83 citations · 84 across the 5 of their papers we have counts for
6 papers
Diffusion of Neuromodulators for Temporal Credit Assignment
João Barretto-Bittar, Anna Levina, Emmanouil Giannakakis +1
Biological learning achieves temporal credit assignment despite sparse and imprecise feedback, often relying on neuromodulatory signals acting over space and time. Here, we introdu…
Neural timescales from a computational perspective
Roxana Zeraati, Anna Levina, Jakob H. Macke +1
Neural activity fluctuates over a wide range of timescales within and across brain areas. Experimental observations suggest that diverse neural timescales reflect information in dy…
Emergent mechanisms for long timescales depend on training curriculum and affect performance in memory tasks
Sina Khajehabdollahi, Roxana Zeraati, Emmanouil Giannakakis +3
Recurrent neural networks (RNNs) in the brain and in silico excel at solving tasks with intricate temporal dependencies. Long timescales required for solving such tasks can arise f…
Topology-dependent coalescence controls scaling exponents in finite networks
Roxana Zeraati, Victor Buendía, Tatiana A. Engel +1
Multiple studies of neural avalanches across different data modalities led to the prominent hypothesis that the brain operates near a critical point. The observed exponents often i…
Spatial and temporal correlations in neural networks with structured connectivity
Yan-Liang Shi, Roxana Zeraati, Anna Levina +1
Correlated fluctuations in the activity of neural populations reflect the network's dynamics and connectivity. The temporal and spatial dimensions of neural correlations are interd…
Self-organization toward criticality by synaptic plasticity
Roxana Zeraati, Viola Priesemann, Anna Levina
Self-organized criticality has been proposed to be a universal mechanism for the emergence of scale-free dynamics in many complex systems, and possibly in the brain. While such sca…