Eye and head tracking during tactile stimulation

工作性质：我的多感官整合实验室探索了多感官的相互作用，这些相互作用是我们对时间和空间的感知的基础，以及我们在这些框架内的位置和运动。虽然我的实验室有提供和控制视觉、听觉、前庭和触觉刺激的复杂方法，但这些刺激的空间位置需要与观察者的身体（广义上包括眼睛和头部，以及躯干和四肢）相关。虽然我们可以在一定程度上控制眼睛和头部的位置，只要让受试者看着目标或将头戴式激光器指向特定方向，这只能让我们粗略估计他们在看什么，并依赖于参与者的顺从和合理准确。我实验室的新研究表明，身体的表征涉及到很强的视觉成分。因此，相对于身体的刺激的感知受到观察者对他们的眼睛和头部的位置的知识的错误的影响。为了得出精确的结论，并进行更复杂的实验，其中眼睛和头部的位置是在三维操纵，这是必不可少的，眼睛和头部的位置获得精确的测量。这需要一个眼睛和头部跟踪系统。

Nature of the work: My multisensory integration laboratory explores the multisensory interactions that underlie our perception of time and space, and our location and motion within those frameworks. Although my laboratory has sophisticated methods of providing and controlling visual, auditory, vestibular and tactile stimuli, the spatial locations of these stimuli need to be related to an observer's body (broadly defined to include the eyes and head, as well as the trunk and limbs). Although we can to some extent control the positions of the eyes and head by simply asking subjects to look at a target or point a head-mounted laser in a particular direction, this only allows us to roughly estimate where they are looking and relies on participants being compliant and reasonably accurate. Emerging studies from my laboratory suggest that the representation of the body involves a strong visual component. As a consequence of this, the perception of stimuli relative to the body is affected by errors in an observer's knowledge of the positions of their eyes and head. In order to make precise conclusions and to carry out more sophisticated experiments in which eye and head position are manipulated in three dimensions, it is essential that precise measurements of eye and head position are obtained. This requires an eye and head tracking system.