Receptive fields of V2 VPM neurons one to three months after operations
| Operation | RF location | Corresponding brain stem nuclei | Number of recordings | Proportion to total mapped sites (%) |
|---|---|---|---|---|
| Sham | Whisker(s) or whisker pad | PrV2, V2 SpI | 20 | 95.2 |
| Nonresponsive | None | 1 | 4.8 | |
| IONC | Whisker(s) or whisker pad | PrV2, V2 SpI | 7 | 13.5 |
| Lower jaw | PrV3, V3 SpI | 8 | 15.4 | |
| Nonresponsive | None | 38 | 73.1 |
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, 21 recording sites were mapped from three mice (three penetrations) in total. For the IONC group, 52 recording sites were mapped from three mice (five penetrations) in total. Note that in several cases each recording site had multiple RFs such as the lower jaw and the whisker pad. 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.