41,175 Hits in 7.4 sec

Complex activity patterns generated by short-term synaptic plasticity [article]

Bulcsú Sándor, Claudius Gros
2018 arXiv   pre-print
Short-term synaptic plasticity (STSP) affects the efficiency of synaptic transmission for persistent presynaptic activities.  ...  We show that STSP may transform these attracting states into attractor relics, inducing ongoing transient-state dynamics in terms of sequences of transiently activated cell assemblies, the former attractors  ...  Complex activity patterns generated by random networks Considering larger networks, we show in Fig. 4 that transient-state dynamics emerges generically out of fixpoint states when STSP is turned on.  ... 
arXiv:1803.05369v1 fatcat:2k2mtvbmabe3hiwu6w3bvpwjea

Short-Term Synaptic Plasticity in Central Pattern Generators [chapter]

Diana Martinez, Victor Matveev, Farzan Nadim
2014 Encyclopedia of Computational Neuroscience  
Acknowledgement This work was supported in part by grant MH060605. NIH  ...  Short-Term Synaptic Plasticity in Central Pattern Generators Synonyms Augmentation; ; ; ; Depression Enhancement Facilitation Post-tetanic potentiation Definition Short-term synaptic plasticity  ...  Finally, it is also possible that this 2+ 2+ 2013 2013 Diana Martinez, Victor Matveev and PhD Farzan Nadim Short-Term Synaptic Plasticity in Central Pattern Generators 8 May 2014 04:10 http:  ... 
doi:10.1007/978-1-4614-7320-6_467-1 fatcat:hil44m2fybex7ln3izgism6hwi

A novel learning rule for long-term plasticity of short-term synaptic plasticity enhances temporal processing

Tiago P. Carvalho
2011 Frontiers in Integrative Neuroscience  
Although LTP results in little or no alteration in STP in CA1 synapses, STP of neocortical synapses changes after the induction of LTP or LTD It is well established that short-term synaptic plasticity  ...  (STP) of neocortical synapses is itself plastic -e.g., the induction of LTP and LTD tend to shift STP towards short-term depression and facilitation, respectively.  ...  Carvalho and Buonomano Plasticity of short-term synaptic plasticity Frontiers in Integrative Neuroscience are generally firing to the reverse of their target pattern.  ... 
doi:10.3389/fnint.2011.00020 pmid:21660100 pmcid:PMC3105243 fatcat:jvydgzinvbdp3o7yept542kfre

Developmental Decrease in Short-Term Facilitation at Schaffer Collateral Synapses in Hippocampus Is mGluR1 Sensitive

Haley E. Speed, Lynn E. Dobrunz
2008 Journal of Neurophysiology  
Addition of the mGluR1 antagonist LY367385 increases short-term facilitation in response to the natural stimulus pattern, showing that mGluR1 is activated by synaptically released glutamate.  ...  Developmental changes can occur in the dynamic properties of synapses, known as short-term plasticity.  ...  in both synaptic efficacy and short-term plasticity.  ... 
doi:10.1152/jn.00625.2007 pmid:18032567 fatcat:7yljodd7kzeh7hiicyhn5kvsvu

The role of short-term synaptic dynamics in motor control

F Nadim
2000 Current Opinion in Neurobiology  
Acknowledgements The authors are grateful to Jordan Hague for reading a draft of this manuscript, and were supported by the Alfred P Sloan Foundation (F Nadim) and the Israel Science Foundation 314/99-  ...  Short-term synaptic plasticity can also be used to dynamically select between different motor patterns.  ...  Different types of short-term synaptic plasticity First, it is important that we define what 'short-term' means in the context of synaptic plasticity.  ... 
doi:10.1016/s0959-4388(00)00159-8 pmid:11240276 fatcat:nk2xfwlmqrc7dft3ocgnarxtne

