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Evaluation of Ceramic-based Microelectrode Arrays for  In Vivo  Recordings PM Talauliker  F Pomerleau  E Rutherford P Huettl  JT Hastings  GA Gerhardt  AAAS (adapted)
Ceramic MEAs: From bench to bedside Flexible microelectrodes for human and nonhuman primate recordings  (with Ad-Tech Medical Instrument Corp.) Mouse Rat NHP Cell culture Tissue  slices Anesthetized  Rat/mouse Acute experiments Awake behaving studies Microelectrode tip Subdural strip electrodes and Spencer-Gerhardt microelectrodes 20 x 150  µ m   100   m W2 20x150  μ m   600   m W1 15x333, 50x50   m 900   m S2 15x333   m 100   m
[object Object],[object Object],[object Object],[object Object],[object Object],GOAL: Long-term  In Vivo  Function 1.79 0.1 Limit of Detection (µM) 6.7 20.3 Sensitivity  (pA / µM) After Implantation Before Implantation Recording Parameter 2 weeks  post- removal
EM Imaging: Ceramic Surface Polished front & back Sides Polyimide over Al 2 O 3 Pt
EM Imaging: Post-removal 4 weeks 4 months Cellular / Proteinacous Matrix
Surface Analysis: AFM Unimplanted Recording Site At 4 weeks Surface Topography at 4 Weeks Surface Analysis: GFAP Immunolabel Optical Microscopy  GFAP fluorescence  scanning EM   (astrocytes) 4 months post-implant
Future Studies ,[object Object],[object Object],[object Object]
Contributors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Funding   Support NIDA DA017186, NSF DBI-0352848, NSF EECO 3707723, DARPA N66001-02-C-8058, NINDS 1P50 NS39787 Gerhardt Lab
[object Object]

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IBE Conference

  • 1. Evaluation of Ceramic-based Microelectrode Arrays for In Vivo Recordings PM Talauliker F Pomerleau E Rutherford P Huettl JT Hastings GA Gerhardt AAAS (adapted)
  • 2. Ceramic MEAs: From bench to bedside Flexible microelectrodes for human and nonhuman primate recordings (with Ad-Tech Medical Instrument Corp.) Mouse Rat NHP Cell culture Tissue slices Anesthetized Rat/mouse Acute experiments Awake behaving studies Microelectrode tip Subdural strip electrodes and Spencer-Gerhardt microelectrodes 20 x 150 µ m 100  m W2 20x150 μ m 600  m W1 15x333, 50x50  m 900  m S2 15x333  m 100  m
  • 3.
  • 4. EM Imaging: Ceramic Surface Polished front & back Sides Polyimide over Al 2 O 3 Pt
  • 5. EM Imaging: Post-removal 4 weeks 4 months Cellular / Proteinacous Matrix
  • 6. Surface Analysis: AFM Unimplanted Recording Site At 4 weeks Surface Topography at 4 Weeks Surface Analysis: GFAP Immunolabel Optical Microscopy GFAP fluorescence scanning EM (astrocytes) 4 months post-implant
  • 7.
  • 8.
  • 9.