Brain electrical potential mapping using transputers

In order to enhance the technique of topographic brain potential mapping, a parallel implementation was developed using TDS and the OCCAM programming language in conjunction with a network of INMOS Transputers. A number of architectures were investigated and finally a network of five transputers were used, with a main interface program running on a B008 processor passing data, measured from 16 locations on the surface of the scalp to three other Trams, fitted with T800 chips on the B008 board. This parallel arrangement of processors executed a `Four Nearest Neighbours´ interpolation algorithm to calculate values for all unknown points in a 128×128 array. Results indicate the time taken to produce the data necessary to draw a screen of 128×128 pixels to be 1.2 seconds