Joint action: fMRI and Kinematic Analyses

联合作用：功能磁共振成像和运动学分析

• 批准号: RGPIN-2015-04686
• 负责人: Brown, Steven
• 金额: $ 2.04万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=613109
• 关键词: Joint; action; fMRI; Kinematic; Analyses

The neuroscience of joint action is an exciting new area within cognitive neuroscience, one that unites the analysis of complex movement patterns, rhythmic synchronization, and multi-body coordination. However, what has been little studied in this field are situations where there is physical contact between the two individuals engaged in joint action. The proposed research program aims to investigate this using two complementary, state-of-the-art technologies: functional MRI and motion capture. A major focus of this work will be in analyzing the differences between being a “leader” and a “follower” of such joint movements, as well as the influence of both sensory and motor factors on coordination and synchronization. Neuroimaging methods will be used to examine the brains of individuals in an MRI scanner while they are interacting via hand contact with a person standing next to them. A key objective of the work will be to examine brain differences between being the leader (i.e., initiator) versus the follower (i.e., responder) of these joint movements. In addition, we will examine the neural effects of a host of sensory cues that influence the degree of coordination between the two individuals – such as an acoustic beat – as well as look at different types of movement patterns and motor constraints on coordination. Motion analysis will be carried out to examine the kinematic aspects of full-body joint movement, taking place in a performance laboratory furnished with 26 high-resolution motion capture cameras as well as the capacity to combine motion-capture data with electroencephalography and physiological recordings. The principal goal of the research will be to examine the effect of sensory cues on the coordination between two people moving together. Three categories of sensory cues will be examined: acoustic (a metronome beat), visual (perception of the partner’s movements), and proprioceptive (force-cues coming from body contact). The aim of the research will be to examine how people are able to synchronize their movements with one another both when sensory cues support this synchronization and when they conflict with it. For example, how do two people maintain coordinated movement when each person hears a different metronome beat through headphones? As with the neuroimaging work, we will look at the effect of leadership on these joint movements, and examine how leaders and followers differ in both their movement parameters and their responsiveness to sensory cues. Overall, this research program will provide a novel approach to understanding joint action, including examining the influences of leadership and a diversity of sensory cues on coordination during situations of physical contact. The parallel use of neuroimaging and kinematic studies will provide complementary information about the fundamental mechanisms underlying joint movement.

联合动作的神经科学是认知神经科学中一个令人兴奋的新领域，它结合了对复杂运动模式、节奏同步和多体协调的分析。然而，在这一领域很少研究的是参与联合行动的两个人之间有身体接触的情况。拟议的研究计划旨在使用两种互补的最先进的技术来研究这一点：功能性MRI和运动捕捉。这项工作的一个主要重点将是在分析之间的差异是一个“领导者”和“追随者”这样的关节运动，以及感官和运动因素的影响协调和同步。 神经成像方法将用于在MRI扫描仪中检查个人的大脑，同时他们通过与站在旁边的人的手接触进行互动。这项工作的一个关键目标将是研究领导者与领导者之间的大脑差异（即，发起者）与跟随者（即，这些联合运动的响应者。此外，我们将研究影响两个人之间协调程度的一系列感官线索的神经效应-例如声学节拍-以及观察不同类型的运动模式和运动对协调的限制。 将在一个性能实验室进行运动分析，以检查全身关节运动的运动学方面，该实验室配备了26台高分辨率运动捕捉摄像机，并具有将联合收割机运动捕捉数据与脑电图和生理记录相结合的能力。这项研究的主要目标是研究感官线索对两个人一起运动的协调性的影响。三个类别的感官线索将被检查：声学（节拍器节拍），视觉（感知合作伙伴的运动），本体感受（来自身体接触的力量线索）。这项研究的目的是研究当感觉线索支持同步和与同步相冲突时，人们如何能够彼此同步运动。例如，当两个人通过耳机听到不同的节拍器节拍时，两个人如何保持协调的运动？与神经影像学工作一样，我们将研究领导力对这些关节运动的影响，并研究领导者和追随者在运动参数和对感官线索的反应方面有何不同。 总的来说，这项研究计划将提供一种新的方法来理解联合行动，包括检查领导的影响和身体接触的情况下协调的感官线索的多样性。神经影像学和运动学研究的并行使用将为关节运动的基本机制提供补充信息。