Retinal Prosthesis Dissertation - Student Home Pages

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223. Mingcui, Z., et al. A Transcutaneous Data Telemetry System Tolerant to Power Telemetry Interference. in Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE. 2006. 224. Guoxing, W., et al. A Dual Band Wireless Power and Data Telemetry for Retinal Prosthesis. in Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE. 2006. 225. Singh, V., et al. SAR in the human body by a wireless telemetry system for a retinal prosthesis. in Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE VO -. 2007. 226. Lazzi G. DeMarco S.C. Liu W. Weiland J.D. Humayun M.S., Computed SAR and thermal elevation in a 0.25-mm 2-D model of the human eye and head in response to an implanted retinal stimulator - part II: results. Antennas and Propagation, IEEE Transactions on, 2003. 51(9): p. 2286-2295. 227. Singh, V., et al., On the Thermal Elevation of a 60-Electrode Epiretinal Prosthesis for the Blind. Biomedical Circuits and Systems, IEEE Transactions on, 2008. 2(4): p. 289-300. 228. Opie, N.L., et al. Thermal heating of a retinal prosthesis: Thermal model and in-vitro study. in Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE. 2010. 229. Jeng-Shyong, S., et al., Electrical Stimulation in Isolated Rabbit Retina. Neural Systems and Rehabilitation Engineering, IEEE Transactions on, 2006. 14(3): p. 290-298. 230. Kendir, G.A., et al., An optimal design methodology for inductive power link with class-E amplifier. Circuits and Systems I: Regular Papers, IEEE Transactions on, 2005. 52(5): p. 857-866. 231. Zaghloul, K.A. and K. Boahen, Optic nerve signals in a neuromorphic chip II: testing and results. Biomedical Engineering, IEEE Transactions on, 2004. 51(4): p. 667-675. 232. Bratkova, M., S. Boulos, and P. Shirley, oRGB: A Practical Opponent Color Space for Computer Graphics. Computer Graphics and Applications, IEEE, 2009. 29(1): p. 42-55. %Appendix A MATLAB %ycut.m is this main file %this program to run frames and transmit events, and then show received %events, uses the function file "pwork.m" at the heart of this operation % %required files: mixedsource.m (test frames) and the following function files %pwork.m, scan.m, subi.m and, to show the neuromorphics - ysend.m. % %tidy; set (0,'DefaultFigureWindowStyle','docked') clear, close all, imtool close all clc %mixedsource; 133 of 200
xmixedsource; numberOfFrames = 8; for t = 1: numberOfFrames %Load image priortime = t-1; gfr = imread (sprintf ('mixed%d.bmp', priortime)); %gfr = imresize (gfr, 16); currentTime = t; fhr = imread (sprintf ('mixed%d.bmp', currentTime)); %fhr = imresize (fhr, 16); changes = pwork (gfr, fhr); if t ~= numberOfFrames delayUser = input ('Next frame? (enter): '); end end set (0,'DefaultFigureWindowStyle','normal') %Showing neuromorphics (ysend.m) function [x] = send(x); tic rgb = double(x)/255; [nx, ny, nz]=size (rgb); r=reshape (rgb, nx*ny*nz, 1); %Lets calculate the row value of this reshaped vector rvalue = nx*ny*nz; samplenum = 50; fprintf ('You have chosen %4.f samples\n', samplenum); % modulate the pixels as spike trains of 500 samples spike= (diff (mod (kron(r/10, 0: samplenum)', 1))
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An Address Event Representation (AE
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Abstract\Foreword This document pro
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Contents An Address Event Represent
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--Appendix E FPGA Outputs .........
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Figure 48 receiver rtl_16 .........
