fMRI-Compatible Hand Controller for Subject Interaction

用于受试者交互的兼容 fMRI 的手持控制器

• 批准号: 6466374
• 负责人: THOMAS M TALAVAGE
• 金额: $ 11.25万
• 依托单位: PURDUE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-15 至 2003-10-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6466374
• 关键词: bioimaging /biomedical imaging; biomedical equipment development; computer human interaction; fiber optics; functional magnetic resonance imaging; human subject; magnetic field; portable biomedical equipment; stimulus /response

Description (provided by applicant): As the usage of functional magnetic resonance imaging (fMRI) for the purpose of tracking neurological activity increases, the spectrum of experimental and research applications of this technology is destined to diversify. For fMRI to achieve its potential, it is essential for the interaction between the subject and the stimuli to become more sophisticated. A user-interface device that enhances the spectrum of responses a subject may make and that may be recorded and analyzed will (1) simplify the procedure of measuring and interpreting response times, (2) permit complex responses to be studied, and (3) make IMRI more useful from a clinical standpoint. It is the intent of this research project to develop a set of user-interface equipment to increase the breadth of fMRI research. Current devices used for complex subject interaction with a presented stimulus or virtual environment in fMRI experiments suffer from two short-comings that may affect both subject safety and the quality of the acquired data. The first short-coming of these devices (including commercially available "MRI-compatible" devices) is that they typically contain significant quantities of electrical components that require shielding for proper operation in the high magnetic field environment. The second short-coming, primarily affecting image quality, is that typical user-input devices require non-trivial physical movements on the part of the subject to achieve a particular task. This research project will develop a compact hand-controller device for use in fMRI experiments that (1) has essentially no interaction with the magnetic fields required for imaging, and (2) permits a significant number of inputs through which the subject, using limited physical movement, may interact with a stimulus. The construction of the physical device will require novel engineering solutions to provide robust operation of both binary and analog inputs. It is anticipated that it will be possible to construct a refined version of the hand-controller and associated software such that this device may be made readily accessible to the fMRI research community. The availability of a hand-controller that limits possible interference with the imaging process, is easy to use, and provides a significant variety of subject responses (particularly when hand-controllers are utilized in both hands) will increase the ease and accuracy of future experiments requiring subject feedback and interaction.

描述（申请人提供）：作为功能性磁性材料的用途 核磁共振成像（fMRI），用于跟踪神经活动 增加，光谱的实验和研究应用，这 技术注定要多样化。为了使功能磁共振成像发挥其潜力， 对于主体和刺激之间的相互作用至关重要， 更复杂一种用户界面设备， 受试者可能做出的反应以及可能被记录和分析的反应将（1） 简化测量和解释响应时间的程序，（2）允许 复杂的反应进行研究，（3）使IMRI更有用的临床 立场观点本研究项目的目的是开发一套 用户界面设备，以增加功能磁共振成像研究的广度。 用于与呈现的刺激进行复杂受试者交互的当前设备 或虚拟环境中的功能磁共振成像实验遭受了两个短期的， 可能影响受试者安全和采集数据的质量。第一 这些设备的缺点（包括商业上可用的 “MRI兼容”设备）的缺点是它们通常含有大量 需要屏蔽的电气部件，以便在 高磁场环境下。第二个缺点，主要影响 图像质量是典型用户输入设备需要非平凡的物理 在主体的一部分上的运动，以实现特定的任务。 本研究计划将开发一种紧凑的手控装置，用于 fMRI实验表明：（1）基本上与磁场没有相互作用， 成像所需的场，以及（2）允许大量的输入 通过该接口，使用有限的身体运动，受试者可以与 刺激。物理设备的构造将需要新颖的 工程解决方案，提供二进制和模拟的稳健操作 输入。 预计将有可能构建一个改进的版本， 手控制器和相关软件，使得该装置可以 fMRI研究社区很容易获得。的可用性 手动控制器，限制可能干扰成像过程， 易于使用，并提供多种主题响应 （特别是当双手使用手动控制器时）将增加 未来需要受试者反馈的实验的简便性和准确性， 互动