Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12974-021-02341-6/MediaObjects/12974_2021_2341_Fig1_HTML.png)
Experimental procedure. AC, acclimatization; CUMS, chronic unpredictable mild stress; Hi, hippocampus; taVNS, transcutaneous auricular vagus nerve stimulation; − 21 days, 0 day, 21 days involved three behavioral testing of SPT, OFT and FST
Experimental procedure. AC, acclimatization; CUMS, chronic unpredictable mild stress; Hi, hippocampus; taVNS, transcutaneous auricular vagus nerve stimulation; − 21 days, 0 day, 21 days involved three behavioral testing of SPT, OFT and FST