An Integrated Graphical Environment for the Simulation and Analysis of Spinal Motor Circuits

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By Vann Hasty
for Senior Thesis under the supervision of Dr. K. R. Subramanian

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Sample Image(JPEG)
Sample QuickTime Animation (Warning! 6 Mbytes)

1 Introduction
2 The Application

2.1 Visualization Environment
2.2 Open Inventor Architecture
2.2.1 Scene Databases
2.2.2 Nodes
2.2.3 Scene Graphs
2.2.4 Node Kits
2.2.5 Manipulators
2.2.6 Component Library

2.3 Scene Graph
2.4 Application Interface

2.4.1 Programming Style
2.4.2 Callback Functions

2.5 Numerical Simulation
2.6 Interactive Simulation

2.6.1 Updating a Time Step
2.6.2 REST_STATE State
2.6.3 PLAY State
2.6.4 FF State
2.6.5 REWIND State
2.6.6 PAUSE State
2.6.7 STOP State
2.6.8 RESTART State
2.6.9 REV_STEP State
2.6.10 FF_STEP State
2.6.11 NO_FILE State

3 Results
4 Future Work
5 Color Plates

5.1 Application Views
5.2 Sequence



Table of Figures Cover -- An Image of the Main Application Window
Figure 1 -- Position of the Three Meshes in Space
Figure 2 -- Meshes in Action - Firing of the Spike Mesh
Figure 3 -- Open Inventor Architecture
Figure 4 -- Inventor Scene Graph Diagram
Figure 5 -- Mesh 1 Graph - Threshold Mesh
Figure 6 -- Mesh 2 Graph - Potential Mesh
Figure 7 -- Mesh 3 Graph - Spike Mesh
Figure 8 -- Label Graph
Figure 9 -- Fiber Spike Graph
Figure 10 -- Widget Attachments
Figure 11 -- Normal Motif Event Processing
Figure 12 -- Control Flow for a Work Procedure
Figure 13 -- VCR Interface
Figure 14 -- State Diagram for Interface State machine
Color Plate 1 -- Application Views
Color Plate 2 -- Sequence