Table 2.

Summary of all publications utilizing calcium imaging for interrogation of spinal cord somatosensory circuitry.

		Imaging method
		Epifluorescence	1-photon	2-photon
Method of delivery of the calcium-sensitive indicator	Transgenic	Bellardita et al. (2017)	Sun et al. (2017)	Tang et al. (2015)* Zhang et al. (2018a)* Olivares-Moreno et al. (2019)
	Viral Vector	Simonetti et al. (2013) Aresh et al. (2017) Freitag et al. (2019)	Nishida et al., 2014* Sekiguchi et al., 2016*	Yoshihara et al. (2018)* Sekiguchi et al. (2016)* Chen et al. (2018)*
	Bulk Loading	Kyrozis et al. (1995) Kawamata and Omote (1996) Coull et al. (2003) Tsuzuki et al. (2004) Cordero-Erausquin et al. (2005) Coull et al. (2005) Ruscheweyh and Sandkuhler (2005) Shutov et al. (2006) Luo et al. (2008) Schoffnegger et al. (2008) Miyano et al. (2010) Flynn et al. (2011) Doolen et al. (2012) Corder et al. (2013) Petitjean et al. (2014) Baba et al. (2016) Gao et al. (2016) Doolen et al. (2017) Potter et al. (2018) Skorput et al. (2018) Taylor et al. (2019)	Gustafson-Vickers et al. (2008) Merighi et al. (2008) Bardoni et al. (2010) Lu et al. (2018)	Wilson et al. (2007) Johannssen and Helmchen (2010)* Laffray et al. (2011) Cirillo et al. (2012)* Cirillo et al. (2015)* Ran et al. (2016)* Skorput et al. (2018)
	Single Cell Pipette Loading	Isaev et al. (2000) Ikeda et al. (2003) Heinke et al. (2004) Kopach et al. (2011) Yan et al. (2014) Kim et al. (2015) Yan et al. (2019)	Drdla et al. (2009)*	Ikeda et al. (2006)* Drdla et al. (2009)

This table amalgamates all examples of calcium imaging in the spinal dorsal horn, with references grouped by imaging technique and by the method of delivery of the calcium-sensitive indicator. *Beside a citation indicates that some or all of the experiments were performed in vivo.