A programmable timing device for neurophysiological studies of the auditory system

To study the effects of stimulus duration on neural responses, it is essential to be able to modify stimulus timing paradigms rapidly. A four-channel programmable timing device (PTD) has been designed to provide flexible and accurate data-acquisition timing protocols, PTD outputs are used to control data-acquisition and stimulus-generation peripherals. Four attributes of the timing protocol are programmable: trial duration, stimulus duration, stimulus onset delay, and a number of trials. The use of the PTD has allowed for a more detailed description of dorsal cochlear nucleus unit-response properties