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611425 occurrences (No.13 in the rank) during 5 years in the PubMed. [no cache] 500 found

98) (2) Left inferior frontal gyrus, intraparietal sulcus, and anterior cingulate cortex parametrically decreased activation as anticipated task difficulty increased.

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PMID:24092642 DOI:10.1093/cercor/bht262

2015 Cerebral cortex (New York, N.Y. : 1991)

* He who is well prepared has half won the battle: an FMRI study of task preparation.

- The neural mechanism underlying preparation for tasks that vary in difficulty has not been explored. This functional magnetic resonance imaging study manipulated task difficulty by varying the working memory (WM) load of the n-back task. Each n-back task block was preceded by a preparation period involving a screen that indicated the level of difficulty of the upcoming task. Consistent with previous work, activation in some brain regions depended on WM load in the task. These regions were used as regions of interest for the univariate and multivariate (classification) analyses of preparation periods. The findings were that the patterns of brain activation during task preparation contain information about the upcoming task difficulty. (1) A support vector machine classifier was able to decode the n-back task difficulty from the patterns of brain activation during task preparation. Those individuals whose activation patterns for anticipated 1- versus 2- versus 3-back conditions were classified with higher accuracy showed better behavioral performance on the task, suggesting that task performance depends on task preparation. (2) Left inferior frontal gyrus, intraparietal sulcus, and anterior cingulate cortex parametrically decreased activation as anticipated task difficulty increased. Taken together, these results suggest dynamic involvement of the WM network not only during WM task performance, but also during task preparation.

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(1)36 the	(14)5 to	(27)2 RDW	(40)2 likelihood
(2)34 in	(15)4 after	(28)2 awareness	(41)2 maternal
(3)27 risk	(16)4 as	(29)2 bone	(42)2 morbidity
(4)21 null	(17)3 activity	(30)2 but	(43)2 number
(5)20 with	(18)3 among	(31)2 compared	(44)2 over
(6)16 by	(19)3 at	(32)2 concentrations	(45)2 pre-stimulus
(7)15 significantly	(20)3 cell	(33)2 drug	(46)2 production
(8)6 and	(21)3 level	(34)2 during	(47)2 rapidly
(9)6 expression	(22)3 levels	(35)2 fax	(48)2 use
(10)6 from	(23)3 physical	(36)2 functional	(49)2 vascular
(11)5 activation	(24)3 sensitivity	(37)2 hepatic
(12)5 odds	(25)2 MI	(38)2 if
(13)5 serum	(26)2 Math1	(39)2 interest

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--- WordNet output for increased --- =>力の増加 Overview of verb increase The verb increase has 2 senses (first 2 from tagged texts) 1. (86) increase -- (become bigger or greater in amount; "The amount of work increased") 2. (61) increase -- (make bigger or more; "The boss finally increased her salary"; "The university increased the number of students it admitted") Overview of adj increased The adj increased has 1 sense (first 1 from tagged texts) 1. (30) increased -- (made greater in size or amount or degree) --- WordNet end ---