“…Several behavioral studies also reported similarities between reaching and comfort spaces that may reflect, albeit to different degrees, common sensorimotor mechanisms when combined with the processing of the social-emotional valence of stimuli (e.g., [ 5 , 31 ]). Studies in virtual (e.g., [ 5 , 31 , 32 ]) and real-world [ 33 ] contexts compared the sizes of reaching (i.e., distance at which people perceive a stimulus as reachable) and comfort (i.e., distance people prefer from other persons) distances in different approach conditions (see [ 1 , 2 , 6 , 7 , 34 , 35 , 36 , 37 ]). Overall, the size of both spaces was similarly modulated by the socio-emotional context: reduced in the interaction with humans compared to with objects [ 5 , 31 , 33 , 38 ].…”