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Technique for diagnosing attention deficit hyperactivity disorder

  • US 6,843,774 B2
  • Filed: 11/21/2002
  • Issued: 01/18/2005
  • Est. Priority Date: 05/25/2001
  • Status: Expired due to Fees
First Claim
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1. A method of determining whether a subject has Attention Deficit Hyperactivity Disorder, comprising:

  • sampling the peripheral skin temperature of the subject during a pre-determined time interval when the subject is in an inactive state to provide sampled peripheral skin temperature data;

    dividing the data into a series of windows of equal time intervals across the pre-determined time interval;

    for each window applying a fast Fourier Transform algorithm (FFT) to produce a data set of FFT magnitudes and determining a range of FFT magnitude variation, which is the difference between the FFT magnitude at a maximum frequency fmax and the FFT magnitude at the minimum frequency fmin; and

    aggregating the magnitude ranges for one or more of the windows to produce an aggregate magnitude range value which is indicative of whether or not the subject has ADHD;

    wherein after said sampling, temperature data sampled during a noise event is eliminated through manual or automatic means.

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