Self-organizing path integration using a linked continuous attractor and competitive network: path integration of head direction.
A key issue is how networks in the brain learn to perform path integration, that is update a represented position using a velocity signal. Using head direction cells as an example, we show that a competitive network could self-organize to learn to respond to combinations of head direction and angular head rotation velocity. These combination cells can then be used to drive a continuous attractor network to the next head direction based on the incoming rotation signal. An associative synaptic modification rule with a short term memory trace enables preceding combination cell activity during training to be associated with the next position in the continuous attractor network. The network accounts for the presence of neurons found in the brain that respond to combinations of head direction and angular head rotation velocity. Analogous networks in the hippocampal system could self-organize to perform path integration of place and spatial view representations.
Stringer
Simon M
SM
Centre for Computational Neuroscience, Department of Experimental Psychology, Oxford University, South Parks Road, Oxford, UK.
Rolls
Edmund T
ET
D000200:Action Potentials / Q000502:physiology; D000818:Animals; D003198:Computer Simulation; D019416:Head Movements; D008959:Models, Neurological; D009415:Nerve Net / Q000502:physiology*; D016571:Neural Networks, Computer; D009474:Neurons / Q000502:physiology*; D013028:Space Perception / Q000502:physiology; D013569:Synapses / Q000502:physiology; D013997:Time Factors