Related Experiment Video
Updated: Jan 25, 2026
09:16
Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping
Published on: March 24, 2023
2.0K
Composing egocentric and allocentric maps for flexible navigation
Daniel Shani1,2,3, Peter Dayan1,2
1Max Planck Institute for Biological Cybernetics, Tübingen, Germany.
Plos Computational Biology
|January 23, 2026
Summary
This study introduces egocentric successor representations (SRs) combined with allocentric SRs for navigation. This integration enhances an agent's ability to learn policies and adapt to new environments efficiently.
Area of Science:
- Cognitive Science
- Neuroscience
- Artificial Intelligence
Background:
- Egocentric representations are traditionally limited to simple behaviors.
- Egocentric representations may exist in the hippocampal formation.
- Modern navigation methods have not fully integrated egocentric representations.
Purpose of the Study:
- Investigate egocentric successor representations (SRs).
- Combine egocentric SRs with allocentric representations for navigation.
- Develop a reinforcement learning agent for complex 2D environments.
Main Methods:
- Built a reinforcement learning agent.
- Combined egocentric and allocentric SRs.
- Trained the agent in complex 2D environments.
Main Results:
- The agent learned generalizable egocentric and allocentric value functions.
- Additive composition of representations enabled efficient policy learning.
- The agent adapted quickly to new environments.
Conclusions:
- Egocentric relational structure is beneficial for navigation.
- Cognitive maps can be composed from multiple simple maps.
- This approach offers a new perspective on cognitive map composition.
More Related Videos
Related Concept Videos
01:42Microtubule Associated Proteins (MAPs)
5.8K
Microtubule function and architecture are regulated by an array of specialized proteins called microtubule-associated proteins or MAPs. These proteins are widespread across different organisms and have conserved protein motifs, like the multi-TOG domain for tubulin binding found in the CLASP family of MAPs. Some MAPs are lineage-specific based on their conserved domains. Their functions depend upon the cytoskeletal architecture and cell type they are located within. In-plant cells, a specific...
5.8K
00:52¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
1.3K
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
1.3K
01:29Plotting of Topographic Maps
491
Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
491
01:29Coordinates and Map Projections
599
Coordinates and map projections are essential tools in accurately representing the Earth's surface for various applications, ranging from navigation to spatial analysis. The latitude and longitude coordinate system is a universally recognized framework for defining locations. Latitude specifies the distance of a point north or south of the equator, measured in degrees from 0° at the equator to 90° at the poles. Longitude indicates a location's position east or west of the prime meridian,...
599
01:15¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
1.7K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.7K
02:21Globular and Fibrous Proteins
46.9K
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
46.9K