Multi-region calcium imaging in freely behaving mice with ultra-compact head-mounted fluorescence microscopes

© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd..

To investigate the circuit-level neural mechanisms of behavior, simultaneous imaging of neuronal activity in multiple cortical and subcortical regions is highly desired. Miniature head-mounted microscopes offer the capability of calcium imaging in freely behaving animals. However, implanting multiple microscopes on a mouse brain remains challenging due to space constraints and the cumbersome weight of the equipment. Here, we present TINIscope, a Tightly Integrated Neuronal Imaging microscope optimized for electronic and opto-mechanical design. With its compact and lightweight design of 0.43 g, TINIscope enables unprecedented simultaneous imaging of behavior-relevant activity in up to four brain regions in mice. Proof-of-concept experiments with TINIscope recorded over 1000 neurons in four hippocampal subregions and revealed concurrent activity patterns spanning across these regions. Moreover, we explored potential multi-modal experimental designs by integrating additional modules for optogenetics, electrical stimulation or local field potential recordings. Overall, TINIscope represents a timely and indispensable tool for studying the brain-wide interregional coordination that underlies unrestrained behaviors.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:11

Enthalten in:

National science review - 11(2024), 1 vom: 01. Jan., Seite nwad294

Sprache:

Englisch

Beteiligte Personen:

Xue, Feng [VerfasserIn]
Li, Fei [VerfasserIn]
Zhang, Ke-Ming [VerfasserIn]
Ding, Lufeng [VerfasserIn]
Wang, Yang [VerfasserIn]
Zhao, Xingtao [VerfasserIn]
Xu, Fang [VerfasserIn]
Zhang, Danke [VerfasserIn]
Sun, Mingzhai [VerfasserIn]
Lau, Pak-Ming [VerfasserIn]
Zhu, Qingyuan [VerfasserIn]
Zhou, Pengcheng [VerfasserIn]
Bi, Guo-Qiang [VerfasserIn]

Links:

Volltext

Themen:

Calcium imaging
Hippocampus
Journal Article
Miniature microscope
Multimodal integration
Multiple sites

Anmerkungen:

Date Revised 26.04.2024

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1093/nsr/nwad294

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM367787091