A Mathematical Model of neurons Neuron computes The thresholding function is altenative weighted sum known as the"step"function, or the "Heaviside"function. Threshold functian. SUM thresholding st 8. W:X Fire if sum exceeds a threshold e -y=l if SUM> 0 Threshold function. y= O if SUM≤.7 A Mathematical Model of Neurons • Neuron computes weighted sum: • Fire if SUM exceeds a threshold θ. – y=1 if SUM > θ – y=0 if SUM  θ.   n i i i SUM w x 1