Method and apparatus for the analysis, display and classification of event related potentials by interpretation of P3 responses

• US 5,113,870 A
• Filed: 04/06/1990
• Issued: 05/19/1992
• Est. Priority Date: 05/01/1987
• Status: Expired due to Term

• Current Assignee: Joel P. Rossenfeld
• Original Assignee: Joel P. Rossenfeld
• Inventors: Rossenfeld, Joel P.
• Primary Examiner(s): Kamm, Willam E.
• Application Number:
  US07/495,284
• Time in Patent Office: 774 Days
• Field of Search: 128/731, 128/732, 364/413.05
• US Class Current: 600/544
• CPC Class Codes: A61B 5/16 Devices for psychotechnics using teaching or educational appliances G09B1/00 - G09B7/00; Testing reaction times ; Devices for evaluating the psychological state
• CPC Class Codes: A61B 5/164 Lie detection
• CPC Class Codes: A61B 5/377 using evoked responses
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00

Abstract

A method analyzing event-related potentials (ERP), and their respective P300 brain wave responses of a subject to a repeatedly presented stimulus interspersed with non-significant stimuli. The method comprises providing a source of stimulation to the subject including personal knowledge and non-significant stimuli, detecting event related potentials of the subject, translating these potentials to P300 brain waves, and analyzing the P300 brain wave activity for personal knowledge detection. A computer is is utilized to interpret and analyze the responses for personal knowledge.

Claims

1. A method of determining the cognitive response to personally meaningful information of a subject to a repeatedly presented significant personal knowledge stimulus or stimuli interspersed with nonsignificant stimuli comprising:

(a) formulating a series of stimuli to be presented to the subject, said stimuli to include non-significant stimuli and possibly personally significant stimuli;

(b) providing a source of stimulation to the subject, including said personal knowledge and said nonsignificant stimuli;

(c) providing detection means for detecting event related potentials;

(d) translating event related potentials to P300 brain waves;

(e) obtaining P300 brain wave activity; and

(f) analyzing said P300 brain wave activity for personal knowledge detection.

2. The method of claim 1 wherein the stimuli is at least one of a visual stimulus and an auditory stimulus.

3. The method of claim 1 wherein the step of providing a source of stimulation to the patient is further characterized as providing a speech-type stimulus.