The cortical activation effect of phonation on a motor task: a functional MRI study.
It is well-known that sound production can affect the motor system. We investigated whether a short, loud phonation affected cortical activation caused by a motor task using functional MRI. Fifteen right-handed healthy subjects were recruited for this study. We compared the cortical activation caused by the performance of a motor task (right hand grasp-release movements) to that caused by the performance of the motor task with phonation("ah" sound). We found that performance of the motor task with phonation resulted in less activation in the primary sensori-motor cortex than did the performance of the motor task alone. It seemed that phonation during the motor task enhanced the efficiency of cortical activation compared to that caused by the motor task alone.
Lee
Mi Young
MY
Department of Physical Therapy, College of Health and Therapy, Daegu Haany University, Daegu, Republic of Korea.
Kwon
Yong Hyun
YH
Park
Ji Won
JW
Choi
Jin Ho
JH
Son
Su Min
SM
Ahn
Sang Ho
SH
Cho
Yoon Woo
YW
Jang
Sung Ho
SH
D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000098:blood supply* / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007802:Language; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D010100:Oxygen / Q000097:blood; D010699:Phonation / Q000502:physiology*; D055815:Young Adult
D010100:Oxygen