Detecting and recording physiological changes accompanying emotion stresses

• US 2,944,542 A
• Filed: 10/03/1955
• Issued: 07/12/1960
• Est. Priority Date: 10/03/1955
• Status: Expired due to Term

• Current Assignee: Claude C. Barnett, Homer J. Dana
• Original Assignee: Claude C. Barnett, Homer J. Dana
• Inventors: Barnett, Claude C., Dana, Homer J.
• Application Number:
  US03/538,154
• Time in Patent Office: 1,744 Days
• US Class Current: 600/501
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0285 Measuring or recording phase velocity of blood waves
• CPC Class Codes: A61B 5/0295 using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
• CPC Class Codes: A61B 5/0535 Impedance plethysmography for measuring blood flow A61B5/0295
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/333 Recording apparatus specially adapted therefor
• CPC Class Codes: A61B 5/349 Detecting specific parameters of the electrocardiograph cycle

Claims