ELIZA

return kwic search for activity out of >500 occurrences
475194 occurrences (No.33 in the rank) during 5 years in the PubMed. [cache]

29) We describe how synaptic short-term plasticity (STP) modulates the output of presynaptic populations as a function of the distribution of the spiking activity and find a strong relationship between STP features and sparseness of the population code, which could solve this problem.

--- ABSTRACT ---

PMID:33579731 DOI:10.1523/ENEURO.0297-20.2021

2021 eNeuro

* Short-Term Synaptic Plasticity Makes Neurons Sensitive to the Distribution of Presynaptic Population Firing Rates.

- The ability to discriminate spikes that encode a particular stimulus from spikes produced by background activity is essential for reliable information processing in the brain. We describe how synaptic short-term plasticity (STP) modulates the output of presynaptic populations as a function of the distribution of the spiking activity and find a strong relationship between STP features and sparseness of the population code, which could solve this problem. Furthermore, we show that feedforward excitation followed by inhibition (FF-EI), combined with target-dependent STP, promote substantial increase in the signal gain even for considerable deviations from the optimal conditions, granting robustness to this mechanism. A simulated neuron driven by a spiking FF-EI network is reliably modulated as predicted by a rate analysis and inherits the ability to differentiate sparse signals from dense background activity changes of the same magnitude, even at very low signal-to-noise conditions. We propose that the STP-based distribution discrimination is likely a latent function in several regions such as the cerebellum and the hippocampus.

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(1)69 and	(13)5 are	(25)3 interventions	(37)2 effect;
(2)46 of	(14)5 or	(26)3 limitations	(38)2 for
(3)45 in	(15)5 relationship	(27)3 models	(39)2 has
(4)44 null	(16)5 with	(28)3 opportunities	(40)2 increased
(5)14 was	(17)4 and/or	(29)3 programs	(41)2 levels
(6)13 against	(18)4 at	(30)3 sedentary	(42)2 levels,
(7)12 (PA)	(19)4 may	(31)3 that	(43)2 plays
(8)10 is	(20)3 (PA),	(32)3 through	(44)2 programmes
(9)7 as	(21)3 advice	(33)2 appears	(45)2 using
(10)6 by	(22)3 but	(34)2 assessment
(11)6 during	(23)3 changes	(35)2 counselling
(12)6 on	(24)3 compared	(36)2 differentiation

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--- WordNet output for activity --- =>活動, 活躍, 働き, 動き, 活気 Overview of noun activity The noun activity has 6 senses (first 3 from tagged texts) 1. (43) activity -- (any specific behavior; "they avoided all recreational activity") 2. (36) action, activity, activeness -- (the state of being active; "his sphere of activity"; "he is out of action") 3. (13) bodily process, body process, bodily function, activity -- (an organic process that takes place in the body; "respiratory activity") 4. activity -- ((chemistry) the capacity of a substance to take part in a chemical reaction; "catalytic activity") 5. natural process, natural action, action, activity -- (a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity") 6. activeness, activity -- (the trait of being active; moving or acting rapidly and energetically; "the level of activity declines with age") --- WordNet end ---