Navigation through vector addition

Etienne, Ariane S.; Maurer, Roland; Berlie, Joëlle; Reverdin, Benoît; Rowe, Tiffany; Georgakopoulos, Joséphine; Séguinot, Valérie

doi:10.1038/24151

Cited by 116 publications

(79 citation statements)

References 15 publications

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“…At the same time, the avoided place is always stable with respect to the animal's starting position and its path. The principal result is that the place avoidance is significantly impaired by the shuffling procedure, which reduces errorless path integration from about 20 m to 5 m. A similar maximal length of the outward journey compatible with effective path integration homing was reported in golden hamsters (22).…”

Section: Discussionsupporting

confidence: 49%

Substratal idiothetic navigation of rats is impaired by removal or devaluation of extramaze and intramaze cues

Stuchlı́k

Fenton²,

Bureš³

2001

Proc. Natl. Acad. Sci. U.S.A.

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The spatial orientation of vertebrates is implemented by two complementary mechanisms: allothesis, processing the information about spatial relationships between the animal and perceptible landmarks, and idiothesis, processing the substratal and inertial information produced by the animal's active or passive movement through the environment. Both systems allow the animal to compute its position with respect to perceptible landmarks and to the already traversed portion of the path. In the present study, we examined the properties of substratal idiothesis deprived of relevant exteroceptive information. Rats searching for food pellets in an arena formed by a movable inner disk and a peripheral immobile belt were trained in darkness to avoid a 60°sector; rats that entered this sector received a mild foot shock. The punished sector was defined in the substratal idiothetic frame, and the rats had to determine the location of the shock sector with the use of substratal idiothesis only, because all putative intramaze cues were made irrelevant by angular displacements of the disk relative to the belt. Striking impairment of place avoidance by this ''shuffling procedure'' indicates that effective substratal idiothesis must be updated by exteroceptive intramaze cues.

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Section: Discussionsupporting

confidence: 49%

Substratal idiothetic navigation of rats is impaired by removal or devaluation of extramaze and intramaze cues

Stuchlı́k

Fenton²,

Bureš³

2001

Proc. Natl. Acad. Sci. U.S.A.

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“…However, path integration information by itself has a great disadvantage when compared with map information because it does not allow for correction of errors (Etienne et al 1998). Drifts in the fish's movement due to water currents in addition to constant detours along the path make the path integration strategy potentially unhelpful.…”

Section: Discussionmentioning

confidence: 99%

Homing in rocky intertidal fish. Are Lipophrys pholis L. able to perform true navigation?

et al. 2012

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Although navigation is common in many animals, only a few perform true navigation, meaning that they have the ability to return to a given place by relying on indirect cues obtained at the release site (i.e., by relying on information from a ''map and compass'' mechanism). The common intertidal fish, Lipophrys pholis, is thought to have homing abilities through a mechanism that primarily makes use of familiar landmarks (i.e., piloting). Anecdotal reports that individuals return to their home pools after release at unfamiliar sites suggest that L. pholis might use cues collected at the release site to find their way back (i.e., they might use map and compass information). Using a completely artificial setup, we tested the homing abilities of L. pholis as a function of age, sex, and familiarity with the release site. The findings showed that motivation for homing is present only in the adult phase and is independent of sex and/or familiarity with the release site. Moreover, adults released at a completely unfamiliar place oriented themselves in a direction roughly similar to that of their home pools. The fact that L. pholis were tested in a complete artificial environment means that hydrodynamic cues can be excluded as playing a role in this process and restricts the candidate options (e.g., magnetic cues). The ability to perform navigation based on a ''map and compass'' mechanism raises many interesting questions about the learning process, once these individuals have restricted home ranges during their lives. In vertebrate navigation, the cues used during the navigation process are a question of debate, and L. pholis offers an outstanding model to test hypotheses and ultimately provide answers.

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“…The relative importance of environmental geometry and landmarks in shaping behavior is still a matter of debate [2], although their role in navigation and organization of behavior has been extensively studied [12][13][14][15]25,28]. Traditionally, the open field is a homogeneous arena and, therefore, location of the home-base seems arbitrary, indicating that it is an intrinsic behavior and not a specific physical location.…”

Section: Introductionmentioning

confidence: 99%

Open-field behavior withstands drastic changes in arena size

Eilam

2003

Behavioural Brain Research

130

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Individual voles were tested on successive days under increasing, decreasing, or randomly changing arena size. Locomotor behavior was adjusted to arena size by (i) preserving the same level of activity, (ii) taking longer but less frequent trips in smaller arenas in contrast to taking more frequent yet shorter trips in the larger arenas, and (iii) moving in the entire space available for exploration in the smaller arenas in contrast to remaining along the walls of the open field in the larger arenas. The effect of testing order was minimal, probably being related to increased novelty under increasing arena size, as opposed to habituation under decreasing arena size, when parts of the same area were re-explored. These behavioral changes averaged up to a two-fold difference compared with the larger six-fold change in the perimeter and 44-fold change in the area of the open field. The modest change in open-field behavior indicates that it has a solid spatio-temporal structure that withstands extensive environmental changes. This behavioral stability and consistency further validates studies of pharmacological, neurological, and genetic preparations that use behavior in a small open field as representation of the general pattern of behavior.

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Navigation through vector addition

Cited by 116 publications

References 15 publications

Substratal idiothetic navigation of rats is impaired by removal or devaluation of extramaze and intramaze cues

Substratal idiothetic navigation of rats is impaired by removal or devaluation of extramaze and intramaze cues

Homing in rocky intertidal fish. Are Lipophrys pholis L. able to perform true navigation?

Open-field behavior withstands drastic changes in arena size

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