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Related Experiment Video

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Author Spotlight: Deciphering Neural Circuit Formation from Two-Photon Microscopy and Single Neuron Imaging

Author Spotlight: Deciphering Neural Circuit Formation from Two-Photon Microscopy and Single Neuron Imaging

Published on: November 21, 2023

Sensory cortex is optimized for prediction of future input.

Yosef Singer¹, Yayoi Teramoto¹, Ben Db Willmore¹

¹Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.

|June 19, 2018

Summary

This summary is machine-generated.

Sensory cortex neurons are tuned to predict future inputs from recent sensory data. This predictive coding principle shapes neuronal selectivity, mirroring receptive fields found in mammalian brains.

Keywords:

auditory cortex ferret model neuroscience normative prediction

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Area of Science:

Neuroscience
Computational Neuroscience
Machine Learning

Background:

Neurons in the sensory cortex exhibit selectivity for diverse features in natural scenes.
The underlying principles determining this neuronal selectivity remain incompletely understood.

Purpose of the Study:

To investigate whether neuronal selectivity is optimized for representing features that predict immediate future sensory inputs.
To test the hypothesis that predictive coding shapes receptive field properties in the sensory cortex.

Main Methods:

Utilized simple feedforward neural networks trained on natural scene video and audio clips.
Trained networks to predict subsequent moments in sensory data streams.
Compared network-generated receptive fields with those of real cortical neurons across mammalian species.

Main Results:

Developed receptive fields in neural networks closely matched real cortical neurons.
Observed oriented spatial tuning (visual cortex) and frequency selectivity (auditory cortex).
Found that superior prediction accuracy correlated with more brain-like receptive fields, particularly temporal tuning.

Conclusions:

Neuronal selectivity in the sensory cortex is shaped by the need to predict future sensory inputs.
The brain optimizes sensory processing to extract features with high predictive power.
Predictive coding offers a unifying framework for understanding sensory cortical organization.