Visuomotor adaptation to excessive visual displacement in video see-through HMDs

Lee, Joong Ho; Park, Ji‐Hyung

doi:10.1007/s10055-019-00390-0

Cited by 9 publications

(4 citation statements)

References 32 publications

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“…A previous study reported a similar result (Schorer et al 2012). Although visual displacement problems are caused by the distance between a front-mounted camera and the human eye inducing visuomotor performance deterioration (Lee and Park 2020), our apparatus is designed to suppress this problem by matching the positions of the camera and the eyes. Therefore, this nding could be explained by two factors.…”

Section: Discussionsupporting

confidence: 61%

“…In contrast, the 3PP group showed almost the same performance before and after the HMD intervention. This effect was not caused by simple visual displacement, because it was reported that a large amount of visual displacement induced a greater decrease in adaptation magnitude but showed a larger after effect (Lee and Park 2020). Thus, while the 1PP HMD practice task affected real-world performance, the 3PP task did not.…”

Section: Discussionmentioning

confidence: 77%

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Effects of first- and third-person perspectives created using a head-mounted display on dart-throwing accuracy

Ueyama

Harada

2021

Virtual Reality

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The rst-person perspective (1PP) and third-person perspective (3PP) have both been adopted in video games. The 1PP can induce a strong sense of immersion, and the 3PP allows players to perceive distances easily. Virtual reality (VR) technologies have also adopted both perspectives to facilitate skill acquisition. However, how 1PP and 3PP views affect motor skills in the real world, as opposed to in games and virtual environments, remains unclear. This study examined the effects of the 1PP and 3PP on real-world dart-throwing accuracy after head-mounted display (HMD)-based practice tasks involving either the 1PP or 3PP. The 1PP group showed poorer dart-throwing performance, whereas the 3PP task had no effect on performance. Furthermore, while the effect of the 1PP task persisted for some time, that of task 3PP disappeared immediately. Therefore, the effects of 1PP VR practice tasks on motor control transfer more readily to the real world than do those of 3PP tasks.

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Section: Discussionsupporting

confidence: 61%

Section: Discussionmentioning

confidence: 77%

Effects of first- and third-person perspectives created using a head-mounted display on dart-throwing accuracy

Ueyama

Harada

2021

Virtual Reality

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“…Their studies showed significant reduction in accuracy in visuo-motor tasks when the head-mounted camera and display were in use necessitating adaptation. Further reports from [13] and [14] on the effect of camera height and depth displacements on eye-hand coordination and eye-foot coordination tasks with stereoscopic seethrough head-mounted displays have shown that larger camera displacements produced larger errors and require longer adaptation times. In sighted humans, three parameters are known to contribute to encoding the position of a target into the egocentric frame of reference: (i) retinally coded position of the target (or retinotopic position of the object), (ii) gaze position and, (iii) position of the head with reference to body axis [15].…”

Section: Background and Related Work 21 External Image Capture And Eg...mentioning

confidence: 99%

Effect of camera position on egocentric localisation with Simulated Prosthetic Vision

et al. 2021

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Objective: The positioning of the external camera in current designs of retinal prostheses may affect the egocentric spatial frame of reference and lead to pointing and localisation errors. The present simulated prosthetic vision (SPV) study investigated the immediate effects of four camera positions: (i) centre-mounted (CM), (ii) head-mounted (HM), (iii) left-mounted (LM), (iv) right-mounted (RM) on egocentric localisation. Approach: Fifteen sighted participants performed a pointing task while viewing the stimulus through a simulation of Bionic Vision Technologies’ 44-channel retinal prosthesis. Pointing responses were recorded immediately after exposure to different camera positions and prior to adaptation. The direction and magnitude of pointing errors and associated head movement behaviour were analysed using linear mixed effects analysis. Main results: Our results showed lower errors for medial camera positions (CM and HM) and overall improved accuracy and precision for CM position. Head orientation was found to largely influence the direction of pointing. There was a high positive correlation between direction of head orientation and direction of pointing with CM and HM camera positions, suggesting medial camera positions facilitated intuitive head orientation cues that are important for reliable egocentric direction estimation. Significance: The empirical evidence derived from the present SPV study offers practical guidance to reduce the effect on spatial dissociation of camera position in localisation tasks and inform design of future prosthetic vision devices and improve rehabilitation approaches.

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“…Although there are several findings showing that sensorimotor adaptation occurs using video see-through HMDs or virtual environments (Biocca and Rolland 1998;Bruggeman et al 2007;Groen and Werkhoven 1998;Hartman 2018;Lee and Park 2020;Littman 2009Littman , 2011Maksimovic et al 2020), it is not yet clear whether the same processes as in prism glasses are involved. The question of whether prism adaptation can be fully transferred to VR is important for several reasons: First, VR as a research tool can be used to investigate further sensorimotor adaptation, because it offers the possibility for complex, but simultaneously controlled environments (Bohil et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Sensorimotor adaptation in VR: magnitude and persistence of the aftereffect increase with the number of interactions

Wähnert

Gerhards

2022

Virtual Reality

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In both prism and virtual reality experiments, it has been observed that visual displacement leads to an adaptation of the sensorimotor system. A characteristic of adaptation is the occurrence of the aftereffect, which is the spatial deviation of the movements in the direction opposite to the visual displacement. Prism adaptation experiments have shown that a higher number of interactions lead to an increased magnitude and persistence of the aftereffect. The aim of the present study was to investigate this relationship in virtual reality. After baseline measurement, the virtual environment was displaced visually. During this adaptation phase, the participants performed either zero, five, or thirty-five pointing movements. Afterwards, all participants performed the pointing movements without the visual displacement in the virtual environment. Performing five pointing movements during the adaptation phase was already sufficient to produce an aftereffect. With thirty-five pointing movements, both magnitude and persistence of the aftereffect increased. These results replicate studies of prism adaptation. Considering this, we briefly discuss the suitability of virtual reality as a research tool to study prism adaptation.

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Visuomotor adaptation to excessive visual displacement in video see-through HMDs

Cited by 9 publications

References 32 publications

Effects of first- and third-person perspectives created using a head-mounted display on dart-throwing accuracy

Effects of first- and third-person perspectives created using a head-mounted display on dart-throwing accuracy

Effect of camera position on egocentric localisation with Simulated Prosthetic Vision

Sensorimotor adaptation in VR: magnitude and persistence of the aftereffect increase with the number of interactions

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