Neuro-Inspired Visual Pattern Recognition via Biological Reservoir Computing

2026-02-05

AI Summary

This work proposes a biological reservoir computing system based on in vitro cultured cortical neurons, directly harnessing living neural networks as physical reservoirs for static visual pattern recognition—a task traditionally challenging for conventional artificial recurrent networks due to their reliance on approximations of neural dynamics. Visual stimuli are delivered via a high-density microelectrode array (HD-MEA), which simultaneously records the evoked neural responses; these responses are then decoded by a linear classifier to achieve end-to-end recognition. The system demonstrates high accuracy across diverse tasks, including point stimuli, oriented gratings, clock-like digits, and MNIST handwritten digits. These results validate that biological neural circuits can serve as efficient and authentic computational substrates, offering a novel paradigm for neuromorphic computing.

Technology Category

• Cognitive Modeling & Cognitive Systems: Neural Spike Coding
• Machine Learning: Bio-inspired Learning
• Computer Vision: Medical and Biological Imaging

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Experiences and lessons learnt from Web-based algorithms and system deployments
• Economics, Online Markets and Human Computation: Cost models of using LLMs in production systems
• Search and Retrieval-Augmented AI: Web evaluation methodologies and metrics

Abstract

In this paper, we present a neuro-inspired approach to reservoir computing (RC) in which a network of in vitro cultured cortical neurons serves as the physical reservoir. Rather than relying on artificial recurrent models to approximate neural dynamics, our biological reservoir computing (BRC) system leverages the spontaneous and stimulus-evoked activity of living neural circuits as its computational substrate. A high-density multi-electrode array (HD-MEA) provides simultaneous stimulation and readout across hundreds of channels: input patterns are delivered through selected electrodes, while the remaining ones capture the resulting high-dimensional neural responses, yielding a biologically grounded feature representation. A linear readout layer (single-layer perceptron) is then trained to classify these reservoir states, enabling the living neural network to perform static visual pattern-recognition tasks within a computer-vision framework. We evaluate the system across a sequence of tasks of increasing difficulty, ranging from pointwise stimuli to oriented bars, clock-digit-like shapes, and handwritten digits from the MNIST dataset. Despite the inherent variability of biological neural responses-arising from noise, spontaneous activity, and inter-session differences-the system consistently generates high-dimensional representations that support accurate classification. These results demonstrate that in vitro cortical networks can function as effective reservoirs for static visual pattern recognition, opening new avenues for integrating living neural substrates into neuromorphic computing frameworks. More broadly, this work contributes to the effort to incorporate biological principles into machine learning and supports the goals of neuro-inspired vision by illustrating how living neural systems can inform the design of efficient and biologically grounded computational models.

Problem

• biological reservoir computing
• visual pattern recognition
• in vitro neural networks
• neuromorphic computing
• neuro-inspired computing

Innovation

• biological reservoir computing
• in vitro neural networks
• high-density multi-electrode array
• neuro-inspired vision
• spiking neural dynamics