from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instrument for recording variations in pressure, as of the blood, or in tension, as of a muscle, by means of a pen or stylus that marks a rotating drum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device that gives a graphical representation of a variation in a phenomenon such as blood pressure over time, using a pen on a rotating drum.
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring, and recording graphically, the pressure of the blood in any of the blood vessels of a living animal; -- called also kymographion.
from The Century Dictionary and Cyclopedia
- n. An instrument by means of which variations of fluid pressure, as of the blood in some one of the vessels of a living animal, can be measured and graphically recorded.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. scientific instrument consisting of a rotating drum holding paper on which a stylus traces a continuous record (as of breathing or blood pressure)
Carl Ludwig (181695) perfected the kymograph, which became an invaluable measuring instrument for physiology.
A most excellent preservation of the record of the minor muscular movements is obtained by dipping the smoked paper on the kymograph drum in a solution of resin and alcohol.
The excursions of the tambour pointer as recorded on the smoked paper of the kymograph give a true picture of the respiration rate.
The chronoscope here measures the reaction times and association times in thousandths of a second; the kymograph, by the help of the sphygmograph, writes the record of the pulse and its changes in emotional states, while the pneumograph records the variations of breathing, and the plethysmograph shows the changes in the filling of blood vessels in the limbs which is immediately related to the blood supply of the brain.
The micrometer measurements in this case could be made at least as rapidly as measurements of kymograph curves.
The first of these consisted of a shallow Marey tambour, placed horizontally upon a table with its rubber film upwards, and connected by means of rubber-tubing with a pneumographic pen in contact with the revolving drum of a kymograph.
I recorded their middle finger reflexes using a kymograph.