[MIRA (multichannel infant reflex audiometry) with biofeedback].

The MIRA is based on the simultaneous registration of sucking and breathing activities and of eye movements together with the stimulus indicator. Alterations of these activities are analysed in respect of stimulus time and intensity. The combination with biofeedback (frequency-modulation of the stimulus by the electrical analog of sucking, or chewing, activity) results in more distinct alterations of the activities than MIRA alone and furthermore points to the development of the feedback loop between articulation and hearing, a prerequisite of speech development.