Voluntary Finger Movements as Evidenced by Magnetoencephalography and fMRI
نویسندگان
چکیده
منابع مشابه
Cortical Activation During Levitation and Tentacular Movements of Corticobasal Syndrome
Levitation and tentacular movements (LTM) are considered specific, yet rare (30%), features of Corticobasal Syndrome (CBS), and are erroneously classified as alien hand. Our study focuses on these typical involuntary movements and aims to highlight possible neural correlates.LTM were recognizable during functional magnetic resonance imaging (fMRI) in 4 of 19 CBS patients. FMRI activity was eval...
متن کاملBeamformer Source Analysis and Connectivity on Concurrent EEG and MEG Data during Voluntary Movements
Electroencephalography (EEG) and magnetoencephalography (MEG) are the two modalities for measuring neuronal dynamics at a millisecond temporal resolution. Different source analysis methods, to locate the dipoles in the brain from which these dynamics originate, have been readily applied to both modalities alone. However, direct comparisons and possible advantages of combining both modalities ha...
متن کاملحرکت ارادی پتانسیل های ناشی از قشر حسی پیکری را تعدیل می کند
An early component of the somatosensory evoked potential, arising from the primary sensory cortex in man is attenuated during voluntary finger movement. The median nerve at the wrist was stimulated while the subject performed fractionated finger movements with the same hand. Subcortical components of the somatosensory evoked potential were not changed but the P25 cortical component was attenuat...
متن کاملCombined MEG and fMRI model
An integrated model for magnetoencephalography (MEG) and functional Magnetic Resonance Imaging (fMRI) is proposed. In the proposed model, MEG and fMRI outputs are related to the corresponding aspects of neural activities in a voxel. Post synaptic potentials (PSPs) and action potentials (APs) are two main signals generated by neural activities. In the model, both of MEG and fMRI are related to t...
متن کاملOn somatotopic representation centers for finger movements in human primary motor cortex and supplementary motor area.
We used functional magnetic resonance imaging to examine the representation pattern for repetitive voluntary finger movements in the primary motor cortex (M1) and the supplementary motor area (SMA) of humans. Healthy right-handed participants performed repetitive individuated flexion-extension movements of digits 1, 2, and 3 using the dominant hand. Contralateral functional labeling for the gro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001