| Along with the hot concept of metaverse,virtual reality technology has gradually entered various fields with its high interactivity and high visualization,and the level of integration between the device and the user’s body is getting higher and higher.In the interaction mode,we are not satisfied with the original single visual signal input,but focus on the virtual reality application technology of combined visual-auditory-touch multi-sensory channel.In this paper,a key issue in haptic interaction,"the influence of haptic channels on user spatial perception",is investigated,and a reasonable hypothesis is made to verify whether haptics can influence spatial perception and to find potential ways to enhance spatial perception through haptics.Most of the existing studies on spatial perception in the field of virtual reality and human-computer interaction have been conducted in the context of the visual channel to investigate how user perception(incarnation,body ownership,etc.)is affected by the interaction mode in a virtual context.Few studies have addressed the haptic domain and the exploration of body ownership within near-handed environments.Instead,influencing haptic perception can be done using hand repositioning algorithms,a technical way of using visual dominance over proprioceptive position sense to map the virtual hand position to a location that matches internal perception.However,as the offset of the virtual hand gradually increases,internal position perception is difficult to self-attribute to the motion of the virtual hand,and the user becomes aware of the remapping process taking place.We therefore hypothesize that haptics can affect spatial perception by influencing internal control loci in a way that confounds the remapping process.In this paper,we present two experiments,Experiment 1 on the effect of forcetactile feedback on virtual reality interaction.The purpose of the experiment is to separate the mixed effects of force and haptics.The relationship between force haptics as a perceptual channel and cognitive load is systematically illustrated in terms of the relationship between force haptics and cognitive load,and the experimental results demonstrate that force haptics,although enhancing learner interest,does not improve cognitive outcomes.The second experiment deals with the effects of tactile and visual conditions on perception,respectively.By evaluating users’ performance in different perceptual environments to verify that haptics produces illusions by blurring the original threshold of vision,it is investigated whether haptics can affect people’s ability to perceive space to a certain extent.A haptic reorientation algorithm is proposed to verify the effect of haptics on internal position control.The results show that haptics can indeed reduce people’s perceptual thresholds for spatial distance and depth by altering internal perception in a way that increases illusions,and that a haptic-visual coherent environment can make the remapping of mismatches between virtual and physical locations insignificant. |
