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Technologies for Neuroimaging

Technologies for Neuroimaging. Department of Electrical and Computer Engineering . Undergraduate Team: Allen Chien, Abhilash G. Nair, Dauren Nurmaganbetov , Sahil P. Sanghani , Zachary A. Gardina , Zachary L. McDonald Professor: Thomas Talavage. ORIGINAL CONTROLLER DESIGN. GENERAL GOAL.

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Technologies for Neuroimaging

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  1. Technologies for Neuroimaging Department of Electrical and Computer Engineering Undergraduate Team: Allen Chien, Abhilash G. Nair, DaurenNurmaganbetov, Sahil P. Sanghani, Zachary A. Gardina, Zachary L. McDonald Professor: Thomas Talavage ORIGINAL CONTROLLER DESIGN GENERAL GOAL CURRENT WORK Due to the limitations which existed with the previous model, we are constructing a new prototype from scratch using new and better components. We are redesigning the pushbutton and joystick. Current topics of investigation are the constraints on fiber optic information transmission and reception. Functional Magnetic Resonance Imaging (fMRI) is a way of measuring localized brain activity. It requires the subject remain still while often interacting with an external stimulus. One effective way to stimulate higher cognitive function is using video games. However due to the high magnetic field present during testing, there cannot be any metallic objects close to the subject. A typical controller is not a viable way for a subject to play games during the fMRI. A completely nonmetallic controller is desired to help stimulate the brain for complex sensorimotor investigation. A plastic and fiber optic controller is being developed to meet these requirements. FUTURE WORK A custom PCB will be designed in the future to streamline processing and sensor interfaces. Later the controller will be programmed to interface with current video games for a more mentally activating fMRI experience. Figure #: Original Design by Jeff Jackson (2003) PREVIOUS WORK COMPONENTS PROTOTYPE DESIGNS • Sensors and Controller • Atmel 8-bit AVR RISC-based microcontroller • Arduino Uno • Fiber optic receivers (AFBR-2624Z ) • Fiber optic transmitters (AFBR-1624X) • 1mm fiber optic cable • Controller Case • External shell • Base mount • Approximately 10 years ago, a prototype was designed for general use. The prototype was based on a button based user input system which consisted of custom made optic sensors and microcontroller design. • The prototype had some major issues: • Extended usage led to misalignment and incorrect button presses • Components were not precise • Not responsive • Not easily reproducible • Obsolete components • Bulky

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