Study design
head posture, HMD
The entire experiment was conducted inside VR environment. Participants wore a HMD (resolution: 1080 × 1200 px, Field Of View (FOV): 110°, Refresh rate: 90 Hz) that produced an immersive VR experience: participants always saw a reproduction of the room in which they were located. Importantly, the VR also allowed continuous tracking of their head posture and movements. All sounds were delivered from a real speaker, tracked in 3D space and moved by the experimenter’s hand to pre-determined positions within the VR environment (identical to the methods adopted in [Participants performed each of the two VR training (Spatial and Non-Spatial) in a within-subject crossover design, in two separate experimental sessions (washout interval was at least 15 days, training order was counterbalanced across participants; see Fig. Experimental procedure and setting. 