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The purpose of this research was to determine if there was an effective way to quantitatively assess the physiological effects of various forms of stress during mental performance and to correlate these assessments with different psychological mood states. Tasks were either performed under time constraint (Tc) or a non-time constraint (NTc) conditions. We evaluated the relationship between heartbeat...
Baseline drift reduction in electrocardiogram (ECG) by a high-pass digital/analog filter at frequencies higher than 0.5 Hz distort the waveshapes of the ECG signal. The authors describe a drift-reduction method, called the baseline tracking algorithm (BTA), that preserves the ECG waveshapes. The isoelectric regions before the P-wave and after the T-wave and the P-Q interval of an ECG signal are used...
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