Slowness: An Objective for Spike-Timing–Dependent Plasticity?
نویسندگان
چکیده
منابع مشابه
Slowness: An Objective for Spike-Timing–Dependent Plasticity?
Our nervous system can efficiently recognize objects in spite of changes in contextual variables such as perspective or lighting conditions. Several lines of research have proposed that this ability for invariant recognition is learned by exploiting the fact that object identities typically vary more slowly in time than contextual variables or noise. Here, we study the question of how this "tem...
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Long-term modification of synaptic strength is one of the basic mechanisms of memory formation and activity-dependent refinement of neural circuits. This idea was purposed by Hebb to provide a basis for the formation of a cell assembly. Repetitive correlated activity of pre-synaptic and post-synaptic neurons can induce long-lasting synaptic strength modification, the direction and extent of whi...
متن کاملSpike timing dependent plasticity: mechanisms, significance, and controversies
Long-term modification of synaptic strength is one of the basic mechanisms of memory formation and activity-dependent refinement of neural circuits. This idea was purposed by Hebb to provide a basis for the formation of a cell assembly. Repetitive correlated activity of pre-synaptic and post-synaptic neurons can induce long-lasting synaptic strength modification, the direction and extent of whi...
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We examine the conditions under which spike-timing-dependent plasticity (STDP) normalizes post-synaptic 0ring rates. Our simulations show that the rate normalization property of STDP is fragile and small changes in the LTD=LTP ratio or pre-synaptic input rates can lead to high 0ring rates. We propose an adaptive scheme to dynamically control the LTP=LTD ratio. The biophysics of synapses lead us...
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Spike Timing Dependent Plasticity (STDP) is a temporally asymmetric form of Hebbian learning induced by tight temporal correlations between the spikes of preand postsynaptic neurons. As with other forms of synaptic plasticity, it is widely believed that it underlies learning and information storage in the brain, as well as the development and refinement of neuronal circuits during brain develop...
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ژورنال
عنوان ژورنال: PLoS Computational Biology
سال: 2007
ISSN: 1553-7358
DOI: 10.1371/journal.pcbi.0030112