Fall 2002
Tuesdays 12:15 Goldwater 604
(Supported in part by the Systems Science and Engineering Research Center)
Seminar Schedule:<http://math.la.asu.edu/~tom/cognition/math+cogsched.html>
The Mathematics and Cognition will
present our next lecture on Tuesday, October 29, at 12:15 PM in GWC
604.
Our speaker will be Prof. Polemnia G. Amazeen of the Department of
Psychology,
who will speak on the topic:
"Locomotor-Respiratory Coupling"
Abstract.
| Locomotor-respiratory coupling describes the precise pacing of breathing during exercise as observed in low, simple motor to respiratory frequency ratios like 2:1, 3:1, and 4:1. Many studies have demonstrated locomotor-respiratory coupling during rhythmic activities that involve the lower limbs (e.g., running and bicycling) and upper limbs (e.g., rowing and wheelchair propulsion). Two studies will be presented that analyze locomotor-respiratory coupling during rhythmic arm movements. In the first, comparable patterns of coupling were observed for both experienced and novice wheelchair users. Increases in movement frequency caused a shift to larger-integer ratios that were also more variable. The second study replaced the complex, multi-joint movement patterns inherent in the wheelchair propulsion task with simple rotations about the shoulder joint. Major findings were replicated. Discussion will focus on the creation of a model system for the study of locomotor-respiratory coupling and predictions that can be made from the Farey tree. |