Journal article

A method for the generation of complex vibrotactile stimuli.

JW Morley, EN Crawford, DG Ferrington, JS Archer, AB Turman, MJ Rowe

Journal of Neuroscience Methods | Published : 1991


A method is described utilizing computer-generated sine wave data and purpose-built hardware to generate a complex vibrotactile stimulus. Two sine waves of different frequency were summed to produce a complex waveform with two temporal components, a high frequency component and a low frequency beat component. The computer-generated data points for each of the two component sine waves were downloaded to two banks of static memory in a dual synchronous arbitrary function generator. The data points in memory were fed to two 12-bit digital-to-analogue converters which sent the two analogue sine wave signals to a summing amplifier where the two sine waves were added. This method provides a comple..

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University of Melbourne Researchers