Table 1.

Definitions of the key terms and key concepts relating to immersive virtual nature.

Term	Definition	Source
Nature	Refers to “areas containing elements of living systems that include plants and non-human animals across a range of scales and degrees of human management—from a small urban park to “pristine wilderness.”	[19] (pp. 121–122)
Green exercise	“Physical activities whilst at the same time being directly exposed to nature.”	[20] (p. 7)
Nature-Based Interventions	“NBIs are programmes, activities or strategies that aim to engage people in nature–based experiences with the specific goal of achieving improved health and wellbeing.”	[21] (p. 2)
Virtual Reality (VR)	“A medium composed of interactive computer simulation that senses the participant’s position and actions and replaces or augments the feedback to one or more senses, giving the feeling of being mentally immersed or present in the simulation (a virtual world).”	[22] (p. 13)
Augmented Reality (AR)	AR “supplements the real world with virtual (computer-generated) objects that appear to coexist in the same space as the real world.”	[23] (p. 34)
Immersion	“The extent to which the computer displays are capable of delivering an inclusive, extensive, surrounding and vivid illusion of reality to the senses of a human participant”	[24] (p. 3)
Presence	‘‘The (psychological) sense of being in the virtual environment.”	[24] (p. 3)
Technological Nature	“Technologies that in various ways mediate, augment or simulate the natural world.”	[14] (p. 37)
Immersive Virtual Nature (IVN)	Based on so-called immersive virtual environments technology, provides the illusory perception of being enclosed within a natural environment.	[17] (p. 280)