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. 2016 Jul 21;4:e2252. doi: 10.7717/peerj.2252

Figure 2. Changes in hearing threshold at each ABR measurement.

Figure 2

At every tested frequency, the result of the bilateral LLLT group showed faster hearing recovery than the unilateral LLLT group, asterisk represents the statistical difference between the two groups noted above itself (NE, Noise Exposure; BC, Bilateral and Control; BU, Bilateral and Unilateral; UC, Unilateral and Control).