E physical world. For the duration of this familiarization phase, participants had been asked to
E physical globe. Throughout this familiarization phase, participants had been asked to describe their perception on the virtual atmosphere and their interaction using the humans avatars and objects. Participants reported they had the feeling of getting like “inside a movie”, “in a realistic world”, and “with realistic persons”. No one claimed complications with the IVR devices or with virtual room and stimuli. Right after the familiarization session, participants have been led by the experimenter on a premarked beginning position and had to hold a joystick in their dominant right hand. Throughout the experimental session, the participants stood with their arms extended along their body, similarly for the posture assumed by virtual humans (see Figure ).The experimental session was divided in four blocks corresponding towards the experimental situations: (i) passivecomfort distance, (ii) activecomfort distance; (iii) passivereachability, (iv) activereachability. For each block, participant received a training session in which an instance in the whole process was shown. Each and every 
block began having a short presentation in the instructions (2 s) followed by a fixation cross (300 ms). Afterwards, the testing phase started. In half on the trials participants supplied comfortdistance judgments (instruction: “press the button as quickly because the distance between yourself and the virtual stimulus tends to make your self really feel uncomfortable”), inside the other half they supplied reachabilitydistance judgments (instruction: “press the button as quickly as you could reach together with your hand the virtual stimulus”). This process was repeated in passive and active method conditions. Inside the “passive approach”, participants stood still and saw virtual stimulus walking towards them at a constant speed (0.five m.s2) until they stopped them by pressing the button. Within the “active approach”, the virtual stimuli remained motionless and participants walked towards them (0.5 m.s2) until they stopped and in the identical time pressed the button. In each circumstances the path involving participants and stimuli was three m long. Walking movements of human avatars reproduced the organic swing of biological motion. Following pressing the button, the virtual stimulus disappeared and participants had to return to their starting position. After there, the experimenter pressed a key that prompted the subsequent trial. Participants walked forwards and backwards by following the white dashedline around the virtual ground. The experimenter supervised and helped participants when important. A 5 min break was introduced just about every two blocks with the HMD taken off. Each and every virtual stimulus was presented four times within each and every block for a total of 64 trials. Order of blocks was counterbalanced across participants based on a Latin square style. Within every single block, order of trials presentation was quasirandomized. Every single block lasted about six min. In the ending of each block there was a manipulation check: participants had to report which activity they have been instructed to carry out. Within the CCT251545 postexperimental final interview, participants had been asked if they have been conscious of the goal from the experiment and no one claimed so. Furthermore, to explore participants’ feelings when immersed inside the virtual planet with virtual stimuli, participants were asked to indicate which strategy situation and which virtual stimulus they found pleasant or not. Participants reported they preferred PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/24126911 the active rather than the passive situation. The majority of female participants reportedFigur.