346 



Information Storage and Neural Control 



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Fig. 12. Artifact-Contaminated EKG. Slow wave artifact distorting wave shape 

 and high frequency "pop" artifact are "filtered" out by absence of "recognition." 

 Only those complexes within acceptable limits are held in intermediate storage 

 for further computation. Sixty-cycle artifact is filtered by conventional resonant 



rejection circuits. 



sway artifact and high frequency movement artifact demand, 

 for practical analysis, automatic rejection of the contaminated 

 complex. The "filter" we have employed is a system of signature 

 recognition or pattern recognition. A somewhat different type of 

 pattern recognition, as defined in the recent work of Steinberg, 

 et al. (9), is a hybrid combination of Cases 3 and 4, and again 

 utilizes several coding points of period analysis. 



Figure 11 again presents a synthetic function of mixed sine 

 waves. The two oscillators drift in relation to one another over 

 time, and the wave shape pattern changes with this phase shift. 

 The square wave train generated by the baseline cross of the 

 primary, the major period, is presented to digital circuitry which 

 "recognizes" a complex if, and only if, it is made up of a "fat- 

 thin-fat" square wave set. The definition of "thin" and "fat" 



