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Mean firing rate

3 ePosters

Newest first

…The average λ, or mean firing rate (MFR), of a hidden layer, shows stable differences between memorizing and generalizing networks, comparatively independent of the underlying data used for evaluation. We first show the performance of this indicator during training on benchmark computer vision datasets such as MNIST and CIFAR-10. In a second step, we extend the work to the real-life use case of calibrating a pre-trained model to

Deep Learning

The quality and complexity of pairwise maximum entropy models for large cortical populations

Valdemar Kargård Olsen, Jonathan Whitlock, Yasser Roudi · FENS Forum 2024

We investigate the ability of the pairwise maximum entropy model to describe the spiking activity of large populations of neurons recorded from the visual, auditory, motor, and somatosensory cortices. To quantify this performance, we use (1) Kullback-Leibler (KL) divergences, (2) the extent to which the pairwise model predicts third-order correlations, and (3) its ability to predict the probability of multiple simultaneously active neurons. We compare these with the performance of a model with independent neurons and study the relationship between the different performance measures, while vary

Neuroscience

Diverse covariates modulate neural variability: a widespread (sub)cortical phenomenon

David Liu, Theoklitos Amvrosiadis, Nathalie Rochefort, Máté Lengyel · COSYNE 2022

…Recent work demonstrated that this variability can be modulated by specific stimulus features, most prominently quenched by stimulus onset. However, it is unknown how ubiquitous this effect is across stimulus features, and indeed whether it exists in brain areas to which classical neural coding approaches cannot be applied due to the lack of trials with repeatable experimental stimuli. To address these questions, we develop a

Computational Neuroscience