초록 ▼

The invention provides for the use of synaptic strengths to reflect the connectivity of local space to give a topological representation. Synaptic strengths are zeroed and the mobile entity's position is initialized. A probability of firing (P) is calculated from the spatial firing pattern of each c

The invention provides for the use of synaptic strengths to reflect the connectivity of local space to give a topological representation. Synaptic strengths are zeroed and the mobile entity's position is initialized. A probability of firing (P) is calculated from the spatial firing pattern of each cell. A cell fires if P is higher than a random number. The mobile entity's position is updated from a record of real motions and firing is again determined. Synapses between cells that both fire within 250 msec are strengthened. Synapses between cells with overlapping fields increase in strength whereas synapses between cells with distant fields will stay weak.

대표청구항 ▼

[ What is claimed is:] [10.] A method for generating a representation of an environment, said method comprising the steps of:a) selecting an environment to be represented by a plurality of place cells, each place cell in said plurality of place cells connected to one or more of other place cells in

[ What is claimed is:] [10.] A method for generating a representation of an environment, said method comprising the steps of:a) selecting an environment to be represented by a plurality of place cells, each place cell in said plurality of place cells connected to one or more of other place cells in said plurality of place cells by a synapse, wherein two place cells of said plurality of place cells are designated as a pre synaptic place cell and a post synaptic place cell, each place cell having a firing field within said environment;b) determining whether said pre synaptic place cell has fired within a first preselected time interval, and designating said pre synaptic place cell that has fired as a fired pre synaptic place cell;c) determining whether said post synaptic place cell has fired within a second preselected time interval, said synapse connecting said fired pre synaptic place cell to said post synaptic place cell having a synaptic strength value;d) increasing said synaptic strength value if said post synaptic place cell has fired;e) repeating steps b through d for other pairs of place cells of said plurality of place cells;f) generating a representation of said environment, said generating comprising encoding distances between the firing fields of the pairs of place cells connected by said synapses, said distances being represented by said synaptic strength values.