|Operation||RF location||Corresponding brain stem nuclei||Number of recordings||Proportion to total mapped sites (%)|
|Sham||Whisker(s) or whisker pad||PrV2, V2 SpI||39||92.9|
|IONC||Whisker(s) or whisker pad||PrV2, V2 SpI||3||4.6|
|Lower jaw||PrV3, V3 SpI||9||13.8|
Recordings were made from the right V2 VPM. All receptive fields (RFs) were found in the contralateral (left) side of the face and/or body. For the sham group, 42 recording sites were mapped from six mice (six penetrations) in total. For the IONC group, 65 recording sites were mapped from five mice (seven penetrations) in total. Note that in several cases each recording site had multiple RFs such as the lower jaw and the chest. PrV2, maxillary region of the principle trigeminal nucleus; PrV3, mandibular region of the principle trigeminal nucleus; V2 SpI, maxillary region of the interpolar subnucleus of the spinal trigeminal nuclei; V3 SpI, mandibular region of the interpolar subnucleus of the spinal trigeminal nuclei.