Sensory and Perceptual Contributions to the Preparation and Execution of Goal-Directed Action

例如，假设我伸手想打桌子上的一只苍蝇，但没打中。如果我再试一次，我可以使用什么类型的错误信号来更新和调整我的下一次尝试？我对错误信号的认识是否会影响我认为错误的来源--例如，我错过了是因为苍蝇移动了还是我在伸手中犯了一个错误？如果在我看不到的时候，苍蝇落在我的手背上，会发生什么？我有多容易不看就能分辨出苍蝇落在了哪只手上？我的手的位置会如何影响我找到苍蝇的速度？如果我再一次没有看一眼就决定试着用另一只手拍打苍蝇，我对我的手(上面有苍蝇)在太空中的位置的感觉有多准确？我用什么信息来计划我的伸手去打苍蝇，我可以多快做出决定？拟议的研究旨在解决这些类型的问题。我们大脑和感觉运动系统的适应能力--检测和纠正运动错误，改进我们的行动，并适应环境和/或神经肌肉系统不断变化的条件--对于作用于世界并与世界互动非常重要。这项研究计划的长期目标是更好地了解感觉和知觉-运动对目标定向动作的准备和控制的潜在机制。我试图了解在面对感觉/知觉环境和/或执行器机械的系统性扰动时，控制和适应目标定向运动的原则。

Consider, for instance, that I reach to swat a fly on my desk and miss it. If I try again, what type of error signal can I use to update and adjust my next attempt? Does my awareness of the error signal influence what I think is the source of the error - for example, did I miss because the fly moved or I made a error in my reach? What happens if, while I'm not looking, the fly lands on the back of my hand? How easily can I tell, without looking, which hand the fly has landed on? How will the location of my hand affect how quickly I can locate the fly? If I decide, again without looking, to try and swat the fly with my other hand, how accurate is my sense of where my hand (with the fly on it) is in space? What information do I use to plan my reach to swat the fly, and how quickly can I make my decision? The proposed research is designed to address these types of questions. The capacity of our brain and sensorimotor system to adapt - to detect and correct movement error, to refine our actions and adjust to changing conditions in the environment and/or neuromuscular system - is important to act upon and interact with the world. The long-term objective of this research program is to better understand the mechanisms underlying the sensory and perceptual-motor contributions to the preparation and control of goal-directed actions. I seek to understand the principles that govern the control and adaptation of goal-directed movements in the face of systematic perturbations to the sensory/perceptual environment and/or the effector machinery.