EEG Responses to Auditory Stimuli in Waking Children

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Abstract
Eleven girls and 10 boys 11 to 12 years of age were exposed to click sounds of moderate intensity and frequency with eeg scalp electrodes attached. Monopolar and bipolar recordings were analyzed both by manual techniques and by computer. The mean latency of the evoked potential in monopolar recording was 152.44 msec. Mean amplitude was 33.20 [mu]V. An increase in stimulus intensity improved percent identification. No significant differences occurred when frequency was changed. Monopolar recordings provided better results than bipolar in this experiment. Auditory stimulation can be distinguished on the eeg from random cortical activity.