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© Research
Publication : Nature methods

Real-time imaging of brain activity in freely moving rats using functional ultrasound.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature methods - 01 Sep 2015

Urban A, Dussaux C, Martel G, Brunner C, Mace E, Montaldo G,

Link to Pubmed [PMID] – 26192084

Link to DOI – 10.1038/nmeth.3482

Nat Methods 2015 Sep; 12(9): 873-8

Innovative imaging methods help to investigate the complex relationship between brain activity and behavior in freely moving animals. Functional ultrasound (fUS) is an imaging modality suitable for recording cerebral blood volume (CBV) dynamics in the whole brain but has so far been used only in head-fixed and anesthetized rodents. We designed a fUS device for tethered brain imaging in freely moving rats based on a miniaturized ultrasound probe and a custom-made ultrasound scanner. We monitored CBV changes in rats during various behavioral states such as quiet rest, after whisker or visual stimulations, and in a food-reinforced operant task. We show that fUS imaging in freely moving rats could efficiently decode brain activity in real time.