A pattern recognition system having a plurality of sensors, a plurality of first activation cells wherein ones of the first activation cells are connected to one or more of the sensors, a plurality of second activation cells, wherein overlapping subsets of the first activation cells are connected to ones of the second activation cells, and an output for summing at least outputs from a subset of the plurality of second activation cells to produce a result.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A pattern recognition system comprising: a plurality of sensors; a plurality of first activation cells wherein ones of the first activation cells are connected to one or more of the sensors; a plurality of second activation cells, wherein overlapping subsets of the first activation cells are connected to ones of the second activation cells; and an output for summing at least outputs from a subset of the plurality of second activation cells to produce a result. 2. The pattern recognition system of claim 1, wherein the first activation cells have a first output at a rest frequency in the absence of a first input and at an increased frequency dependent at least partially on summed first inputs from the one or more of the sensors. 3. The pattern recognition system of claim 2, wherein the second activation cells have a second output dependent on summed and weighted ones of the first outputs. 4. The pattern recognition system of claim 1, further comprising a plurality of third activation cells arranged in layers including a middle layer and further layers, wherein overlapping subsets of the second activation cells are connected to ones of the third activation cells arranged in the middle layer and overlapping subsets of the third activation cells in the middle layer are connected to ones of the third activation cells arranged in at least one of the further layers; wherein the output is adapted to sum at least output one from ones of the third activation cells arranged in the further layers. 5. The pattern recognition system of claim 4, further comprising a feedback between the at least one output of the third activation cells and an input of the second activation cells. 6. The pattern recognition system of claim 1, wherein adjacent ones of the second activation cell are connected so as to change a response of the second activation cell dependent on the output of the adjacent ones of the second activation cell. 7. A method of recognising a pattern comprising: stimulating the pattern to produce at least one of more sensor inputs at a plurality of sensors; passing first inputs from an output of ones of the sensors to a plurality of first activation cells; triggering first outputs from the first activation cells; passing the first outputs to a subset of second activation cells triggering second outputs from the subset of the second activation cells summing the second outputs from a plurality of subsets of the second activation cells; and deducing a result for the pattern from the summed second outputs. 8. The method of claim 7, further comprising passing the second outputs to a subsection of third activation cells arranged in a middle layer of a plurality of layers of third activation cells; triggering at least one of the third activation cells arranged in the middle layer to provide third outputs to ones of the third activation cells arranged in further layers; and deducing the result from summed and weighted ones of third outputs of the third activation cells. 9. The method of claim 7, wherein outputs of at least one of the third activation cells are fed back to inputs of at least one of the second activation cells. 10. The method of claim 7, wherein the second outputs decay over time. 11. The method of claim 8, wherein a second output of at least one of the second activation cells affects a second output of at least another one of the second activation cells. 12. The method of claim 7, wherein the triggering of the second outputs has a stochastic component. 13. The method of claim 7, wherein the pattern is a medical image. 14. The method of claim 7, further comprising recognising dermatological patterns on a skin of a patient.