment 1 the dogs were trained alternately on path A, which always had five hidden explosives, and on a very similar path B, which never had any explosives. Within a few sessions the dogs showed a significant decrease in search behavior on path B, but not on path A. In experiment 2 the same dogs were trained only on path B with a target density of one explosive hidden every 4th day. The probability of the dogs now detecting the explosive was found to be significantly lower than in experiment 1. In experiment 3 the effect of the low target density as used in experiment 2 was investigated on a new but very similar path C. Both the detection probability for the one explosive every 4th day on the new path and the motivation to search were significantly higher than found in experiment 2. Finally, in experiment 4, an attempt was made to recondition the dogs to search on path B. Although trained for 12 daily sessions with one explosive hidden every session, the dogs failed to regain the normal levels of motivation they had shown on both new paths and on the paths that they knew usually contained explosives. The findings reveal that even a very intensively trained EDD will rapidly learn that a specific stretch of path does not contain explosives. The dog will then be less motivated to search and will miss newly placed targets. This learning is specific to the formerly always-clean path and is to some extent irreversible. However, the dog will search and detect normally on new paths even if they are very similar to the always-clean path. The data are discussed in terms of variables affecting renewal. The results suggest that following training designed to make a behavior “context independent,” any extinction training will not generalize beyond that specific context used during the extinction training. In addition, if the behavior is extinguished in a specific context, it will be very difficult to restore that behavior in that context. These conclusions should be considered by anyone attempting to extinguish well-established trans-context behaviors. |
Address |
Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 69978, Israel. iritgazi@post.tau.ac.il |
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1435-9448 |
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Notes |
PMID:15449101 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2509 |
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Author |
Werner, C.W.; Tiemann, I.; Cnotka, J.; Rehkamper, G. |
Title |
Do chickens (Gallus gallus f. domestica) decompose visual figures? |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
2 |
Pages |
129-140 |
Keywords |
Animals; *Chickens; Conditioning, Classical; *Discrimination Learning; Female; *Pattern Recognition, Visual; Photic Stimulation; *Visual Perception |
Abstract |
To investigate whether learning to discriminate between visual compound stimuli depends on decomposing them into constituting features, hens were first trained to discriminate four features (red, green, horizontal, vertical) from two dimensions (colour, line orientation). After acquisition, hens were trained with compound stimuli made up from these dimensions in two ways: a separable (line on a coloured background) stimulus and an integral one (coloured line). This compound training included a reversal of reinforcement of only one of the two dimensions (half-reversal). After having achieved the compound stimulus discrimination, a second dimensional training identical to the first was performed. Finally, in the second compound training the other dimension was reversed. Two major results were found: (1) an interaction between the dimension reversed and the type of compound stimulus: in compound training with colour reversal, separable compound stimuli were discriminated worse than integral compounds and vice versa in compound training with line orientation reversed. (2) Performance in the second compound training was worse than in the first one. The first result points to a similar mode of processing for separable and integral compounds, whereas the second result shows that the whole stimulus is psychologically superior to its constituting features. Experiment 2 repeated experiment 1 using line orientation stimuli of reversed line and background brightness. Nevertheless, the results were similar to experiment 1. Results are discussed in the framework of a configural exemplar theory of discrimination that assumes the representation of the whole stimulus situation combined with transfer based on a measure of overall similarity. |
Address |
C. and O. Vogt Institute of Brain Research, Heinrich Heine University Dusseldorf, Universitatsstr. 1, 40225, Dusseldorf, Germany. wernerc@uni-duesseldorf.de |
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1435-9448 |
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PMID:15490291 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2503 |
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Author |
Cole, P.D.; Adamo, S.A. |
Title |
Cuttlefish (Sepia officinalis: Cephalopoda) hunting behavior and associative learning |
Type |
Journal Article |
Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
8 |
Issue |
1 |
Pages |
27-30 |
Keywords |
