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Characterization And Redesign Of The Afit Multielectrode Array, Richard G. Darenberg Jr.
Characterization And Redesign Of The Afit Multielectrode Array, Richard G. Darenberg Jr.
Theses and Dissertations
Since 1978, faculty and graduate students from the Air Force Institute of Technology (AFIT) have been working on an implantable circuit array that can record visual signals from the brain or stimulate the brain. In the current design the circuit is a 16 x 16 array of pads, each pad being 160 x 160 micrometers with 250 micrometers spacing with an 'L' shaped reference pad used as a ground reference. The array is multiplexed so that only one I-O line is required to access all 256 pads. This research was twofold: first to analyze the existing circuit and identify sources …
Experimental Definition For Implantation Of The Afit Cortical Multielectrode Array, Adam G. Spenik
Experimental Definition For Implantation Of The Afit Cortical Multielectrode Array, Adam G. Spenik
Theses and Dissertations
A two-dimensional multiplexed array of 256 electrodes (16 x 16) has been fabricated using conventional CMOS fabrication techniques. The size and spacing of the electrodes (160 x 160 µm squares with center-to-center spacing of 250 µm) approximate that of the cortical columns. The device is mounted on a small biocompatible package and a protocol to implant this package on the visual cortex of a ferret and a Rhesus monkey was developed and approved. An instrumentation setup to record the data from the device is described as well as the methods used to demultiplex the data. Testing of the device in …