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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: J Opt Soc Am A Opt Image Sci Vis. 2014 Apr 1;31(4):A208–A213. doi: 10.1364/JOSAA.31.00A208

Fig. 4.

Fig. 4

This figure shows the results from both the white-light adaptation studies. The four traces, bottom to top, increase the amount of white light adaptation that is present in the ERGs. The column on the left shows baboon ERG responses to 641 nm LED pulses, and the column on the right shows responses to 420 nm LED pulses. These wavelengths were chosen to best approximate white light placed through Wratten filter 29 and Wratten filter 98 in Fig. 4 of the Gouras and MacKay paper describing the technique. This study was not able to reproduce the results that used white light to preferentially elicit ERG responses from S-cones.