Biomedical Engineering Reference
In-Depth Information
Tension (g)
120
45
N
100
30 N
80
15
N
60
0
40
15 T
30
T
20
45 T
0
45 N
0
45
T
Eye Position (degrees)
FIGURE 13.14
Length-tension curves for lateral rectus muscle at different levels of activation. Dots represent
tension data recorded from the detached lateral rectus muscle during strabismus surgery, while the unoperated
eyeball fixated at targets from -45
to 45
.
Adapted from Collins et al. [8].
Tension (g)
Active-State Tension (g)
80
80
15º N
60
60
40
40
20
20
45º T
0
0
45º N
0
45º T
45º N
0
45º T
Eye Position (degrees)
Eye Position (degrees)
FIGURE 13.15
(Left) Length-tension curves for extraocular muscle at two levels of activation corresponding
to the 15
N and 45
T positions. The solid line represents tension data recorded from the detached lateral rectus
muscle during strabismus surgery, while the unoperated eyeball fixated at targets. The dashed curve is the
15
curve with the 45
curve (dashed-dot line) subtracted from it. The resultant dashed curve represents
the active-state tension as a function of eye position. (Right) The theoretical graph for active-state tension versus
eye position as given by Eq. (3.4.1).
Adapted from Collins et al. [8].