Animals; *Appetitive Behavior; *Association Learning; *Conditioning, Classical; Female; Male; *Mollusca; Photic Stimulation; *Predatory Behavior |
Abstract |
Because most learning studies in cephalopods have been performed on octopods, it remains unclear whether such abilities are specific to octopus, or whether they correlate with having a larger and more centrally organized brain. To investigate associative learning in a different cephalopod, six sexually mature cuttlefish (Sepia officinalis) participated in a counterbalanced, within-subjects, appetitive, classical conditioning procedure. Two plastic spheres (conditioned stimuli, CSs), differing in brightness, were presented sequentially. Presentation of the CS+ was followed 5 s later by a live feeder fish (unconditioned stimulus, US). Cuttlefish began to attack the CS+ with the same type of food-acquisition seizures used to capture the feeder fish. After seven blocks of training (42 presentations of each CS) the difference in seizure probability between CS+ and CS- trials more than doubled; and was found to be significantly higher in late versus early blocks. These results indicate that cuttlefish exhibit autoshaping under some conditions. The possible ecological significance of this type of learning is briefly discussed. |
Address |
Department of Psychology, Dalhousie University Halifax, Nova Scotia, Canada |
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1435-9448 |
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PMID:15592760 |
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no |
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Equine Behaviour @ team @ |
Serial |
2500 |
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Author |
Cook, M.; Mineka, S.; Wolkenstein, B.; Laitsch, K. |
Title |
Observational conditioning of snake fear in unrelated rhesus monkeys |
Type |
Journal Article |
Year |
1985 |
Publication |
Journal of abnormal psychology |
Abbreviated Journal |
J Abnorm Psychol |
Volume |
94 |
Issue |
4 |
Pages |
591-610 |
Keywords |
Animals; *Conditioning, Classical; *Fear; Female; Macaca mulatta; Male; Snakes |
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0021-843X |
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PMID:4078162 |
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refbase @ user @ |
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707 |
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Author |
Shettleworth, S.J. |
Title |
Stimulus relevance in the control of drinking and conditioned fear responses in domestic chicks (Gallus gallus) |
Type |
Journal Article |
Year |
1972 |
Publication |
Journal of comparative and physiological psychology |
Abbreviated Journal |
J Comp Physiol Psychol |
Volume |
80 |
Issue |
2 |
Pages |
175-198 |
Keywords |
Acoustic Stimulation; Animals; Auditory Perception; Chickens; *Conditioning (Psychology); Conditioning, Classical; Discrimination Learning; *Drinking Behavior; Electroshock; *Fear; *Light; Motor Activity; Photic Stimulation; Punishment; Quinine; *Sound; Taste; Visual Perception |
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0021-9940 |
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PMID:5047826 |
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no |
Call Number |
refbase @ user @ |
Serial |
390 |
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Author |
Shettleworth, S.J. |
Title |
Reinforcement and the organization of behavior in golden hamsters: Pavlovian conditioning with food and shock unconditioned stimuli |
Type |
Journal Article |
Year |
1978 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
4 |
Issue |
2 |
Pages |
152-169 |
Keywords |
Acoustic Stimulation; Animals; *Behavior, Animal; *Conditioning, Classical; Conditioning, Operant; Cricetinae; *Electroshock; Female; *Food; Male; Punishment; *Reinforcement (Psychology); Reinforcement Schedule |
Abstract |
The effects of Pavlovian conditioned stimuli (CSs) for food or shock on a variety of behaviors of golden hamsters were observed in three experiments. The aim was to see whether previously reported differences among the behaviors produced by food reinforcement and punishment procedures could be accounted for by differential effects of Pavlovian conditioning on the behaviors. There was some correspondence between the behaviors observed to the CSs and the previously reported effects of instrumental training. However, the Pavlovian conditioned responses (CRs) alone would not have predicted the effects of instrumental training. Moreover, CRs depended to some extent on the context in which training and testing occurred. These findings, together with others in the literature, suggest that the results of Pavlovian conditioning procedures may not unambiguously predict what system of behaviors will be most readily modified by instrumental training with a given reinforcer. |
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0097-7403 |
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PMID:670890 |
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no |
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refbase @ user @ |
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387 |
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