What is the meaning of pneumograph?
Definition of pneumograph : an instrument for recording thoracic movements or volume change during respiration.
What is the pneumograph component?
Simply stated, the pneumograph component records on paper a graphic display of the respiration pattern. The pneumograph channel is a low pressure (atmospheric) air tight chamber which consists of the tubular rubber bellows assembly (pneumograph), connected to the actuator assembly (pneumo channel) via rubber tubing.
What does the pneumograph measure?
A pneumograph, also known as a pneumatograph or spirograph, is a device for recording velocity and force of chest movements during respiration.
What is pneumograph tubes?
Pneumograph Tube. Description. A device for recording the rate and extent of respiratory movements by means of a double-headed tambour stretched across the individual’s chest, with an attached rubber tube for communicating the movements to a recording tambour. – from Warren’s Dictionary of Psychology.
Where do you attach a pneumograph?
During the polygraph test, two pneumographs are attached to the subject, one around their chest and the other around their abdominal area. GSR – the galvanic skin response is a protruding electrode which is used to determine the changes in a subject’s anxiety.
What do I need to record a pneumograph?
The pneumograph is a device that records the respiratory velocity and force of chest movements during respiration. This device is of value in recording the respiratory movements of the thoracic wall.
How long is the recording pen of pneumograph?
Recording pen unit which is usually 7 inches in length.
What is a pneumograph?
Definition of pneumograph : an instrument for recording thoracic movements or volume change during respiration : an instrument for recording the thoracic movements or volume change during respiration
What does polygraph mean in medical terms?
Definition of polygraph. : an instrument for recording variations of several different pulsations (as of physiological variables) simultaneously — compare lie detector. Other Words from polygraph Synonyms Did You Know?
What is a Prolonged polygraph examination?
Prolonged polygraph examinations are sometimes used as a tool by which confessions are extracted from a defendant, as in the case of Richard Miller, who was persuaded to confess largely by polygraph results combined with appeals from a religious leader.
What is the output of a polygraph test?
A polygraph’s output consists of a set of squiggly lines on a computer screen, each indicating one function being tested. The functions most commonly measured are blood pressure, breathing rate, pulse, and perspiration, all of which tend to increase when you lie. Polygraphs have been in use since 1924,…