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Myocardī′tis, inflammation of the myocardium; Myocar′dium, the muscular substance of the heart; Myodynā′mia, muscular force; My′ogram, the tracing of a contracting and relaxing muscle by the myograph; My′ograph, an instrument for noting and recording muscular contractions.—adjs.

Myograph′ic, -al, relating to myography.—ns.

Never was the human body as a machine so understood, never did it give such an account of itself, as it now does in the legible handwriting of the cardiograph, the sphygmograph, the myograph, and other self-registering contrivances, with all of which the student of to-day is expected to be practically familiar.

Fick’s pendulum myograph or muscle-trace recorder is described in Vierteljahrsschr. der naturforsch.

Mechanical response—Different kinds of stimuli—Myograph—Characteristics of response-curve: period, amplitude, form—Modification of response-curves.