An artificial neural network method to classify auditory brainstem evoked potentials (BAEPs) for automated response detection is developed. Three layer feedforward networks trained with backpropagation method were used to classify the BAEP signals into `response' or `no-response' classes. Temporal waveforms were used as inputs after various coding procedures. The effects of hidden layer size and training set size on the recognition rate of neural networks were studied. The simulations showed that the correct recognition rates of the networks were moderate, approaching the lower boundary of an optimum Bayesian classifier in several cases. However, when the contextual information available to the human experts during classification but not to the networks was removed, by letting the human experts classify the same signals under conditions similar to which the networks operated, the networks performed nearly as good as the experts. The results also suggest that the features selected and represented by the networks resemble those features of the signals used by experts in making their classifications.
|Original language||English (US)|
|Number of pages||16|
|State||Published - Dec 1 1992|
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