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BME 4900 Final Report - Biomedical Engineering - University of ...

BME 4900 Final Report - Biomedical Engineering - University of ...

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<strong>BME</strong> <strong>4900</strong> FINAL REPORT 19Team 8The input will be connected to the output <strong>of</strong> the tachometer. The current outputis related to the voltage at the input by the relationship in Equation 3.Equation 3. Determining the output current <strong>of</strong> the bilateral current source. Note that for thisequation, and .The current output will be injected into the dendrite <strong>of</strong> the post-synaptic neuronand will either stimulate or inhibit it. The inhibitory or stimulatory nature <strong>of</strong> the synapseis dictated by the addition <strong>of</strong> either <strong>of</strong> the following circuits mentioned in Land (2011).The circuits are shown in Fig. 16.Figure 16. The excitatory and inhibitory circuits are shown. The outlined resistors may be varied to increaseor decrease synaptic strength.2.2.3 Superior ColliculusThe superior colliculus receives information from other portions <strong>of</strong> the brainabout how far the eye should move. It outputs a signal whose length is proportional tothe magnitude <strong>of</strong> the desired movement and initiates the action <strong>of</strong> the rest <strong>of</strong> theneurons. This part <strong>of</strong> the device will be created in conjunction with the eye-movementrobot design team, who will be designing the image processing s<strong>of</strong>tware.

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