fMRI full experiment 3000 microTesla part 2

fMRI full experiment 3000 microTesla part

Pre-exposure finger tapping averaged activation map of the contralateral motor cortex regions (top row) and the ipsilateral cerebellum (bottom row) for 20 participants for the full study at 3000 μT.

<p>The contralateral motor cortex images (top row) presented are centered on the Talairach coordinates corresponding to S1 (x = -41, y = -31, z = 53) for the motor cortex region. The ipsilateral cerebellum images (bottom row) presented are centered on the Talairach coordinates corresponding to the anterior lobe of the ipsilateral cerebellum (x = 18, 7 = -47, z = -15).</p

fMRI_Pilot_1800_microTesla_DICOM part 1

fMRI_Pilot_1800_microTesla_DICOM part 1-2: MRI and fMRI DICOM images corresponding to the pilot study conducted with a 1800 microTesla exposure These DICOM files have been produced by a Siemens 1.5T Avanto (Siemens, Germany) MRI, as described in the paper. DICOM is a standard format for MRI images, and these can be analyzed with software packages such as BrainVoyager (Brain Innovation, The Netherlands), which we have used in the paper; or an open-access software package such as FSL (http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/). The analysis procedure for the fMRI data is fully described in the Methods section of the paper. DICOM files are available for each subject pre- and post-exposure, for each of the two tasks presented in the paper (finger tapping and mental rotation). Please feel free to contact the authors if further guidance is required

Comparison of the magnetic induction power spectrum for the 60 Hz and BOLD sequences.

<p>Comparison of the magnetic induction power spectrum for the 60 Hz and BOLD sequences.</p

Activation in the left intraparietal sulcus during the mental rotation task.

<p>Top) Pre-exposure (N = 21); Middle) Post- minus pre- exposure in the control group (N = 11); Bottom) Post- minus pre- exposure in the 60 Hz MF exposure group (N = 10). Results centered on the point of Talairach coordinates (X = -30, Y = -84, Z = 18).</p

Magnetic field gradient.

<p>The maximal MF level was obtained at the cortical level. The variation of the MF intensity depends on the position along the bore Z-axis and is shown in red. The MF intensity delivered by the gradient coil linearly decreases to reach zero at the isocentre (at the level of the first cervical vertebrae).</p

Functional brain activation—anterior cingulate cortex.

<p>AC: Top row—Tapping: pre-exposure group image (N = 9). Middle row—Tapping: post- minus pre-exposure condition (control, N = 5). Bottom row—Tapping: post- minus pre-exposure condition (60 Hz MF, N = 4). Results centered on the point of Talairach coordinates (X = -7, Y = -6, Z = 39).</p

Time series of the magnetic induction measured during the 60 Hz and BOLD sequences.

<p>Time series of the magnetic induction measured during the 60 Hz and BOLD sequences.</p

Activation in the right occipital cortex during the mental rotation task.

<p>Top) Pre-exposure (N = 21); Middle) Post- minus pre- exposure in the control group (N = 11); Bottom) Post- minus pre- exposure in the 60 Hz MF exposure group (N = 10). Results centered on the point of Talairach coordinates (X = 27, Y = -59, Z = -23).</p

Activation in the posterior cingulate during the mental rotation task.

<p>Top) Pre-exposure (N = 21); Middle) Post- minus pre- exposure in the control group (N = 11); Bottom) Post- minus pre- exposure in the 60 Hz MF exposure group (N = 10). Results centered on the point of Talairach coordinates (X = -5, Y = -53, Z = 16).</p