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21) Next, 2 sets of brain regions were identified as showing functional magnetic resonance imaging blood oxygen level-dependent activity that maps onto the 2-mechanism distinction.
* Separable roles for attentional control sub-systems in reading tasks: a combined behavioral and fMRI study.
- Attentional control is important both for learning to read and for performing difficult reading tasks. A previous study invoked 2 mechanisms to explain reaction time (RT) differences between reading tasks with variable attentional demands. The present study combined behavioral and neuroimaging measures to test the hypotheses that there are 2 mechanisms of interaction between attentional control and reading; that these mechanisms are dissociable both behaviorally and neuro-anatomically; and that the 2 mechanisms involve functionally separable control systems. First, RT evidence was found in support of the 2-mechanism model, corroborating the previous study. Next, 2 sets of brain regions were identified as showing functional magnetic resonance imaging blood oxygen level-dependent activity that maps onto the 2-mechanism distinction. One set included bilateral Cingulo-opercular regions and mostly right-lateralized Dorsal Attention regions (CO/DA+). This CO/DA+ region set showed response properties consistent with a role in reporting which processing pathway (phonological or lexical) was biased for a particular trial. A second set was composed primarily of left-lateralized Frontal-parietal (FP) regions. Its signal properties were consistent with a role in response checking. These results demonstrate how the subcomponents of attentional control interact with subcomponents of reading processes in healthy young adults.
=>機能の, 関数の, 機能する, 機能上の, 実用的な, 機能的な
Overview of adj functional
The adj functional has 6 senses (first 2 from tagged texts)
1. (3) functional -- (designed for or capable of a particular function or use; "a style of writing
in which every word is functional"; "functional architecture")
2. (1) functional -- (involving or affecting function rather than physiology; "functional deafness")
3. functional -- (relating to or based on function especially as opposed to structure; "the problem
now is not a constitutional one; it is a functional one"; "delegates elected on a functional rather
than a geographical basis")
4. functional, usable, useable, operable, operational -- (fit or ready for use or service; "the
toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still
usable"; "an operational aircraft"; "the dishwasher is now in working order")
5. functional -- (designed for or adapted to a function or use; "functional education selects
knowledge that is concrete and usable rather than abstract and theoretical"; "functional
architecture")
6. running, operative, functional, working -- ((of e.g. a machine) performing or capable of
performing; "in running (or working) order"; "a functional set of brakes")
--- WordNet end ---