Table 2.

Type of brain activation targeted for neurofeedback categorized by study.

Extraction Method	Number of Studies	Study Reference
Region of Interest	14	Canterberry et al. (2013)
		Caria et al. (2010)
		Greer et al. (2014)
		Hamilton et al. (2011)
		Hanlon et al. (2013)
		Hartwell et al. (2016)
		Karch et al. (2015)
		Kirsch et al. (2016)
		Kirschner et al. (2018)
		Lawrence et al. (2014)
		Li et al. (2013)
		MacInnes et al. (2016)
		Sulzer et al. (2013b)
		Zotev et al., 2011
Functional Connectivity	1	Kim et al. (2015)
Effective Connectivity	2	Cohen Kadosh et al. (2016)
		Koush et al., 2017