Short-term synaptic plasticity as a temporal filter

Eric S. Fortune, Gary J. Rose
2001 Trends in Neurosciences  
This problem can be circumvented, however, by activation of short-term synaptic facilitation that maintains responses to low-temporal frequency information.  ...  Such short-term plasticity might also contribute to spatio-temporal processing.  ...  Opinion a Zucker, R.S. (1989) Short-term synaptic plasticity. Annu. Rev. Neurosci. 12, 13-31 b Zucker, R.S. (1999) Calcium-and activity-dependent synaptic plasticity. Curr. Opin.  ... 
doi:10.1016/s0166-2236(00)01835-x pmid:11410267 fatcat:imochlqy6zgbnnjcbyy6bqerjm

Thematic Minireview Series: Molecular Mechanisms of Synaptic Plasticity

Roger J. Colbran
2015 Journal of Biological Chemistry  
In general, short bursts of intense (e.g. high frequency) synaptic stimulation result in Ca 2ϩ influx via NMDA-type glutamate receptors to enhance AMPA receptor-mediated synaptic transmission, a process  ...  Normal glutamatergic synaptic transmission is mediated by Na ϩ influx through AMPA-type glutamate receptors, and synaptic plasticity involves sustained changes in the activity of synaptic AMPA receptors  ...  In general, short bursts of intense (e.g. high frequency) synaptic stimulation result in Ca 2ϩ influx via NMDA-type glutamate receptors to enhance AMPA receptor-mediated synaptic transmission, a process  ... 
doi:10.1074/jbc.r115.696468 pmid:26453312 pmcid:PMC4661373 fatcat:d35jv54c5rdh7hqczw5u7ppydi

Assortment of GABAergic Plasticity in the Cortical Interneuron Melting Pot

Pablo Méndez, Alberto Bacci
2011 Neural Plasticity  
Here, some aspects related to plasticity and modulation of adult cortical and hippocampal GABAergic synaptic transmission will be reviewed, aiming at providing a fresh perspective towards the elucidation  ...  Recent studies showed that similarly to their excitatory (glutamatergic) counterparts, also inhibitory synapses can undergo activity-dependent changes in their strength.  ...  Work in our lab is supported by the Giovanni Armenise-  ... 
doi:10.1155/2011/976856 pmid:21785736 pmcid:PMC3139185 fatcat:zd5edo6rtfa4zeikmayga7ygwy

How Do Short-Term Changes at Synapses Fine-Tune Information Processing?

A. Klug, J. G. G. Borst, B. A. Carlson, C. Kopp-Scheinpflug, V. A. Klyachko, M. A. Xu-Friedman
2012 Journal of Neuroscience  
This phenomenon is called "short-term synaptic plasticity" and is shown at all synapses.  ...  This review will attempt to go beyond this view and discuss how, on one hand, complex neuronal activity affects the short-term state of synapses, but also how these dynamic changes in synaptic strength  ...  Such dynamic changes, generally termed "short-term synaptic plasticity" (STP), can last from milliseconds to tens of seconds.  ... 
doi:10.1523/jneurosci.3348-12.2012 pmid:23055473 pmcid:PMC3488594 fatcat:q264gkzfp5ddxpvmnscxkgqhqi

Synaptic plasticity as a cortical coding scheme

Robert C Froemke, Christoph E Schreiner
2015 Current Opinion in Neurobiology  
Consequently, patterns of activity in cortical networks have complex dynamics over a wide range of timescales, from milliseconds to days and longer.  ...  In the primary auditory cortex (AI), multiple forms of adaptation and plasticity shape synaptic input and action potential output.  ...  Acknowledgments This work was funded by NIDCD (DC009635 and DC012557), a Hirschl/Weill-Caulier Career Research Award and a Sloan Research Fellowship to R.C.F.; and NIDCD (DC02260) to C.E.S.  ... 
doi:10.1016/j.conb.2015.10.003 pmid:26497430 pmcid:PMC4641776 fatcat:dlacy4h6n5fwdo7gmsx27spitu

