清華大学のチームが世界最軽量のメソスコープを開発(Tsinghua team develops world’s lightest mesoscope)

ad

2026-10-26 清華大学

清華大学などの研究チームは、マウスが自由に動き回る状態で、大脳皮質の広範囲にわたる神経活動を高解像度で観察できる、重量わずか1g(電池を除く)のワイヤレス顕微鏡「Airscope」を開発した。視野6mm、単一細胞レベルの解像度を実現し、1匹のマウスで最大8,500個以上のニューロンの活動を同時記録できる。2メガピクセルの撮像素子、AIを用いたレンズ設計、センサー内での約25倍のデータ圧縮などを組み合わせ、小型・軽量化と高精細な無線伝送を両立した。さらに、複数のマウスを同時に追跡するAI解析技術も開発し、社会的相互作用や自然行動に伴う脳活動の解析に応用した。神経科学や脳疾患研究、光学式ブレイン・コンピューター・インターフェースの進展に貢献する観察技術である。

<関連情報>

1グラムのワイヤレスメソスコープを用いた、自然な行動をとるマウスの大脳皮質全体のイメージング Cortex-wide imaging in naturally behaving mice with 1-gram wireless mesoscopes

Yuanlong Zhang, Angran Li, Lekang Yuan, Mingrui Wang, Weihao Zhao, Zhenbo Wang, Boyang Zang, Yangxuan Zhou, Tao Yu, Lin Gao, Yu Wu, Rongkang Zhu, Mengyi Tian, Kun Li, Jiamin Wu, Pu Dai & Qionghai Dai
Nature  Published:19 October 2026
DOI:https://doi.org/10.1038/s41586-026-11293-x  Early provide

Abstract

Revealing how distributed cortical circuits coordinate behavior in freely moving animals remains a central challenge in systems neuroscience, constrained by limited fields of view, low throughput, and the tethering required by current miniaturized microscopes1-4. Here, we present Airscope, a wireless mesoscope delivering 4 μm lateral resolution across a 6 mm field of view at 12.5 Hz, weighing 1.0 gram. An aspheric-lens design achieves a 2.84× shorter total track length than previous miniaturized microscopes1,2,5,6 while matching the neuron yield of benchtop one-photon mesoscopes; a tailored wireless link supports cable-free calcium imaging from >8,500 neurons per animal (25‑fold increase). Paired with a zero-shot behavior analyzer, Airscope enables cortical imaging across rich behavioral conditions, including room-scale enriched arenas, swimming assays, and multi-organ implantation, with concurrent recording from multiple animals. Using Airscope, we demonstrate versatile applications of untethered cortical imaging across diverse behavioral paradigms. We identify cortical activity patterns across multiple dorsal regions that correlate with behavioral signatures of social dominance, and show dorsal-cortical population activity prospectively decodes competition outcomes across paired animals. We observe reward-location-associated cortical activity patterns during maze exploration, and characterize Granger-causal influence from spinal cord to cortex during fear conditioning, enabled by simultaneous brain-spinal recordings. By uniting large-scale, cellular-resolution recording with unconstrained behavior, Airscope makes naturalistic, multi-animal cortical recording experimentally practical, and provides a broadly accessible technology for systems neuroscience.

生物工学一般
ad
ad
ad
タイトルとURLをコピーしました