(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 3. Mean flicker fusion frequency (FFF) values for five sciaenid fishes. Open
symbols are results of day experiments, filled symbols are results of night
experiments. Error bars indicate ±1 s.e.m. Triangles are the FFF at
maximum stimulus intensity (Imax); circles are FFF at
I25 (light levels 25% of Imax). We
considered I25 to be a proxy for ambient environmental
light intensity.