[Response by visual stimulation with the BOLD effect and motion artifact: identification of the activating signal and motion artifact].
This study used functional magnetic resonance imaging (fMRI) to evaluate brain function. fMRI data were collected by a block paradigm, and brain function was evaluated. However, irrelevant artifacts caused by the BOLD effect frequently occur in analytical processing. Therefore, there is a limit to obtaining an adequate activating reaction in the analytical system, which is normally equipped with MRI. However, there is a limit to obtaining a sufficient activating reaction in the analytical system, which is normally equipped with MRI. It has become standard practice to use an analytical system such as statistical parametric mapping (SPM). The response of movement of cerebrospinal fluid (CSF) artifact is high. Therefore, disappearance of the CSF artifact was done by statistical analysis. Then, the response of the signal from the beginning of stimulation was examined. As a result, the activating signal and the artifact signal could be identified.
Maeno
Masato
M
Medical Imaging Center, National Rehabilitation Center for Persons with Disabilities.
Uchida
Kenya
K
Ishida
Tomohiro
T
Ishihara
Shinya
S
Koinuma
Takeshi
T
Magatani
Kazushige
K
Yanasima
Kenji
K
D000328:Adult; D016477:Artifacts; D001921:Brain / Q000502:physiology*; D002555:Cerebrospinal Fluid; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D010775:Photic Stimulation; D013995:Time
D010100:Oxygen