×

Equipment for testing or measuring brain activity

  • US 5,331,969 A
  • Filed: 08/02/1990
  • Issued: 07/26/1994
  • Est. Priority Date: 07/30/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. Apparatus for assessing electrical activity of a brain of a subject comprising:

  • first stimulus means for generating and applying a repetitive stimulus to the brain;

    second stimulus means for generating and applying to the brain a time varying stimulus relating to a cognitive task; and

    detection means for distinguishing and detecting a steady state response of the brain to said first stimulus, and for detecting a change or changes in said response during a data acquisition period when the repetitive stimulus and a time varying cognitive task stimulus are simultaneously applied to the brain of the subject, wherein the detection means can detect time variations in brain activity of the subject which occur during the data acquisition period.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×