Fig. 2From: Factors associated with dynamic balance in people with Persistent Postural Perceptual Dizziness (PPPD): a cross-sectional study using a virtual-reality Four Square Step TestFSST-VR visual conditions: a Left: An individual wearing the head mounted display while performing the FSST-VR. Right: the respective virtual environment viewed via the HMD. b Varying visual loads, from simple (left): empty subway platform, to complex (center): people moving in the AP direction; to Complex + (right): additional trains moving around the platformBack to article page