Sciweavers

BC
2002
90views more  BC 2002»
13 years 4 months ago
Converging evidence for a simplified biophysical model of synaptic plasticity
Different mechanisms that could form the molecular basis for bi-directional synaptic plasticity have been identified experimentally and corresponding biophysical models can be cons...
Harel Z. Shouval, Gastone C. Castellani, Brian S. ...
BC
2002
88views more  BC 2002»
13 years 4 months ago
Beyond spike timing: the role of nonlinear plasticity and unreliable synapses
Spike-timing-dependent plasticity (STDP) strengthens synapses that are activated immediately before a postsynaptic spike, and weakens those that are activated after a spike. To pre...
Walter Senn
BC
2002
87views more  BC 2002»
13 years 4 months ago
Perception-action coupling model for human locomotor pointing
Abstract. How do humans achieve the precise positioning of the feet during walking, for example, to reach the first step of a stairway? We addressed this question at the visuomotor...
A. de Rugy, G. Taga, G. Montagne, M. J. Buekers, M...
BC
2002
61views more  BC 2002»
13 years 4 months ago
Spike timing dependent synaptic plasticity in biological systems
Association of a presynaptic spike with a postsynaptic spike can lead to changes in synaptic efficacy that are highly dependent on the relative timing of the preand postsynaptic sp...
Patrick D. Roberts, Curtis C. Bell
BC
2002
90views more  BC 2002»
13 years 4 months ago
What can the hippocampal representation of environmental geometry tell us about Hebbian learning?
The importance of the hippocampus in spatial representation is well established. It is suggested that the rodent hippocampal network should provide an optimal substrate for the stu...
Colin Lever, Neil Burgess, Francesca Cacucci, Tom ...
BC
2002
71views more  BC 2002»
13 years 4 months ago
Mapping time
Christian Leibold, J. Leo van Hemmen
BC
2002
133views more  BC 2002»
13 years 4 months ago
Cortical network reorganization guided by sensory input features
Abstract. Sensory experience alters the functional organization of cortical networks. Previous studies using behavioral training motivated by aversive or rewarding stimuli have dem...
Michael P. Kilgard, Pritesh K. Pandya, Navzer D. E...
BC
2002
108views more  BC 2002»
13 years 4 months ago
Spike-timing-dependent plasticity: common themes and divergent vistas
Abstract. Recent experimental observations of spiketiming-dependent synaptic plasticity (STDP) have revitalized the study of synaptic learning rules. The most surprising aspect of ...
Ádám Kepecs, Mark C. W. van Rossum, ...
BC
2002
70views more  BC 2002»
13 years 4 months ago
Mechanisms and significance of spike-timing dependent plasticity
Hebb's original postulate left two important issues unaddressed: (i) what is the effective time window between pre- and postsynaptic activity that will result in potentiation?...
Uma R. Karmarkar, Mark T. Najarian, Dean V. Buonom...
BC
2002
91views more  BC 2002»
13 years 4 months ago
Mathematical formulations of Hebbian learning
Several formulations of correlation-based Hebbian learning are reviewed. On the presynaptic side, activity is described either by a firing rate or by presynaptic spike arrival. The...
Wulfram Gerstner, Werner M. Kistler