LOCANDMOTION · Sensory integration for limb localization and action
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2013-09-01 → 2015-05-31
- Финансиране от ЕС
- 43 750 €
- Участници
- 1
- Схема
- MC-CIG
Линиите свързват координатора с партньорите.
Накратко на български
Връзката между зрението и проприоцепцията (чувството за позиция на тялото) се анализира чрез движения на ръката към цел в тъмнина. Резултатите помагат да се разбере как мозъкът комбинира сетивната информация и очакванията, за да определя къде се намира тялото ни.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Sensory integration for limb localization and action
The aim of this project was to gain further insight into the relations between vision and proprioception. Across the different experiments and papers we have found that that proprioception may not be very useful for identifying the position of the hand relative to a target; indeed, when people make multiple movements in the dark, their hands can drift far from the targets, without the participant’s knowledge. We showed that this drift can be explained by a participant’s prior belief that their motor commands are very good (a belief gleaned, we propose, from daily experience with accurate full-vision movements); movement error accumulates until error from proprioception offsets trust in the motor command. In a separate study we asked participants to report the perceived position of their unseen hand after a movement and observed that their reports were attracted toward the target, supporting the notion that expectation about motor outcome may override sensory input. These two studies addressed localizing the stationary hand (after movement). In two other studies we considered localization during the movement. In one study we examined how vision and proprioception may be used differently for online control, depending on the nature of the target. If the target was visual, visual information was more useful for online control. If the target was proprioceptive, people relied more on proprioception for online control. In another study we outlined a model to explain why people tend to overestimate the position of their unseen hand during movement (and also why they tend to undershoot the target of their reach). The findings from the project advance our understanding of how people use proprioception, a sensory modality that we do not understand as well as vision. This results can have impact on the future design of human-computer interfaces, specially in the way people will have to deal with differential delays between different sensory modalities.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
We rarely experience difficulty localizing our limbs. We can easily describe the location of our left hand or point to it with our right, and we can do this with our eyes open or closed. Moreover, we never have the sensation that our hand is in two locations simultaneously, even though we simultaneously process two distinct sources of information (vision and proprioception) about its current location. This project examines how vision and proprioception are combined to generate estimates of hand and target locations. The proposal tests the hypothesis that proprioception resists re-alignment by vision and that inter-sensory alignment is not needed for effective action. We apply an optimal cue combination approach to understanding the interaction between vision and proprioception, building from theoretical groundwork laid by Ernst and Banks (2002) and Smeets et al. (2006). The knowledge acquired from the proposed research should assist our understanding of sensory integration; it should also improve our understanding of how people adapt to virtual reality, mixed reality, and teleoperation systems, such that these systems can be optimally structured for comfortable use and accurate performance. The project’s success will rely on the combination of the applicant’s prior research experience in Canada (specifically in motor adaptation) and the host organisation’s resources and faculty expertise. The Vision and Control of Action (VISCA) group at the University of Barcelona provides the researcher with access to multiple virtual reality systems, and members of the faculty have expertise in sensorimotor integration, particularly as it relates to moving in virtual environments.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITAT DE BARCELONA · BarcelonaКоординаторИспания
Връзки
Данни: CORDIS, © Европейски съюз