Patty is non-verbal and communicates through both eye-blinks and eye-gazes.
Below is a video demonstrating how Patty communications with an eye-gaze. In this video Patty is saying “YES.” When Patty says “YES,” she will look to the right (her left).
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For “NO,” Patty looks to the left and for “YES” she looks to the right, as pictured below:
