An information processing device comprising: a touch panel unit including a touch panel and a touch panel controller configured to detect a position of a touch point touched by a user on the touch panel and amplitude of electrostatic capacitance at the touch point, and to output the position and time series data for the amplitude of electrostatic capacitance as an output signal; a signal processing unit configured to subject the output signal from the touch panel controller to signal processing; a main processor configured to run a game application; and a display controller configured to control data that should be displayed on a display device provided in the touch panel, wherein the signal processing unit includes: a sampling unit configured to acquire a sample data series from the time series data for the amplitude of electrostatic capacitance; an analysis unit configured to determine a frequency spectral distribution by transforming the sample data series into a frequency domain; and a peak detection unit configured to detect a peak in a frequency band of a general pulse of a human being in the frequency spectral distribution, and to find a frequency of the detected peak so as to determine a pulse of the user, wherein the main processor is configured to adjust a parameter of the game application in accordance with the determined pulse. a touch panel unit including a touch panel and a touch panel controller configured to detect a position of a touch point touched by a user on the touch panel and amplitude of electrostatic capacitance at the touch point, and to output the position and time series data for the amplitude of electrostatic capacitance as an output signal; a signal processing unit configured to subject the output signal from the touch panel controller to signal processing; a main processor configured to run a game application; and a display controller configured to control data that should be displayed on a display device provided in the touch panel, wherein the signal processing unit includes: a sampling unit configured to acquire a sample data series from the time series data for the amplitude of electrostatic capacitance; an analysis unit configured to determine a frequency spectral distribution by transforming the sample data series into a frequency domain; and a peak detection unit configured to detect a peak in a frequency band of a general pulse of a human being in the frequency spectral distribution, and to find a frequency of the detected peak so as to determine a pulse of the user, wherein the main processor is configured to adjust a parameter of the game application in accordance with the determined pulse. a sampling unit configured to acquire a sample data series from the time series data for the amplitude of electrostatic capacitance; an analysis unit configured to determine a frequency spectral distribution by transforming the sample data series into a frequency domain; and a peak detection unit configured to detect a peak in a frequency band of a general pulse of a human being in the frequency spectral distribution, and to find a frequency of the detected peak so as to determine a pulse of the user, wherein the main processor is configured to adjust a parameter of the game application in accordance with the determined pulse.