Advances in the Cognitive Management of Chronic Pain in Children through the Use of Virtual Reality Combined with Binaural Beats: A Pilot Study

Table 2

Variables considered in the study and measuring instruments.

Variable	Name	Implementation	Measure instrument	Type	Authors	Analysis
Pain perception	PAIN	Pretest	Pediatric pain questionnaire	Subjective/psychological	Riquelme et al. [29]	Qualitative
		Post-test phase 1
		Post-test phase 2
		Post-test phase 3
Heart rate	HR	Whole session	Empathic bracelet E4	Objective/Physiological	Wiederhold et al. [16]	Quantitative
Galvanic skin response	GSR	Whole session	Empathic bracelet E4	Objective/Physiological	Spyridonis et al. [30]	Quantitative