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295512 occurrences (No.81 in the rank) during 5 years in the PubMed. [no cache] 500 found

329) This finding supports the less-wiring-more-firing hypothesis, which provides a testable account of compensatory over-recruitment in OAs.

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PMID:24152545 DOI:10.1093/cercor/bht289

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

* Less wiring, more firing: low-performing older adults compensate for impaired white matter with greater neural activity.

- The reliable neuroimaging finding that older adults often show greater activity (over-recruitment) than younger adults is typically attributed to compensation. Yet, the neural mechanisms of over-recruitment in older adults (OAs) are largely unknown. Rodent electrophysiology studies have shown that as number of afferent fibers within a circuit decreases with age, the fibers that remain show higher synaptic field potentials (less wiring, more firing). Extrapolating to system-level measures in humans, we proposed and tested the hypothesis that greater activity in OAs compensates for impaired white-matter connectivity. Using a neuropsychological test battery, we measured individual differences in executive functions associated with the prefrontal cortex (PFC) and memory functions associated with the medial temporal lobes (MTLs). Using event-related functional magnetic resonance imaging, we compared activity for successful versus unsuccessful trials during a source memory task. Finally, we measured white-matter integrity using diffusion tensor imaging. The study yielded 3 main findings. First, low-executive OAs showed greater success-related activity in the PFC, whereas low-memory OAs showed greater success-related activity in the MTLs. Second, low-executive OAs displayed white-matter deficits in the PFC, whereas low-memory OAs displayed white-matter deficits in the MTLs. Finally, in both prefrontal and MTL regions, white-matter decline and success-related activations occurred in close proximity and were negatively correlated. This finding supports the less-wiring-more-firing hypothesis, which provides a testable account of compensatory over-recruitment in OAs.

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[frequency of next (right) word to over]

(1)145 the	(8)6 their	(15)3 four	(22)2 40
(2)70 time	(9)4 6	(16)3 longer	(23)2 OP
(3)67 a	(10)4 in	(17)3 other	(24)2 another
(4)12 time,	(11)3 1	(18)3 placebo	(25)2 collagen)
(5)9 of	(12)3 12	(19)2 2	(26)2 left
(6)7 and	(13)3 24	(20)2 30	(27)2 long
(7)6 an	(14)3 65	(21)2 4	(28)2 settlement

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--- WordNet output for over --- =>1.超えて, 一面に, 移って, 始めから終わりまで, 終わって, を支配して, の間, しながら, 倒れて, の上に, を覆って, を越えて, の向こう側に, より多く, 2.もう一度, 繰り返して Overview of noun over The noun over has 1 sense (no senses from tagged texts) 1. over -- ((cricket) the division of play during which six balls are bowled at the batsman by one player from the other team from the same end of the pitch) Overview of adj over The adj over has 1 sense (first 1 from tagged texts) 1. (21) complete, concluded, ended, over, all over, terminated -- (having come or been brought to a conclusion; "the harvesting was complete"; "the affair is over, ended, finished"; "the abruptly terminated interview") Overview of adv over The adv over has 5 senses (first 3 from tagged texts) 1. (23) over -- (at or to a point across intervening space etc.; "come over and see us some time"; "over there") 2. (2) over -- (throughout an area; "he is known the world over") 3. (1) over, o'er -- (throughout a period of time; "stay over the weekend") 4. over -- (beyond the top or upper surface or edge; forward from an upright position; "a roof that hangs over";) 5. all over, over -- (over the entire area; "the wallpaper was covered all over with flowers"; "she ached all over"; "everything was dusted over with a fine layer of soot") --- WordNet end ---