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Topic: Poisson Noise

ePoster
2 ePosters

In Computational Neuroscience and Neuroscience

ePoster · Computational Neuroscience

Inter-animal transforms as a guide to model-brain comparison

Javier Sagastuy Brena, Aran Nayebi, Daniel Yamins, Imran Thobani, Rosa Cao · COSYNE 2023

Sun, Mar 12, 2023

To address the question of how to compare DNN model activations to brain data, we investigate what transforms best describe similarity in neural activity in the same brain area between conspecifics. We expect neural responses to be functionally highly similar within a species (since we expect findings to generalize across animals). What kind of transform will make such similarity most evident? That is, under what kind of transform are conspecifics’ neural responses highly similar to each other? Researchers often default to linear regression as a reasonable transform class for measuring neural

ePoster · Neuroscience

Chronic optogenetic stimulation has the potential to shape the collective activity of neuronal cell cultures

Cyprian Adler, Friedrich Schwarz, Julian Vogel, Christine Stadelmann, Fred Wolf, Manuel Schottdorf, Andreas Neef · Bernstein Conference 2024

Neuronal cultures and human stem-cell-derived organoids are fundamental building blocks of neuroscientific research and future personalized medicine. However, in-vitro networks show considerably more synchronous bursting activity than networks in-vivo [1]. One leading theory proposes that under a lack of external input, maladapted network’s plasticity leads to a pathological collective activity pattern: long periods of quiescence are interspersed with bursts of strong, synchronous activity [2, 3]. In theoretical simulations, weak external input can reduce this bursting behavior. However, expe