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Synchronizing Microelectrode and Electronic Goniometer Data from Multiple Sources Using a Pseudo-random Binary Sign

Synchronizing Microelectrode and Electronic Goniometer Data from Multiple Sources Using a Pseudo-random Binary Signal. Tyler Moore BS, Rennie Jacobs MHS, LOTR., Alexander Yang BS, Erich Richter MD Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.

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Synchronizing Microelectrode and Electronic Goniometer Data from Multiple Sources Using a Pseudo-random Binary Sign

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  1. Synchronizing Microelectrode and Electronic Goniometer Data from Multiple Sources Using a Pseudo-random Binary Signal Tyler Moore BS, Rennie Jacobs MHS, LOTR., Alexander Yang BS, Erich Richter MD Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA

  2. Presentation Outline • Background and Objective • Pseudo-random Binary Signals • ClockSynch • Questions

  3. Background • The subthalamic nucleus (STN) is a common target in deep brain stimulation (DBS) procedures for movement disorders. • Ascertaining the somatotopic map of the STN requires: • Microelectrode recordings • Electrode position • Joint velocity

  4. Background Electronic goniometers • Continuously measure joint angle • Compatible goniometers are cost prohibitive • Affordable goniometers use a separate software clock

  5. Research Computer Data Acquisition Board Goniometer Hub

  6. Pseudo-random Binary Signals Patient Goniometers Electrodes Goniometer Software Electrode Software Pseudo-random Binary Signal

  7. Pseudo-random Binary Signals

  8. Pseudo-random Binary Signals

  9. Motor Control Alpha-Omega PC Electrode Motor Neural Analog Signal Splitters Electrodes Electrode Depth (TCP) LSU Neurosurgery PC DAQ Board USB Connection Patient ClockSynch Binary Signal PASCO Digital Adapter USB Connection PASCO Powerlink Biometric Analog Signal PASCO Goniometers

  10. ClockSynch • Custom software designed within the Department of Neurosurgery • Utilizes the DAQ Board to: • Collect analog data from electrodes • Output a pseudo-random binary pulse to PASCO software • Utilizes a TCP connection to collect digital electrode depth from the Alpha-Omega system

  11. ClockSynch

  12. Pseudo-random Binary Signals

  13. Pseudo-random Binary Signals

  14. Conclusions • Pseudo-random Binary Signals have been used to sychronize data from 8 DBS procedures • The dilemma of independent software clocks can arise in situations involving disparate sets of instrumentation • This method is generalizable for synchronizing any number of independent research clocks

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