Fly photoreceptor sensitivity functions.

<p>Flies possess five classes of photoreceptor over the majority of the ommatidia in their compound eyes [<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004121#pntd.0004121.ref018" target="_blank">18</a>]. The typical spectral sensitivity functions of each photoreceptor class have been thoroughly characterised in <i>Musca</i> and <i>Calliphora</i>, and are shown here using data obtained from [<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004121#pntd.0004121.ref018" target="_blank">18</a>]. These functions were used by the author to calculate photoreceptor excitation by e-cloth reflectance spectra in a previous study [<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004121#pntd.0004121.ref010" target="_blank">10</a>]. This figure was produced by the author, and originally published in [<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004121#pntd.0004121.ref010" target="_blank">10</a>].