The first two functional images of each participant were discarded to allow for magnetic saturation.
Twenty functional images with a thickness of 6 mm were acquired using the following parameters: TR, 2000 ms; TE, 48 ms; flip angle, 80°; FOV, 256×256 mm; and voxel size, 4×4×6 mm.
After spatial normalization to a final voxel size of 2*2*2 mm, functional images were smoothed with an isotropic 4-mm full-width half-maximum Gaussian kernel.
Each block contained six 4-s trials (a 3-s stimulus followed by a 1-s blank), for a total of 24 s (six functional images) per block.
One functional image volume of the brain was acquired every 4 s (TR = 4000 ms).
By Gary Marcus March 12 , 2013 Last week the Human Connectome Project, supported jointly by sixteen components of the National Institutes of Health, released its first set of data, a massive set of structural and functional images of the brains of sixty-eight adult volunteers — to almost no fanfare whatsoever.
Last week, the Human Connectome Project, supported jointly by sixteen components of the National Institutes of Health, released its first set of data, a massive set of structural and functional images of the brains of sixty-eight adult volunteers to almost no fanfare whatsoever.
The functional data of the two sessions of each subject were co-aligned directly (without an intermediate step through anatomical data) by aligning all data to the first functional image of the first scan session.
Thirty-two slices of functional images were acquired using blood oxygenation level dependent imaging (192 mm × 192 mm × 120 mm, in-plane resolution = 64 × 64, pixel size = 3 mm × 3 mm, thickness = 2.5 mm, 50% distance factor, TR = 2.08 s, TE = 30 ms), covering the entire cortex.
The AFM images indicated that the four functional groups consisted of the well-known (3 × 3 ) R30° structure unit, and the densities of four functional groups were 5 × 10/m [ 31].
