NLP4Neuro: Sequence-to-sequence learning for neural population decoding

• URL: http://arxiv.org/abs/2507.02264v1
• Date: Thu, 03 Jul 2025 03:14:55 GMT
• Title: NLP4Neuro: Sequence-to-sequence learning for neural population decoding
• Authors: Jacob J. Morra, Kaitlyn E. Fouke, Kexin Hang, Zichen He, Owen Traubert, Timothy W. Dunn, Eva A. Naumann,
• Abstract summary: Delineating how animal behavior arises from neural activity is a foundational goal of neuroscience.<n>Transformers, the backbone of modern large language models (LLMs), have become powerful tools for neural decoding from smaller neural populations.
• Score: 0.9086712846902969
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Delineating how animal behavior arises from neural activity is a foundational goal of neuroscience. However, as the computations underlying behavior unfold in networks of thousands of individual neurons across the entire brain, this presents challenges for investigating neural roles and computational mechanisms in large, densely wired mammalian brains during behavior. Transformers, the backbones of modern large language models (LLMs), have become powerful tools for neural decoding from smaller neural populations. These modern LLMs have benefited from extensive pre-training, and their sequence-to-sequence learning has been shown to generalize to novel tasks and data modalities, which may also confer advantages for neural decoding from larger, brain-wide activity recordings. Here, we present a systematic evaluation of off-the-shelf LLMs to decode behavior from brain-wide populations, termed NLP4Neuro, which we used to test LLMs on simultaneous calcium imaging and behavior recordings in larval zebrafish exposed to visual motion stimuli. Through NLP4Neuro, we found that LLMs become better at neural decoding when they use pre-trained weights learned from textual natural language data. Moreover, we found that a recent mixture-of-experts LLM, DeepSeek Coder-7b, significantly improved behavioral decoding accuracy, predicted tail movements over long timescales, and provided anatomically consistent highly interpretable readouts of neuron salience. NLP4Neuro demonstrates that LLMs are highly capable of informing brain-wide neural circuit dissection.

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