TY  - RPRT
TI  - Yawning: a possible confounding variable in EMG biofeedback studies.
AU  - R E Oman
AU  - S J Sullivan
AU  - J Fleury
AU  - E Dutil
PY  - 1989
DO  - 10.1007/bf00999125
UR  - https://pubmed.ncbi.nlm.nih.gov/2631974/
ID  - 2631974
ER  -