Estimating short-term synaptic plasticity from pre- and postsynaptic spiking

Abed Ghanbari, Aleksey Malyshev, Maxim Volgushev, Ian H. Stevenson, Jakob H. Macke
2017 PLoS Computational Biology  
Short-term synaptic plasticity (STP) refers to changes in synaptic strengths on timescales ranging from a few milliseconds to a few seconds.  ...  We developed a model-based approach for decomposing the short-term changes in the probability of a postsynaptic spike into four components: 1) short-term synaptic plasticity, 2) integration of PSPs, 3)  ...  AG, NR, and IHS were supported by NSF CAREER 1651396 to IHS.  ... 
doi:10.1371/journal.pcbi.1005738 pmid:28873406 pmcid:PMC5600391 fatcat:vjf6ebm3fnaofebkzh7kucgqty

Short-Term Synaptic Plasticity as a Mechanism for Sensory Timing

Helen Motanis, Michael J Seay, Dean V Buonomano
2018 Trends in Neurosciences  
Because the time constants of many time-varying neural and synaptic properties, including short-term synaptic plasticity (STP), are also in the range of tens to hundreds of milliseconds, they are strong  ...  Converging evidence suggests that some forms of temporal selectivity emerge from the dynamic changes in the balance of excitation and inhibition imposed by STP.  ...  • How does diversity of short-term plasticity relate to diversity in coding of temporal features? • How is short-term plasticity regulated by development and sensory experience?  ... 
doi:10.1016/j.tins.2018.08.001 pmid:30274605 pmcid:PMC6171349 fatcat:iv5u4upr7ndwhd6jpekb52gjry

Short Term Depression Unmasks the Ghost Frequency

Tjeerd V. olde Scheper, Huibert D. Mansvelder, Arjen van Ooyen, Marcus Kaiser
2012 PLoS ONE  
Short Term Plasticity (STP) has been shown to exist extensively in synapses throughout the brain.  ...  Its function is more or less clear in the sense that it alters the probability of synaptic transmission at short time scales.  ...  Methods Dynamic Short Term Plasticity Model The aim of the dynamic short term plasticity model is to define a simple representation of synaptic plasticity that allows temporal adjustments.  ... 
doi:10.1371/journal.pone.0050189 pmid:23227159 pmcid:PMC3515566 fatcat:a7d7uacjyrg3zacpyemhhkx634

Plasticity of Neuron-Glial Transmission: Equipping Glia for Long-Term Integration of Network Activity

Wayne Croft, Katharine L. Dobson, Tomas C. Bellamy
2015 Neural Plasticity  
We argue that induction of glial plasticity typically requires repetitive neuronal firing over long time periods (minutes-hours) rather than the short-lived, stereotyped trigger typical of canonical long-term  ...  In recent years, glial cells (most notably astrocytes) have been recognized as active participants in the modulation of synaptic transmission and synaptic plasticity, implicating these electrically nonexcitable  ...  While short-term plasticity resembles the synaptic pattern in many respects, long-term plasticity is strikingly distinct.  ... 
doi:10.1155/2015/765792 pmid:26339509 pmcid:PMC4539116 fatcat:aq5du5qddrhxlbehowbj6fy57i

Time scales of memory, learning, and plasticity

Christian Tetzlaff, Christoph Kolodziejski, Irene Markelic, Florentin Wörgötter
2012 Biological cybernetics  
If these neural networks are stimulated by an input, then the complexity "stores" the input in the neural network's activity pattern for a certain duration.  ...  In attractor networks, the activation of previously learned activity patterns are also interpreted as working-memory items (Barbieri and Brunel 2008; Rolls 2010 ). (5) Long-/short-term memory-long-term  ... 
doi:10.1007/s00422-012-0529-z pmid:23160712 fatcat:rnvo3trbdzaxror3kao2ek5rly
« Previous Showing results 1 — 15 out of 41,175 results