Table 4.

Virtual Reality (VR) Studies

Study	Participants		Control	VR Training	Number of Sessions	Tests	Assessment	Results	Design	Classification
Kim et al,139	24 RH (12 VR-Group and 12 Control Group)	Standard therapy		Bird and Ball (touch a flying ball); Coconuts (catch falling coconuts); Container (move a box from one side to another)	15 sessions of 30 mins	Star Cancellation task; LBT; CBS; K-MBI	Pre, Post	Improvement in CBS and in star cancellation task after VR training	RCT	Class I
Mainetti et al,140	1 RH	None		Duckneglect (reach targets with an increasing level of difficulties)	20 sessions of 30 mins	Albert Test; Letter Cancellation Test; LBT; MMSE; Attentional Matrices and the Token Test	Pre, Post, Follow-up (5 months later)	Improvement in MMSE, Attentional matrices, Albert test and LBT, at least for 5 months	Single-case	Class III
Fordell et al,142	15 RH	None		VST and multi-sensory stimulation	15 of 1 hr	VR-Star cancellation; VR-Baking tray task; VR-LBT; VR-Extinction; VR-Posner Task; CBS	Pre, Post, Follow-up (6 months)	Improvement in Star cancellation, Baking tray, Extinction and Posner Task; Improvement in CBS at least for 6 months	Pilot	Class III
Ekman et al,143	12 RH	None		VST and multi-sensory stimulation	15 of 1 hr	VR-Posner Task; fMRI	Pre (1 week), Post (1 weed)	Improvement in Posner performance. Increasement after VR-training in frontal and temporal activity during attentional cueing	Pilot	Class III
Wåhlin et al,144	13 RH	None		VST and multi-sensory stimulation	15 of 1 hr	VR-Posner task; rs-fMRI	Pre (1 week), Post (1 week)	Increasement of DAN connectivity	Pilot	Class III

Abbreviations: RH, Right Hemisphere; VST, Visual Scanning Training; LBT, Line Bisection Task; K-MBT, Korean version of Modified Barthel Index; MMSE, Mini Mental State Examination; CBS, Catherine Bergego Scale; DAN, Dorsal Attention Network; RCT, Randomized Control Trial.