| 摘要 |
A method and apparatus are provided for detecting tremors induced in a subject that are indicative of stress, emotion, fatigue, deception or other similar psychological states. The apparatus includes a signal source for directly applying an excitation signal having a predefined amplitude and frequency to the subject so as to induce the tremor. The apparatus also includes a Doppler system for irradiating the subject with electromagnetic radiation and for detecting the electromagnetic radiation returning from the subject following modulation by the induced tremor. The Doppler system also analyzes the returning electromagnetic radiation to determine at least one of an amplitude of the induced tremor and a phase shift of the induced tremor relative to the excitation signal provided by the signal source. The amplitude and/or phase shift of the modulated electromagnetic radiation provide information regarding the stress, emotion, fatigue, deception or other similar psychological states of the subject.
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