Patent ID: 6309342
Filing Date: 2001-10-30
Classification: A61B,G16H

Abstract:
A method of determining the physiological reactivity of an individual with respect to images, comprising:measuring at least one physiological parameter of an individual during a baseline calm period of time;measuring the said at least one physiological parameter of said individual during a stress period of time and a succeeding rest period of time;dividing said measured data for each of said periods of time into a plurality of predetermined time segments;computing a histogram or Fourier analysis as appropriate on said predetermined time segments for each said period of time;standardizing said computed data;conducting a principal component analysis, a canonical discriminant analysis, or a neural network, on said data to establish a baseline calm or rest period set of scores and a stress period set of scores;measuring the said at least one physiological parameter of said individual during an image presentation period of time;repeating said time segmenting, said histogram or Fourier analysis, and said standardizing steps on said measured physiological data for said image presentation period of time;applying vectors from said conducting step to said image data to produce an image set of scores which are compared with said baseline and stress sets of scores; anddetermining whether said presented image is activating, deactivating, or neutral based on said comparison.