ISSN:
1573-3270
Keywords:
EMG
;
EMG biofeedback
;
hemiplegia
;
yawning
;
associated reactions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract An elderly hemiplegic patient participating in an EMG biofeedback training program was observed to produce a synergistic flexion movement of the plegic (determined by functional evaluations) upper limb while yawning. In the course of the training sessions the electrical activity of the anterior deltoid (the target muscle) was recorded during yawning. These peak EMG values were greatly facilitated in comparison with the session mean peak values obtained during an attempted maximum voluntary isometric contraction (shoulder flexion) of the same limb (e.g., Trial 1: 85.00 vs. 4.33 µV). The possibility of yawning as a confounding variable in EMG biofeedback studies is presented and discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00999125
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