'squares completion' is a correct and usable phrase in written English.
It is most commonly used to describe completing a task or activity that requires doing something with each item in a set. For example: "It took me several hours to squares completion of the word search puzzle."
Each block had the subject perform under one of three conditions: motor, matching, and square completion.
The square completion vs. matching contrast failed to show activation at the uncorrected P < 0.005 threshold for individual voxels.
The motor condition provides control for motor, attention, and primary visual elements of the matching and square completion conditions.
Performance on both 2-back and VCA square completion fMRI tasks was particularly poor for the NCD group raising concern about motivation.
One run of the VCA paradigm consisted of eighteen blocks; six motor, six matching, and six square completion conditions, with the block order pseudo-randomized and balanced.
There were also trends in differential brain activation in the basal ganglia between groups for the square completion vs. motor contrast.
While the contrasts of matching vs. motor conditions and square completion vs. motor conditions both delineate brain activation involving visuoconstruction, the contrast between the square completion vs. matching conditions further controls for purely perceptual function to focus on constructional ability [ 12].
For the square completion condition participants were asked to judge if the two shapes could be fitted together to form a complete square, again without flipping either shape, although shapes might have to be rotated.
fMRI, functional magnetic resonance imaging; CPT-IP: continuous performance task-identical pairs; VCA, visuoconstructive ability; SC, square completion; L, left; R, right; inf, inferior; sup, superior; mid, middle; SMA, supplementary motor area.
Conversely, compared to the noNCD-group, the NCD-group had a significantly lower correct response rate for the 2-back working memory fMRI task (25% ± 15% for the NCD-group vs. 64% ± 22% for the noNCD-group; P < 0.0003) and the square completion condition that is part of the VCA fMRI task (47% ± 12% for the NCD-group vs. 63% ± 19% for the noNCD-group; P < 0.03).
