Abstract
Waveforms that contain points of abrupt transition from one frequency to another are useful in studies of visual perception. When applied to the Z-axis of an oscilloscope, such waveforms create vertical bars, which generate a wide variety of patterns, as required.
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References
Mundl, W. J., &Malmo, H. P. An ultrasonic auditory stimulator.Behavior Research Methods & Instrumentation, 1981,13, 328–330.
Tagliavini, A. Modified function generator yields linear VCO.Electronics, 1975,48 (22), 96–97.
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The author thanks Steven Stober for suggesting the usefulness of the described apparatus in research of visual perception and for his practical evaluation of the instrument.
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Mundl, W.J. Wave trains consisting of abruptly changing frequencies. Behavior Research Methods & Instrumentation 14, 19–20 (1982). https://doi.org/10.3758/BF03202109
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DOI: https://doi.org/10.3758/BF03202109