Models of Spatial Navigation

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Models of Spatial Navigation

• Horatiu Voicu
• Computer Science Division
• The University of Memphis

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Computational Models of Spatial Navigation

• Verbal (Deutch, 1960)
• Behavioral (Reid and Staddon, 1998)
• Computational
• Symbolic (Kuipers, 1978)
• Connectionist (Schmajuk and Thieme,1992)
• Attractor networks (Samsonovitch and McNaughton,
  1997)

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What has been accomplished so far in modeling
spatial navigation

• Path Integration

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What has been accomplished so far in modeling
spatial navigation

• Shortcut Finding

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What has been accomplished so far in modeling
spatial navigation

• Detour Finding

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What has been accomplished so far in modeling
spatial navigation

• Detour Finding

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What has been accomplished so far in modeling
spatial navigation

• Cognitive Map Building

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What has been accomplished so far in modeling
spatial navigation

• Latent Learning

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What has been accomplished so far in modeling
spatial navigation

• Navigation in Large Environments

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What has been accomplished so far in modeling
spatial navigation

• Area-Restricted Search

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What has been accomplished so far in modeling
spatial navigation

• Explanation of place cells and theta rhythm

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(Adapted from Thinus-Blanc, 1996)
Temporal Cortex
Frontal Cortex
Parietal Cortex
Cingulate Cortex
Parahippocampal Cortex
Perirhinal Cortex
Presubicullum
Dentate Gyrus
Entorhinal Cortex
Subicullum
CA1
CA3
Parasubicullum
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Navigation Systems
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(No Transcript)
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Key innovations in our approach

• Integration of different navigation systems in
  one multi-purpose navigation system
• Demonstration of chaotic mesoscopic space-time
  neurodynamics for perception and action in an
  autonomous agents

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Accomplishments
Goal finding
Detour finding
Obstacle avoidance
Cognitive map building
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Challenges

• Use Chaotic Attractor Networks to
• Store and retrieve information from cognitive
  maps in simulated and real environments
• Perform information fusion of different types of
  sensory modalities
• Perform action planning and selection

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Environment
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Environment