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Chapter 1 Introduction/research aim
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foveola (fovea pit) there is a one
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NB that the photoreceptors of the f
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electrodes to be driven implies sti
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Typically AER is used as a multi se
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Real time - innerpulse relationship
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the post processing stage of this w
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Appendix C: FPGA Sender chip Append
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Red (660nm) R / G Red ( 620750nm )
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1 0 1 1 0 0 1 1 0 1 1 1 Table 3 `xo
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Adaptive linear combiner w 0 1 Let
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is correct (one class) and -1 (the
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x2 Linear separation 1.00 0.90 0.80
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This is also the Cartesian co-ordin
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2.4 Comparison to Frame Based Repre
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Typical GOP structure (Typically an
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point is an event occurs for spike
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2.5.1 Files in Appendix A “ycut.m
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MPEG-2 setup AER setup Camera Camer
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2.6.2 FPGA representation of epi_re
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Chapter 3 Concepts An epiretinal im
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AER Transmission lines INPUT image
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electrical pulse generated is calle
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Figure 25 Retinal colour processing
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cells to modulate this luminance pa
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L+ M- + - R-G G-R B-Y Y-B Note: L(r
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3.6.2 Retinal operations Light reac
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quantified by number of cycles pres
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(Where * is the convolution operato
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T frame C * R * M p Tpacket i.e. Tp
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e relaxed and from (2) the temporal
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one tw o three four five six seven
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3.8.1 Other test images For other b
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Tspike (4ms) Ispike (16ms: interspi
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INDIGO ORANGE YELLOW MAGENTA CYAN B
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4.1 Sender concepts From chapter on
Page 83 and 84: pixel must equate to 0.02/1024 i.e.
Page 85 and 86: Clocking hierarchy (32 by 32 image)
Page 87 and 88: the number of address bits will alt
Page 89 and 90: Translation report, (3) Map report,
Page 91 and 92: 90 of 200 CLKIN_IN RST_IN pixelcloc
Page 93 and 94: incorporate colour planes for each
Page 95 and 96: Chapter 5 Receiver chip The followi
Page 97 and 98: 5.2 Power Analysis Xilinx FPGAs hav
Page 99 and 100: 98 of 200 produce_wire _outputs Ins
Page 101 and 102: 5.5.1 Incoming (short) AER stream T
Page 103 and 104: Receiver Red plane r1 DAC (4-bit) T
Page 105 and 106: 5.8.2 Electrode size and positionin
Page 107 and 108: sequence of wiring from the receive
Page 109 and 110: does this is to inject an equivalen
Page 111 and 112: 6.2.2 Envisaged retinal array This
Page 113 and 114: a monochrome camera in this space i
Page 115 and 116: 632mW) thus extending battery life
Page 117 and 118: For the implemented/structural case
Page 119 and 120: The sender and receiver circuitry p
Page 121 and 122: Bibliography 1. Woodburn R. Murray
Page 123 and 124: 38. Banks, D.J., P. Degenaar, and C
Page 125 and 126: 74. Freeman, J.A., Skapura, D. M.,
Page 127 and 128: 109. Weiland, J.D., et al. Progress
Page 129 and 130: 141. Indiveri G. Chicca E. Douglas
Page 131 and 132: 172. Singh, P.R., et al. A matched
Page 133: 206. Stieglitz, T., et al. Developm
Page 137 and 138: %check {k} =imread (['D:\abc\subima
Page 139 and 140: %Two for loops the first (outer loo
Page 141 and 142: %Row break rr6c1=000; rr6c2=000; rr
Page 143 and 144: --Appendix B FPGA Test setup librar
Page 145 and 146: stream_blue_pulse_count: out std_lo
Page 147 and 148: DVI_XCLK_P clock_25MHz, spike_cloc
Page 149 and 150: use IEEE.STD_LOGIC_UNSIGNED.ALL; --
Page 151 and 152: --Appendix C FPGA Sender chip libra
Page 153 and 154: -- else -- resit '1', CLKDV_OUT =>
Page 155 and 156: FPGA Receiver (structural) chip --A
Page 157 and 158: FPGA Receiver (structural) chip --E
Page 159 and 160: FPGA Receiver (structural) chip --r
Page 161 and 162: FPGA Receiver (structural) chip blu
Page 163 and 164: FPGA Receiver (structural) chip con
Page 165 and 166: FPGA Receiver (structural) chip --s
Page 167 and 168: FPGA Receiver (structural) chip --
Page 169 and 170: FPGA Receiver (structural) chip --
Page 171 and 172: FPGA Receiver (structural) chip IO_
Page 173 and 174: Number with an unused LUT 18 219 8%
Page 175 and 176: IO Utilization: Number of IOs: 26 N
Page 177 and 178: The Slice Logic Distribution report
Page 179 and 180: Router effort level (-rl): Standard
Page 181 and 182: oming_clock | HOLD | 0.519ns| | 0|
Page 183 and 184: Part | xc5vlx50tff1136-3 | Process
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Selected Device: 5vlx50tff1136-3 Sl
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used in combination with MAP -timin
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Data Sheet report: ----------------
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“For these implantable devices to
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microstimulator with a 1:4 demultip
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“Medical experiments have estimat
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A Retinomorphic Vision System “In
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“The common language of neuromorp
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