Arena geometry and path shape: When rats travel in straight or in circuitous paths?

Yaski, Osnat; Portugali, Juval; Eilam, David

doi:10.1016/j.bbr.2011.07.055

Cited by 28 publications

(24 citation statements)

References 57 publications

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“…(Figure 3A). In the following example it became clear that as in earlier experiments using rats (Avni et al, 2008;Yaski et al, 2011), when first introduced into a new environment all seven octopuses tend to remain in the perimeter.…”

Section: Automated Spatial Trackingmentioning

confidence: 58%

Cephalopod Experimental Projected Habitat (CEPH): Virtual Reality for Underwater Organisms

Josef

2018

Front. Mar. Sci.

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Cephalopods' visually driven, dynamic, and diverse skin display makes them a key animal model in sensory ethology and camouflage research. Development of novel methods is critically important in order to monitor and objectively quantify cephalopod behavior. In this work, the development of Cephalopod Experimental Projected Habitat (CEPH) is described. This newly developed experimental design bridges computational and ethological sciences, providing a visually controlled arena which requires limited physical space and minimal previous technical background. Created from relatively inexpensive and readily available materials, the experimental apparatus utilizes reflected light which closely resembles natural settings. Preliminary results suggest the experimental design reproducibly challenges marine organisms with visually dynamic surroundings, including videos of prey and predator. This new approach should offer new avenues for marine organism sensory research and may serve researchers from various fields.

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Section: Automated Spatial Trackingmentioning

confidence: 58%

Cephalopod Experimental Projected Habitat (CEPH): Virtual Reality for Underwater Organisms

Josef

2018

Front. Mar. Sci.

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“…A range of different arena sizes have been used in rodent open field tests (Walsh and Cummins, 1976), and the geometry of the environment has shown to influence path shapes of rats not only at the perimeter but also at the centre of an environment (Yaski et al, 2011). A wall can exert both a guiding and attracting influence on mouse behaviour from quite some distance (Horev et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Wall following inXenopus laevisis passive

Hänzi

2017

Preprint

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2 1 2 2Summary statement: Xenopus laevis tadpoles and froglets tend to swim along the walls of a square tank; but this 2 3 wall following is passive -in a convex tank, they leave the wall. 2 4 2 5 2 6 2 Abstract 2 7The tendency of animals to follow boundaries within their environment can serve as a strategy for spatial learning or 2 8 defence. We examined whether animals of Xenopus laevis employ such a strategy by characterizing their swimming 2 9behaviour. We also investigated potential developmental changes, the influence of tentacles, which some of the 3 0 developmental stages possess, and whether wall-following is active (animals seek out wall contact) or passive. 1Animals' swimming movements were recorded with a camera from above in a square tank with shallow water and 3 2 their trajectories were analysed especially for proximity to the nearest wall. With the exception of young larvae, in 3 3 which wall following was less strong, the vast majority of animals -tadpoles and froglets -spent more time near the 3 4wall than what would be expected from the proportion of the area near the wall. The total distance covered was not a 3 5 confounding factor. Wall following was also not influenced by whether the surrounding of the tank was black or 3 6 white, illuminated by infrared light, or by the presence or absence of tentacles. Animals were stronger wall followers 3 7 in smaller tanks. When given a choice in a convex tank to swim straight and leave the wall or turn to follow the wall, 3 8 the animals consistently left the wall, indicating that wall following in Xenopus laevis is passive. This implies that 3 9 wall following behaviour in Xenopus derives from constraints imposed by the environment (or the experimenter) 4 0 and is unlikely a strategy for spatial learning or safety-seeking. 4 1

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“…This exploratory behavior continues until the whole area is explored. (2) As in saccadic eye movements, in whole body exploratory behaviour, salient features in the environment play an important role in determining the animal's movement [77,78]: This is so with respect to the form of the explored area as a whole (Figure 24), and this is so with respect to salient features within the area. Here it was found that not only those salient features attract the animal's movement, but also that different spatial configurations of salient environmental objects, entail different forms of exploratory spatial movements.…”

Section: Exploratory Behaviormentioning

confidence: 99%

Information and Selforganization: A Unifying Approach and Applications

Haken

Portugali

2016

Entropy

Self Cite

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Selforganization is a process by which the interaction between the parts of a complex system gives rise to the spontaneous emergence of patterns, structures or functions. In this interaction the system elements exchange matter, energy and information. We focus our attention on the relations between selforganization and information in general and the way they are linked to cognitive processes in particular. We do so from the analytical and mathematical perspective of the "second foundation of synergetics" and its "synergetic computer" and with reference to several forms of information: Shannon's information that deals with the quantity of a message irrespective of its meaning, semantic and pragmatic forms of information that deal with the meaning conveyed by messages and information adaptation that refers to the interplay between Shannon's information and semantic or pragmatic information. We first elucidate the relations between selforganization and information theoretically and mathematically and then by means of specific case studies.

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Arena geometry and path shape: When rats travel in straight or in circuitous paths?

Cited by 28 publications

References 57 publications

Cephalopod Experimental Projected Habitat (CEPH): Virtual Reality for Underwater Organisms

Cephalopod Experimental Projected Habitat (CEPH): Virtual Reality for Underwater Organisms

Wall following inXenopus laevisis passive

Information and Selforganization: A Unifying Approach and Applications

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