title: The cortical activation effect of phonation on a motor task: a functional MRI study.
abstract: 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.
authors.affiliation: Department of Physical Therapy, College of Health and Therapy, Daegu Haany University, Daegu, Republic of Korea.
authors.forename: Mi Young
authors.initials: MY
authors.lastname: Lee
authors.forename: Yong Hyun
authors.initials: YH
authors.lastname: Kwon
authors.forename: Ji Won
authors.initials: JW
authors.lastname: Park
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Choi
authors.forename: Su Min
authors.initials: SM
authors.lastname: Son
authors.forename: Sang Ho
authors.initials: SH
authors.lastname: Ahn
authors.forename: Yoon Woo
authors.initials: YW
authors.lastname: Cho
authors.forename: Sung Ho
authors.initials: SH
authors.lastname: Jang
mesh_terms: 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
chemical_list: D010100:Oxygen