put in very simple terms this is how a brain cell works incoming impulses are passed in a domino effect from one neuron to the next. the resulting circuit connects the neurons and it is this circuit that artificial intelligence tries to simulate as a digital neural network. like our brains the network can learn how to identify tuberculosis for instance. first the network needs to be trained or taught x. rays of tuberculosis patients are fed to the system. initially it struggles to correctly identify the condition. but every time an x. ray is fed in the network structure is adapted and its diagnostic ability improves . it takes thousands and thousands of clinical data sets to train the machine.