, 73:321 | Cite as

From Zero to Sixty: Calibrating Real-Time Responses

  • Theodoro Koulis
  • James O. Ramsay
  • Daniel J. Levitin
Application Reviews and Case Studies


Recent advances in data recording technology have given researchers new ways of collecting on-line and continuous data for analyzing input-output systems. For example, continuous response digital interfaces are increasingly used in psychophysics. The statistical problem related to these input-output systems reduces to linking time-varying covariates to a continuous response variate. Using real-time data obtained from an experiment in psychoacoustics, we showcase new statistical tools that incorporate dynamical elements of an input-output system. We employ functional data analysis (FDA) methods and a simple differential equation to analyze and model the continuous responses. Furthermore, we outline the issues involved in analyzing input-output systems when the exact form of the underlying mathematical model is not known. Finally, we develop a calibration method to facilitate inter-subject and intra-subject comparisons.


input-output functional data analysis real-time data, differential equations response calibration 


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Copyright information

© The Psychometric Society 2007

Authors and Affiliations

  • Theodoro Koulis
    • 1
  • James O. Ramsay
    • 1
  • Daniel J. Levitin
    • 1
  1. 1.Department of PsychologyMcGill UniversityMontrealCanada

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