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nlme (version 3.1-149)

Muscle: Contraction of heart muscle sections

Description

The Muscle data frame has 60 rows and 3 columns.

Arguments

Format

This data frame contains the following columns:

Strip

an ordered factor indicating the strip of muscle being measured.

conc

a numeric vector giving the concentration of CaCl2

length

a numeric vector giving the shortening of the heart muscle strip.

Details

Baumann and Waldvogel (1963) describe data on the shortening of heart muscle strips dipped in a \(\mbox{CaCl}{}_2\) solution. The muscle strips are taken from the left auricle of a rat's heart.