Theory of rodent navigation based on interacting representations of space

Touretzky, David S.; Redish, A. David

doi:10.1002/(sici)1098-1063(1996)6:3<247::aid-hipo4>3.0.co;2-k

Cited by 228 publications

(190 citation statements)

References 66 publications

(108 reference statements)

Supporting

Mentioning

181

Contrasting

Order By: Relevance

“…where ΔΦ i = Φ L − φ LC i is the angular distance between the direction of the landmark Φ L and the cell's preferred direction, and Δ R→L is the distance from the animat to the landmark in centimeters (see in, e.g., Brown and Sharp (1995), Touretzky and Redish (1996), for similar modeling of sensory input). The width of the Gaussian centered at the landmark direction increases as the animat approaches the landmark, expressing the fact that the landmark image takes up a larger part of the view field if the animat is close to the landmark.…”

Section: Taxon Expertmentioning

confidence: 99%

Path planning versus cue responding: a bio-inspired model of switching between navigation strategies

et al. 2010

View full text Add to dashboard Cite

In this article, we describe a new computational model of switching between path-planning and cue-guided navigation strategies. It is based on three main assumptions: (i) the strategies are mediated by separate memory systems that learn independently and in parallel; (ii) the learning algorithms are different in the two memory systems-the cueguided strategy uses a temporal-difference (TD) learning rule to approach a visible goal, whereas the path-planning strategy relies on a place-cell-based graph-search algorithm to learn the location of a hidden goal; (iii) a strategy selection mechanism uses TD-learning rule to choose the most successful strategy based on past experience. We propose a novel criterion for strategy selection based on the directions of goal-oriented movements suggested by the different strategies. We show that the selection criterion based on this "common currency" is capable of choosing the best among TD-learning and planning strategies and can be used to solve navigational tasks in continuous state and action spaces. The model has been successfully applied to reproduce rat behavior in two water-maze tasks in which the two strategies were Laurent Dollé, Denis Sheynikhovich-First authorship shared.

show abstract

Section: Taxon Expertmentioning

confidence: 99%

Path planning versus cue responding: a bio-inspired model of switching between navigation strategies

et al. 2010

View full text Add to dashboard Cite

show abstract

“…However, in order to accommodate all the known properties of hippocampal 'place' cells, one needs to include a variety of computational properties, including inputs from (presumably highly-processed) sensory representations, inputs from an intrinsic (extrahippocampal) coordinate system (updated by vestibular, proprioceptive, and motor-system efferent-copy), and intrinsic (intrahippocampal) autoassociator dynamics [173]. Taking this as a generalized computational model of hippocampus, the hippocampus is essentially representing the association between external (sensory) and internal (idiothetic) cues [108,150,173,177,225].…”

Section: The Multiple-map Hypothesismentioning

confidence: 99%

“…As noted above, cells in extra-hippocampal structures tend to be insensitive to the environmental changes that hippocampal cells are sensitive to [123,167,201,203]. This internal coordinate system has been termed the path-integration system by a number of authors [86,108,177,196,225,231].…”

Section: The Multiple-map Hypothesismentioning

confidence: 99%

“…In the mid-1990s, two groups simultaneously and independently derived this multiple-map concept as a means of explaining the non-spatial place cell data [108,173,177,196,225,231]. We termed this property reference frames [173,177,225,231], suggesting that the navigation system switched reference frames between environments, tasks, etc. ; McNaughton and colleagues termed this property charts [108,196].…”

Section: The Multiple-map Hypothesismentioning

confidence: 99%

“…See [173] for review. These disparate properties can be explained by postulating a role of the hippocampus in associating external cues with an internal coordinate system (the cogniti6e map, [150]) [86,108,173,177,196,225]. Place fields also rearrange in response to non-spatial stimuli under certain conditions (see below), as well as in the face of cue-conflict, whether that be between external cues [150,199,250], or between external cues and internal idiothetic 1 coordinate systems [89,202].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The hippocampal debate: are we asking the right questions?

Redish

2001

Behavioural Brain Research

View full text Add to dashboard Cite

For years, the debate has been: 'Is the hippocampus the cognitive map?' or 'Is the hippocampus the core of memory?' These two hypotheses derived their original power from two key experiments-the cognitive map theory from the remarkable spatial correlates seen in recordings of hippocampal pyramidal cells and the memory theory from the profound amnesias seen in the patient H.M. Both of these key experiments have been reinterpreted over the years: hippocampal cells are correlated with much more than place and H.M. is missing much more than just his hippocampus. However, both theories are still debated today. The hippocampus clearly plays a role in both navigation and memory processing. The question that must be addressed is rather: 'What is the role played by the hippocampus in the navigation and memory systems?' By looking at the navigation system as a whole, one can identify the major role played by the hippocampus as correcting for accumulation errors that occur within idiothetic navigation systems. This is most clearly experimentally evident as reorientation when an animal is lost. Carrying this over to a more general process, this becomes a role of recalling a context, bridging a contextual gap, or, in other words, it becomes a form of recognition memory. I will review recent experimental data which seems to support this theory over the more general spatial or memory theories traditionally applied to hippocampus.

show abstract

Cognitive maps beyond the hippocampus

1997

Self Cite

View full text Add to dashboard Cite

We present a conceptual framework for the role of the hippocampus and its afferent and efferent structures in rodent navigation. Our proposal is compatible with the behavioral, neurophysiological, anatomical, and neuropharmacological literature, and suggests a number of practical experiments that could support or refute it. We begin with a review of place cells and how the place code for an environment might be aligned with sensory cues and updated by self‐motion information. The existence of place fields in the dark suggests that location information is maintained by path integration, which requires an internal representation of direction of motion. This leads to a consideration of the organization of the rodent head direction system, and thence into a discussion of the computational structure and anatomical locus of the path integrator. If the place code is used in navigation, there must be a mechanism for selecting an action based on this information. We review evidence that the nucleus accumbens subserves this function. From there, we move to interactions between the hippocampal system and the environment, emphasizing mechanisms for learning novel environments and for aligning the various subsystems upon re‐entry into familiar environments. We conclude with a discussion of the relationship between navigation and declarative memory. Hippocampus 7:15–35, 1997. © 1997 Wiley‐Liss, Inc.

show abstract

Theory of rodent navigation based on interacting representations of space

Cited by 228 publications

References 66 publications

Path planning versus cue responding: a bio-inspired model of switching between navigation strategies

Path planning versus cue responding: a bio-inspired model of switching between navigation strategies

The hippocampal debate: are we asking the right questions?

Cognitive maps beyond the hippocampus

Contact Info

Product

Resources

About