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Alves, C.; Chichery, R.; Boal, J.G.; Dickel, L. |
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Title |
Orientation in the cuttlefish Sepia officinalis: response versus place learning |
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Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
10 |
Issue |
1 |
Pages |
29-36 |
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Keywords  |
Animals; *Decapodiformes; Exploratory Behavior; *Maze Learning; Memory; *Space Perception |
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Abstract |
Several studies have demonstrated that mammals, birds and fish use comparable spatial learning strategies. Unfortunately, except in insects, few studies have investigated spatial learning mechanisms in invertebrates. Our study aimed to identify the strategies used by cuttlefish (Sepia officinalis) to solve a spatial task commonly used with vertebrates. A new spatial learning procedure using a T-maze was designed. In this maze, the cuttlefish learned how to enter a dark and sandy compartment. A preliminary test confirmed that individual cuttlefish showed an untrained side-turning preference (preference for turning right or left) in the T-maze. This preference could be reliably detected in a single probe trial. In the following two experiments, each individual was trained to enter the compartment opposite to its side-turning preference. In Experiment 1, distal visual cues were provided around the maze. In Experiment 2, the T-maze was surrounded by curtains and two proximal visual cues were provided above the apparatus. In both experiments, after acquisition, strategies used by cuttlefish to orient in the T-maze were tested by creating a conflict between the formerly rewarded algorithmic behaviour (turn, response learning) and the visual cues identifying the goal (place learning). Most cuttlefish relied on response learning in Experiment 1; the two strategies were used equally often in Experiment 2. In these experiments, the salience of cues provided during the experiment determined whether cuttlefish used response or place learning to solve this spatial task. Our study demonstrates for the first time the presence of multiple spatial strategies in cuttlefish that appear to closely parallel those described in vertebrates. |
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Laboratoire de Physiologie du Comportement des Cephalopodes, Universite de Caen, Esplanade de la Paix, 14032, Caen cedex, France |
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1435-9448 |
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PMID:16794852 |
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Equine Behaviour @ team @ |
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2461 |
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Author |
Harris, E.H.; Washburn, D.A. |
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Title |
Macaques' (Macaca mulatta) use of numerical cues in maze trials |
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Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
3 |
Pages |
190-199 |
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Keywords |
Animals; *Cues; *Discrimination Learning; Macaca mulatta/*psychology; Male; Mathematics; *Maze Learning; *Pattern Recognition, Visual |
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Abstract |
We tested the ability of number-trained rhesus monkeys to use Arabic numeral cues to discriminate between different series of maze trials and anticipate the final trial in each series. The monkeys' prior experience with numerals also allowed us to investigate spontaneous transfer between series. A total of four monkeys were tested in two experiments. In both experiments, the monkeys were trained on a computerized task consisting of three reinforced maze trials followed by one nonreinforced trial. The goal of the maze was an Arabic numeral 3, which corresponded to the number of reinforced maze trials in the series. In experiment 1 (n=2), the monkeys were given probe trials of the numerals 2 and 4 and in experiment 2 (n=2), they were given probe trials of the numerals 2-8. The monkeys receiving the probe trials 2 and 4 showed some generalization to the new numerals and developed a pattern of performing more slowly on the nonreinforced trial than the reinforced trial before it for most series, indicating the use of the changing numeral cues to anticipate the nonreinforced trial. The monkeys receiving probe trials of the numerals 2-8 did not predict precisely when the nonreinforced trial would occur in each series, but they did incorporate the changing numerals into their strategy for performing the task. This study provides the first evidence that number-trained monkeys can use Arabic numerals to perform a task involving sequential presentations. |
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Georgia State University, Atlanta, GA, USA. eharris11@gsu |
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1435-9448 |
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PMID:15654597 |
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Equine Behaviour @ team @ |
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2498 |
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Author |
Dudchenko, P.A.; Davidson, M. |
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Title |
Rats use a sense of direction to alternate on T-mazes located in adjacent rooms |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
2 |
Pages |
115-118 |
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Keywords |
Animals; *Cognition; Male; *Maze Learning; Rats; Rats, Inbred Strains; Space Perception |
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Abstract |
Lister hooded rats were trained on a forced-sample T-maze alternation task in an environment lacking spatial landmarks. An early study of spontaneous alternation on the T-maze had shown that rats use a “spatial sense” to select alternate maze arms across mazes. As this phenomenon may provide a useful tool for studying the neural substrates of a directional sense, we wished to confirm this finding on a different version of the T-maze task, with well-trained animals. We found that rats successfully selected the appropriate maze arm when the choice phase of the task was presented on a second maze, oriented in the same direction, and located in an adjacent room. However, choice performance fell to chance level when the second maze was oriented 90 degrees relative to the first. This result suggests that the rats do not simply alternate turns across the two environments, but rather that they rely on a sense of direction that is carried across environments. |
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Department of Psychology, University of Stirling, Stirling FK9 4LA, UK. p.a.dudchenko@stir.ac.uk |
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1435-9448 |
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PMID:12150036 |
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Equine Behaviour @ team @ |
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2608 |
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Author |
Gibson, B.M.; Shettleworth, S.J. |
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Title |
Place versus response learning revisited: tests of blocking on the radial maze |
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Journal Article |
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Year |
2005 |
Publication |
Behavioral neuroscience |
Abbreviated Journal |
Behav Neurosci |
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Volume |
119 |
Issue |
2 |
Pages |
567-586 |
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Keywords |
Animals; *Association Learning; Male; *Maze Learning; Memory; Rats; Rats, Long-Evans; Reproducibility of Results |
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Abstract |
Neurobiological and behavioral research indicates that place learning and response learning occur simultaneously, in parallel. Such findings seem to conflict with theories of associative learning in which different cues compete for learning. The authors conducted place+response training on a radial maze and then tested place learning and response learning separately by reconfiguring the maze in various ways. Consistent with the effects of manipulating place and response systems in the brain (M. G. Packard & J. L. McGaugh, 1996), well-trained rats showed strong place learning and strong response learning. Three experiments using associative blocking paradigms indicated that prior response learning interferes with place learning. Blocking and related tests can be used to better understand how memory systems interact during learning. |
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Department of Psychology, University of New Hampshire, Durham, NH 03824-3567, USA. bgibson@cisunix.unh.edu |
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0735-7044 |
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PMID:15839803 |
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refbase @ user @ |
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362 |
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