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. Author manuscript; available in PMC: 2012 Apr 16.
Published in final edited form as: Invest Ophthalmol Vis Sci. 2006 Jan;47(1):195–201. doi: 10.1167/iovs.04-1279

Figure 4.

Figure 4

Unilateral upper eyelid restraint produced long-lasting changes in eyelid asymmetry. The relative eyelid amplitude of blinks evoked by stimulation of the right SO (RSO, top traces) and left SO (LSO, bottom traces) before (A) and immediately after 2 hours of left upper eyelid restraint (B) converted subject 1 from right to left asymmetric. Each pair of traces is the left (solid line) and right eyelid (dashed line) movement evoked on the same trial. The R/LLSO − L/RRSO values are for the illustrated trials. (C) The relative blink amplitude of five subjects (S1–5) before and immediately after 2 hours of unilateral eyelid restraint and the relative eyelid amplitude measured 18 months (S1), 8 days (S2), and 13 months (S3) after the eyelid restraint experiment are shown. For subjects 1, 2, 4, and 5, the left eyelid was restrained. Subject 3s right eyelid was restrained. Each bar is the mean of at least nine trials.