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Eye Movement Measurement In MRI

SKU: 010144

Rating: 

5

A fiber optic, photodiode design for detecting horizontal eye movement in the rhesus macaque monkey while in the fMRI was developed and tested. Light from an infrared laser source with an output of 40 mW was directed via fiber optic cable to reflect off of the eye. A photodiode received the reflected light by way of a fiber optic cable and generated a voltage based on the intensity of light received. Testing was conducted using a marble and was continued using sheep eyes. Maximum reflection achieved was 35%. Power output based on a single source cable and single detector cable was not linear with angular eye displacement. Future work includes testing on rhesus eyes and cats, ordering components to construct a functional prototype and integrating this prototype to be used with the client’s software system.

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