Perception de la verticale avec un cadre visuel solidaire de la tête : implications pour l'utilisation des visiocasques (notice n° 991067)
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| fixed length control field | 04942cam a2200397 4500500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250125131248.0 |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | fre |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 100 10 - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Mars, Franck |
| Relator term | author |
| 245 00 - TITLE STATEMENT | |
| Title | Perception de la verticale avec un cadre visuel solidaire de la tête : implications pour l'utilisation des visiocasques |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2005.<br/> |
| 500 ## - GENERAL NOTE | |
| General note | 85 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | RÉSUMÉ Les travaux présentés visent à déterminer comment la présence de références visuelles fixes dans le référentiel de la tête peut influencer la perception de l’orientation spatiale. Une première expérience étudie l’influence d’un cadre visuel céphalocentré sur la verticale subjective, lors d’inclinaison de la tête. Une seconde expérience s’intéresse aux effets d’un tel cadre visuel sur la verticale subjective et sur la performance dans une tâche de réorientation de la tête lors d’inclinaisons du corps entier. Les deux études mettent l’accent sur le rôle fondamental du référentiel céphalocentré dans le traitement des informations visuelles pour la perception de l’orientation spatiale. Elles suggèrent qu’un cadre visuel céphalocentré tel qu’on peut le trouver dans un visiocasque peut contribuer à désorienter l’utilisateur, en particulier dans les environnements de réalité augmentée. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | PERCEPTION OF THE VERTICAL WITH A HEAD-FIXED VISUAL FRAME : IMPLICATIONS FOR USING HEAD-MOUNTED DISPLAYS Head-mounted displays are now extensively developed and tested to be used in enhanced reality environments. The technique consists in transmitting synthetic visual information to the user’s eyes in such a way that virtual objects are superimposed on the real world. Some displays give the feeling of viewing a rectangular head-fixed virtual screen with clearly visible contours. In addition, head-mounted displays allow for the presentation of head-fixed visual information to the user and this may be an advantage in some applications, military aeronautics for instance. Presenting head-fixed visual information may not be trivial with regard to actual models of spatial orientation. This study addressed the question of potential disorienting effects associated with head-mounted displays by investigating the influence of a head-fixed visual frame on the perception of the vertical when the head or the whole body was tilted in the frontal plane. In a first experiment, subjects were instructed to indicate the vertical by rotating a visual rod that appeared at the centre of the frame whilst tilting the head in various positions. This performance was compared with the effect on the subjective vertical of a tilted earth-based visual frame without head tilts as well as with the effect of tilting the head without a frame. With the tilted frames, subjects set the rod in an intermediate direction between the gravitational vertical and the orientation of the frame. Errors were substantially larger with a head-fixed visual frame during head tilt than with a tilted earth-based frame. This difference cannot be attributed to the addition of a postural effect caused by the head being tilted. Moreover, continuous vision of the frame when its orientation changed improved performance only when the head and the frame were dissociated, i.e. with an earth-based frame. A second experiment investigated the effects of a head-fixed frame on the subjective vertical and on the voluntary control of head orientation when the whole body was tilted. The effect of a head-fixed frame was contrasted with the effect of a trunk-fixed frame. Results show that the head-fixed frame modified the head behaviour when subjects were instructed to align the head with the trunk. These errors contributed to an increase in the visual frame influence on the subjective vertical. Results of both experiments suggest that integrating visual information in the head-centric reference frame is crucial for spatial orientation. This property of the perceptual system may be relevant for the design and use of head-mounted displays. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Visiocasque |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Réalité augmentée |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Intégration sensorielle |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Réferentiels spatiaux |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Orientation spatiale |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Vision |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Verticale subjective |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Reference Frames |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Sensory Integration |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Spatial Orientation |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Subjective Vertical |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Head-Mounted Displays |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Enhanced Reality |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Vision |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Bringoux, Lionel |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Cian, Corinne |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Barraud, Pierre-Alain |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Raphel, Christian |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vercher, Jean-Louis |
| Relator term | author |
| 786 0# - DATA SOURCE ENTRY | |
| Note | Le travail humain | 68 | 2 | 2005-06-01 | p. 125-152 | 0041-1868 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://shs.cairn.info/revue-le-travail-humain-2005-2-page-125?lang=fr&redirect-ssocas=7080">https://shs.cairn.info/revue-le-travail-humain-2005-2-page-125?lang=fr&redirect-ssocas=7080</a> |
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