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267449 occurrences (No.100 in the rank) during 5 years in the PubMed. [no cache] 500 found

325) Recent experimental evidence suggests a finer genetic, structural and functional subdivision of the layers which form a cortical column.

--- ABSTRACT ---

PMID:24569853 DOI:10.1007/s00429-014-0726-8

2015 Brain structure & function

* A gradual depth-dependent change in connectivity features of supragranular pyramidal cells in rat barrel cortex.

- Recent experimental evidence suggests a finer genetic, structural and functional subdivision of the layers which form a cortical column. The classical layer II/III (LII/III) of rodent neocortex integrates ascending sensory information with contextual cortical information for behavioral read-out. We systematically investigated to which extent regular-spiking supragranular pyramidal neurons, located at different depths within the cortex, show different input-output connectivity patterns. Combining glutamate uncaging with whole-cell recordings and biocytin filling, we revealed a novel cellular organization of LII/III: (1) "Lower LII/III" pyramidal cells receive a very strong excitatory input from lemniscal LIV and much fewer inputs from paralemniscal LVa. They project to all layers of the home column, including a feedback projection to LIV, whereas transcolumnar projections are relatively sparse. (2) "Upper LII/III" pyramidal cells also receive their strongest input from LIV, but in addition, a very strong and dense excitatory input from LVa. They project extensively to LII/III as well as LVa and Vb of their home and neighboring columns. (3) "Middle LII/III" pyramidal cell shows an intermediate connectivity phenotype that stands in many ways in between the features described for lower versus upper LII/III. "Lower LII/III" intracolumnarly segregates and transcolumnarly integrates lemniscal information, whereas "upper LII/III" seems to integrate lemniscal with paralemniscal information. This suggests a fine-grained functional subdivision of the supragranular compartment containing multiple circuits without any obvious cytoarchitectonic, other structural or functional correlate of a laminar border in rodent barrel cortex.

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[frequency of next (right) word to functional]

(1)50 magnetic	(18)4 gastrointestinal	(35)3 integration	(52)2 connections
(2)38 connectivity	(19)4 outcome	(36)3 interactions	(53)2 differentiation
(3)29 and	(20)4 outcomes	(37)3 movement	(54)2 domains
(4)8 limitations	(21)4 relationships	(38)3 single	(55)2 endurance
(5)7 network	(22)4 unit	(39)3 status	(56)2 health
(6)7 recovery	(23)3 Assessment	(40)3 status,	(57)2 imaging
(7)7 role	(24)3 MRI	(41)3 studies	(58)2 impact
(8)6 changes	(25)3 Well-Being	(42)2 CD133	(59)2 integrity
(9)6 results	(26)3 activation	(43)2 HL	(60)2 losses
(10)5 alterations	(27)3 brain	(44)2 ability	(61)2 networks
(11)5 limitation	(28)3 consequences	(45)2 activity	(62)2 neuronal
(12)5 neuroimaging	(29)3 coupling	(46)2 analyses	(63)2 organization
(13)5 properties	(30)3 decline	(47)2 as	(64)2 parameters
(14)5 theory	(31)3 deficits	(48)2 assays	(65)2 roles
(15)4 capacity	(32)3 differences	(49)2 assessment	(66)2 significance
(16)4 connectivity,	(33)3 impairment	(50)2 characteristics	(67)2 specialization
(17)4 foods	(34)3 improvement	(51)2 cognitive

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--- WordNet output for functional --- =>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 ---