Biomedical Engineering Reference
In-Depth Information
and others are involved in the gating of the airflow. The findings reported
in [Goller and Suthers 1995] indicate that it is only in the case of the gating
muscles that the activity is lateralized. The other syringeal muscles are active
on both sides of the syrinx.
According to our models, the vocalization is largely determined by the
phase differences between the gestures affecting tension and pressure. It
is then natural to ask about lateralization of the muscle activity involved
in the control of the air sac pressure. In [Goller and Suthers 1999], it was
investigated whether the activity of respiratory muscles reflected the later-
alized activity of the vocal organ during the production of birdsong. Those
authors found that the activity was always present, independently of whether
the song was produced by one or both sides of the syrinx.
